Gap junctions in animal cells function similarly to plasmodesmata in plant cells in that they are channels between nearby cells that facilitate the passage of ions, water, and other substances. However, gap junctions and plasmodesmata are structurally distinct.
Cell junctions are required for communication with the cell's outside area. Cell junctions are classified into numerous types, including tight junctions, gap junctions, and desmosomes.
A tight junction is the junction that prevents fluid leakage between epithelial cells. Claudins and occludins are two proteins discovered that aid in the tightening of the cell-cell border.
These connections are present in epithelial cells in the skin and cavities. This sort of junction also governs water transport in epithelial cells. It serves as a physical barrier and aids in the regulation of cell polarity.
Learn more about to cell-cell junctional structure visit here:
https://brainly.com/question/29482938
#SPJ4
during starvation, group of answer choices structural proteins cannot be used as a potential energy source. carbohydrate utilization increases. circulating ketone bodies decrease. gluconeogenesis increases. all of these answers are correct.
During prolonged starvation, the principal source of glucose is gluconeogenesis from amino acids arising from muscle proteolysis.
What happens during starvation?Animals, including humans, activate a complex set of hormonal and metabolic adaptations that allow them to survive protracted periods of famine. The brain can only use glucose or ketone bodies as respiratory fuel. Gluconeogenesis from amino acids derived from muscle proteolysis is principal source of glucose during the extended fasting. To spare glucose utilization (and thus spare muscle protein) most tissues of the body utilize fat-derived fuels (fatty acid and ketone bodies) . As famine advances ketone bodies also become the predominant fuel of the brain, again reducing the demand for glucose. High quantities of ketone bodies result in substantial ketonuria with ketones excreted as ammonium salts. The ammonia is produced by the kidney's breakdown of glutamine, with the carbon skeleton returned as glucose. During extended famine, this well-organized metabolic rhythm ensures a continuous fuel supply to the brain and other tissues.
To learn more about glucose visit:
https://brainly.com/question/2396657
#SPJ4
The final page (the biggest one) will contain the entire photosynthesis diagram.
Below this diagram, explain how human activities might impact this process.
How might global warming impact photosynthesis?
How might water pollution impact photosynthesis?
How might smog and air pollution impact photosynthesis?
Answer: 1) Increasing carbon dioxide levels may increase photosynthesis rates in some plants.
2) Plastic debris that builds up at or near the water's surface impedes sunlight from fully reaching plants below Plants rely on energy from sunlight to drive the photosynthesis process and create glucose food molecules.
3) A significant effect haze has on plants is that it blocks light, which reduces a plant's rate of photosynthesis. Lower photosynthetic ability, in turn, reduces plants' ability to grow.
There is the Answer.
why does population growth in the united states have a larger effect on the global environment than population growth in india?
Answer:
It has a larger effect because there is lots of carbon dioxide (CO2) released into the air because of the vehicles and the amount of energy used. Thanks:) From a Science Teacher
Question 3 of 10
A mother has two alleles for normal vision. How many of her gametes will
carry the allele for color blindness?
OA. 50%
OB. 25%
O C. 75%
OD. 0%
Answer:
D. 0%
Explanation:
There should be no way for them to get color blindness since she has both alleles for normal vision. Now lets say she had one for normal and one for color blindness then there would be a 50% chance of her gametes to carry color blindness.
I hope this helps!!! :)
n humans, assume straight hairline is recessive to widow's peak. a woman with a straight hairline is married to a man with a widow's peak whose mother had a straight hairline. what are the chances of the couple having a child with a straight hairline?
There is 50% chances of the couple having a child with a straight hairline. If A woman with a straight hairline is married to a man with a widow's peak whose mother had a straight hairline.
A monohybrid cross is a cross between two homozygous individuals, which produces the opposite phenotype for a particular genetic characteristic. A monohybrid cross is made up of two monohybrid characteristics ( straight hairline and widow's peak). The monohybrid cross is in charge of passing one gene on. Geneticists utilise monohybrid crosses to study the expression of heterozygous genes passed down from parents to homozygous offspring.
= Ww ( straight line) x ww (widow's peak)
= Ww ( straight line) : Ww ( straight line) : ww (widow's peak) : ww (widow's peak)
Hence, equal chances exist for straight line and widow's peak.
To know more about Laws Of Mendel.
https://brainly.com/question/23067535
#SPJ4
put the following steps in order for performing a smear preparation from a liquid culture. instructions choice 1 of 4. apply loopful of bacterial culture to slide toggle button apply loopful of bacterial culture to slide choice 2 of 4. label the microscope slide toggle button label the microscope slide choice 3 of 4. heat fix toggle button heat fix choice 4 of 4. air dry toggle button air dry
Give the microscopic slide a name. Onto the slide, drop a loopful of bacterial culture. Hot fix and air dry. For various laboratory processes, including the Gram-stain, a smear must be prepared.
Making a smear is done to adhere the bacteria to the slide and stop the sample from slipping away during the staining process. A solid or broth medium can be used to prepare a smear. The steps for preparing a smear for a Gram-stain are listed below.
1. Center a clean slide with one needle of solid bacterial growth or two loops of liquid bacterial growth.
2. If you're working with a solid media, use a water bottle to add just one drop of water to your specimen. Don't include the water if you're using a broth medium.
3. Using your inoculating loop, now thoroughly combine the specimen with the water, and then spread the mixture out to cover around half of the slide's surface area.
4. After putting the slide on a slide warmer, let it dry. Now that the smear is prepared, staining may begin.
Learn more about smear
https://brainly.com/question/28582898
#SPJ4
As blood glucose levels increase, hormones are released to return glucose levels to normal. This is an example of.
Blood glucose (blood sugar) should be kept in a very specific range by the human body. These two hormones, insulin and glucagon, are responsible for this. Both glucagon and insulin are considered pancreatic endocrine hormones since they are both released by the pancreas.
What hormone triggers a return to normal blood sugar levels?Together with the hormone insulin, glucagon regulates blood sugar levels and helps to maintain target ranges. Insulin is released to prevent blood sugar levels from increasing too high while glucagon is released to prevent blood sugar levels from falling too low (hypoglycemia).
What happens to blood sugar and hormone levels after eating?The blood glucose levels fall four to six hours after a meal. This stimulates the pancreatic. glucagon production. This hormone instructs the muscles in your body to release the stored glycogen and turn it back into glucose.
To know more about blood glucose visit :-
https://brainly.com/question/8394646
#SPJ4
A comparison was made across eight species for their differences in amino acid sequences for cytochrome c, a protein in the electron transport chain in the mitochondria. Which arguments can be supported by the data? select all that may apply.
The amino acid sequence of a protein is determined by its DNA sequence, therefore two organisms that share a gene ought to have similar or even identical amino acid sequences. That's because recently in evolutionary history, closely similar species most likely diverged from one another.
By counting the number of differences between two species' DNA or amino acid sequences, molecular clocks can be used to assess how closely two species are related. Sometimes referred to as gene clocks or evolutionary clocksThe methods used by biologists to ascertain the arrangement of amino acids in proteins have been refined. Evolutionary relationships that might otherwise go undiscovered might be discovered by comparing the amino acid sequences in homologous proteins of comparable and varied animals.A protein may differ depending on the changes in the amino acid chains (in shape and function). It may change the trait they are coded for. For instance, if the amino acid sequence is altered, the protein might not function properly. It might result in constructive, negative, or neutral changes.
Learn more about amino acid by using this link:
https://brainly.com/question/791528
#SPJ4
mucus occurs in both the respiratory and digestive tracts. which answer best describes the main immunological function of mucus?
The primary immunological role of mucus in both the respiratory and digestive systems is to enhance oxygen absorption, sweep away waste, and, because it is acidic, destroy bacteria.
A watery fluid that is slick and covers mucous membranes is called mucus. It normally comes from mucous gland cells, though it can also come from mixed glands, which have both serous and mucus cells. It is a thick colloid made up of inorganic salts. an oxygen absorption. The contents of a beef packet's oxygen absorber In enclosed packaging, oxygen is removed or reduced through the addition of oxygen scavengers or oxygen absorbers. They serve as a means of preserving product safety and extending shelf life.
Learn more about mucus here
https://brainly.com/question/28577975
#SPJ4
the ventromedial tracts are important for ; and the dorsolateral tracts are important for .
The ventromedial tracts are important for controlling the movement of the body's trunk ;and the dorsolateral tracts are important for carrying out important cognitive processes as memory, attention.
The ventromedial prefrontal cortex (vmPFC) is a piece of the prefrontal cortex in the mammalian mind. The ventral average prefrontal is situated in the cerebrum at the lower part of the cerebral halves of the globe and is ensnared in the handling of hazard and dread, as it is basic in the guideline of amygdala movement in people. It likewise assumes a part in the hindrance of close to home reactions, and during the time spent direction and poise.
The dorsolateral prefrontal cortex (DLPFC or DL-PFC) is a region in the prefrontal cortex of the primate mind. It is one of the most as of late inferred pieces of the human cerebrum. It goes through a delayed time of development which goes on until adulthood. The DLPFC is certainly not a physical design, but instead a useful one.
To know more about ventromedial, visit here:
https://brainly.com/question/7001266
#SPJ4
will give you brainliest
Examine the pedigree showing the inheritance of the sickle cell trait in a family.
Which option correctly describes the mode of inheritance for sickle cell anemia?
Responses
recessive
X-linked recessive
dominant
X-linked dominant
Answer:
The mode of inheritance for sickle cell anemia is A. recessive.
Explanation:
Sickle cell anemia is a genetic disorder that affects the structure of red blood cells. It is caused by a mutation in the gene that codes for the protein called hemoglobin. Hemoglobin is responsible for carrying oxygen in the red blood cells.
In the pedigree showing the inheritance of the sickle cell trait, we can see that affected individuals have the disorder only when both parents are carriers. This means that the trait is not expressed if only one parent is a carrier.
Recessive inheritance means that an individual needs to inherit two copies of the mutated gene (one from each parent) to develop the disorder. In the case of sickle cell anemia, an individual who inherits one copy of the mutated gene from one parent and a normal gene from the other parent will be a carrier of the sickle cell trait, but will not have the disorder. However, if an individual inherits two copies of the mutated gene, one from each parent, they will have sickle cell anemia.
Therefore, the correct option describing the mode of inheritance for sickle cell anemia is recessive.
To learn more about sickle cell anemia visit: https://brainly.com/question/30658034
Which of these observations is NOT expected based on our current theory of solar systems evolving from a solar nebula?
A) The planets orbit in the same plane around the sun
B) The sun spins in the same direction as the orbits of the planets
C) Some planets have similar compositions to the sun
D) The discovery of giant gas planets very near their host star
The observations which is not expected based on our current theory of solar systems evolving from a solar nebula is that the discovery of giant gas planets very near their host star and is therefore denoted as option D.
What is Solar system?This is referred to as the gravitationally bound system of the Sun and the objects that orbit it and consists of various types of elements such as planets. sun etc.
The theory of solar systems evolving from a solar nebula is that it contains elements such as gas and dusts and the planets obit in the same plane around the sun which makes them coplanar.
The sun spins in the same direction as the orbits of the planets and some of the planets have similar compositions to the sun which is therefore the reason why option D was chosen as the correct choice.
Read more about Solar system here https://brainly.com/question/1286910
#SPJ1
what is the purpose of a sensory homunculus? a. it maps out the somatosensory cortex in relationship to the corresponding motor outputs. b. it shows how areas of the body are represented in the primary somatosensory cortex on the basis of sensitivity. c. it delineates which areas of the somatosensory cortex require the greatest oxygen and glucose supply. d. it demonstrates how our sensory inputs are connected to the central nervous system.
Option (b) It shows how regions of the body are represented in the primary somatosensory cortex based on sensitivity.
A sensory homunculus is a topographic representation of the body's sensory distribution found in the cerebral cortex. It is a map along the cerebral cortex where every part of the body is processed. Sensations occur throughout the body. Impulses from the body are sent to the spinal cord and eventually processed back to the brain. The trigeminal nerve carries sensations of the face. The sensory homunculus describes how much representation each part of the body has in the sensory cortex, emphasizing the human hand and face. We gather most of our senses to form perceptions. And, sensory pathways from the skin that convey information about pain, temperature, and touch are mapped onto the somatosensory cortex. This mapping of our touch onto the cortex provides a representation of the body, named the homunculus by its discoverer, Wilder Penfield.
To learn about homunculus click here https://brainly.com/question/28157895
#SPJ4
Breast milk:Group of answer choicesa. is deficient in iron and vitamin C.b. is more likely than formula to poduce alleries.c. provides more iron and vitaminC and A than cow's milk.d. upsets the baby's digestive system more often than formulas.
Breast milk C. provides more iron and vitamin C and A than cow's milk.
The mammary glands produce breast milk, also known as milk. This can be found in a female's breast. One of the most important sources of nutrition for newborns is breast milk. This is made up of fat, protein, and vitamins. Compared to cow's milk, breast milk contains more iron, vitamin C, and vitamin A. iron is absorbed in breast milk in comparison to other sources. Iron absorption is aided by the presence of vitamin C and lactose in breast milk.
Therefore, the correct answer is C.
Know more about Mammary glands here: https://brainly.com/question/14216592
#SPJ4
how do phagocytes eliminate pathogens? what group of pathogens are most easily phagocytosed and why? g
Phagocytes ingest and destroy the pathogen through a process called phagocytosis.
Pathogens are recognized by phagocytes, which then phagocytose and eliminate them. Recognition is often accomplished through the use of phagocyte receptors that bind to molecules commonly present on pathogens, called pathogen-associated molecular patterns (PAMPs). Chemicals from the pathogen or dead damaged abnormal cells act as attractants causing phagocytes to move towards the pathogen. Phagocytes have several receptors in their cell surface membrane that recognize and attach to chemicals on the surface of the pathogen. They create a vesicle known as a phagosome by engulfing the pathogen. Particles commonly engulfed by white blood cells include bacteria, dead tissue cells, protozoa, various dust particles, pigments, and other tiny foreign bodies. Encapsulated bacteria are more difficult to ingest. In the absence of specific antibodies recognizing the bacteria, opsonization cannot occur and the bacteria repel the phagocytes.
To learn more about phagocytes click here https://brainly.com/question/16185213
#SPJ4
81) the initial response of the root cells of a tomato plant watered with seawater would be to a) rapidly produce organic solutes in the cytoplasm. b) rapidly expand until the cells burst. c) begin to plasmolyze as water is lost. d) actively transport water from the cytoplasm into the vacuole. e) actively absorb salts from the seawater.
Option C, begin to plasmolyze as water is lost when a tomato plant is irrigated with seawater, the root cells' immediate cytoplasm reaction is to start plasmolyzing as water is lost.
When exposed to a solution that has more solutes than the cells do, plant cells engage in a process known as plasmolysis. This is an illustration of a hypertonic solution. Osmosis is the process through which water leaves cells and enters the surrounding fluid. The cytoplasm loses water first, followed by the vacuole is plasmolysis .The gel-like liquid that makes up a cell's cytoplasm. Chemical reactions take place in it as the medium. It gives other organelles in the cell a base from which to function. When a cell or tissue is submerged in an isotonic solution, neither the interior nor the exterior of the cell experiences plasmolysis any net water flow. A hypotonic solution will cause water to permeate inside the cell.
learn more about cytoplasm here:
https://brainly.com/question/1520915
#SPJ4
which of the following statements is true? a. the basic contractile unit for skeletal and smooth muscle is the sarcomere. b. troponin is a protein found in skeletal, but not smooth, muscle. c. the mechanism mediating the release of calcium from the sarcoplasmic reticulum is the same in both smooth and skeletal muscle.
c. Both skeletal and smooth muscle use the same mechanism to release calcium from the sarcoplasmic reticulum.
Does troponin affect smooth muscle?This discovery puts the troponin proteins in a position to function as a regulator of smooth muscle contraction by showing that they are linked to actin filaments within smooth muscle tissues.
Protein molecules called troponins are found in skeletal and cardiac muscle. Troponins are absent from smooth muscle cells. Troponin I, T, and C are the three different forms of troponins.
In smooth muscle, there is no troponin complete protein. Calmodulin functions as troponin in smooth muscles, activates myosin light chain kinase, and results in myosin head attachment to actin.
A particular class of protein called troponin is present in the heart's muscles. Blood often does not contain troponin. Troponin is released into the bloodstream when the heart muscles are harmed.
To learn more about smooth muscle refer to:
https://brainly.com/question/13903265
#SPJ4
axons leaving each olfactory bulb travel along the olfactory tract to reach the olfactory cerebral cortex, portions of the limbic system.
Axons leaving each olfactory bulb travel along the olfactory tract to reach the olfactory cerebral cortex, portions of the limbic system, trace the olfactory pathway from the time an odor reaches the olfactory epithelium until nerve impulses reach their final destination in the brain.
The cranial nerve 1 (CNI), which is part of the olfactory nerve, and the olfactory pathway carry the odor information from the epithelium of the nasal cavity to the brain.
Supporting cells, basal (stem) cells, ciliated olfactory receptor cells, and other cells (replacing old and damaged olfactory receptor cells). Olfactory receptor cell axons that cross the cribriform plate and enter the nasal cavity's roof make up the olfactory nerve CN I. and enter the nasal cavity's roof make up the olfactory nerve CN I.
Know more about Axon at:
https://brainly.com/question/2015960
#SPJ4
Our eyes detect light that lies only within a small region of the electromagnetic spectrum. This region is called visible light. Which of these statements describes the visible spectrum of light as seen by the human eye?.
The visible spectrum of light, as perceived by the human eye, can be described by the adage that the lowest frequency appears red and the highest frequency appears violet. The region of the electromagnetic spectrum that the human eye can see is known as the visible light spectrum.
Humans can see wavelengths between 380 and 700 nanometers (nm). Additionally, the visible light spectrum's frequency is represented by the color. Violet light has the greatest frequencies and the shortest wavelengths, while red light has the lowest frequencies and the longest wavelengths (620-750 nm) (380–450 nm). The statement the lowest frequency appears red, and the highest frequency appears violet sums up how the human eye perceives the visible spectrum of light. Together, the human eye and brain transform the energy of visible light into an electrical impulse that the brain can decipher as an image. The cornea, iris, and pupil aid light entry into the eye's lens when concentrating on an object. The projection of the image on the retina at the rear of the eye is made possible by the lens's ability to bend light, which flips the image.
Learn more about Visible light here:
brainly.com/question/10709323
#SPJ4
the infection of cells by the human immunodeficiency virus (hiv) requires the virus to bind to the cell surface molecule cd3 and a second coreceptor molecule, ccr5 or cxcr4. in scandinavian populations a mutation in ccr5 results in functional loss of ccr5 expression and exists at an allelic frequency of about 10 to 18 percent. homozygous loss-of-function carriers are protected from infection by hiv strains that bind ccr5, and this mutation is also believed to have been protective against smallpox infection. this ccr5 mutation is evidence that mutations
The two kinds of HIV resistance that exist are caused by a genetic variation called CCR5-delta 32. HIV is prevented from entering immune cells by CCR5-delta 32.
The CCR5 co-receptor cells exteriors shrinks more than usual and stops sticking out from the cell as a result of the mutation. The CCR5 co-receptor functions as a doorway for HIV to enter cells. In a sense, the CCR5-delta 32 mutation "locks the door," preventing HIV from entering the cell. 1% of Northern European descendants, especially Swedes, are immune to HIV infection. These fortunate individuals are homozygous carriers of the mutant gene, which means they received a copy from each parent. One copy of the gene was inherited by an additional 10–15% (some sources put the percentage as high as 18%) of people of European ancestry. A mutation with only one copy does not protect against infection. But it does slow the spread of AIDS and lessen the risk of infection for carrier. The CCR5-delta 32 mutation has not been identified in Africans, East Asians, or Amerindians because it is primarily associated with the Eurasia region.
Learn more about HIV
https://brainly.com/question/20890118
#SPJ4
which cells migrate to the gonads, where they differentiate into immature cells that will eventually become sperm or oocytes?
Germline cycle. Shortly after the formation of the diploid zygote, the germ cells differentiate from the somatic cells that will give rise to the rest of the organism.
These primordial germ cells migrate and then interact with specific somatic cells to form the gonad. In most animals, including many vertebrates, the unfertilized egg is asymmetric, with different regions of the cytoplasm containing different sets of mRNA and protein molecules. Primordial germ cells originate in the endoderm of the yolk sac and migrate to the genital ridge to form the indifferent gonad. Gonads 46,XY and 46,XX are initially indistinguishable. Primordial germ cells are highly specialized cells that are precursors to gametes that, after meiosis, develop into haploid sperm and eggs that generate a new organism after fertilization. They transmit genetic and epigenetic information between generations and ensure the survival of a species. In mammals, meiosis occurs only in the gamete-producing cells within the gonads. During meiosis, homologous (paired) chromosomes separate, and haploid cells are formed that have only one chromosome from each pair.
To learn more about unfertilized please click on below link
https://brainly.com/question/14159530
#SPJ4
During interphase, a cell duplicates its __________ and prepares for cell division.
A. mtochondria
B. chromosomes
C. vacuoles
D. chloroplasts
Answer:
B
Explanation:
they need to get copies of the chromosomes for the new resulting cell
Remnant of low-mass or medium-mass star
PLS HELP do tomorrow
A. White Dwarf
B. Neutron Star
A. White Dwarf is a remnant of low-mass star.
B. Neutron Star is a remnant of a medium-mass star.
What are low-mass and medium-mass stars?Low-mass stars are stars that end up as White dwarfs composed of mainly Carbon and Oxygen. Higher temperatures are detected in the cores of medium-mass stars which allows fusion reactions creating oxygen, neon, sodium and magnesium.
White dwarfs only become medium mass stars when they are composed of higher mass elements. Neuron stars are burned-out cores of collapsed stars with high mass. A neuron star forms when stars of medium size reach the end of its life then explodes as a supernova.
Find out more on low-mass and medium-mass stars here: https://brainly.com/question/1128503
#SPJ1
you find 10 mutants, and want to investigate them further. you wonder if a complementation test will help you determine how many unique genes have been mutated in these 10 mutants. first, you cross mutant one with a wild-type, and you see that the phenotype of the offspring is mutant. from this, you can conclude that complementation tests will definitely not work to help you answer your question.
A single wild type phenotype exhibits numerous mutations. Whether any of mutations affect just one gene, or if each mutation affects one of many genes required for expression of a phenotype.
The complementation test is the simplest way to separate the two possibilities. The test is straightforward to carry out; two mutants are crossed, and the F1 generation is examined. We infer that each mutation is in one of the two potential genes required for the wild type phenotype if the F1 exhibits the wild type phenotype. Alternatively, if the F1 exhibits a mutant phenotype rather than the wild-type phenotype, we infer that the two mutations are present in the same gene.
The mutant allele of gene A and the wild type allele of gene B, each supplied by one of the mutant parents, will both be expressed in the F1 when it is born. The F1 will also express the wild-type allele for gene A and the mutant allele for gene B provided by the other mutant parent. The wild type phenotype is shown because the F1 is expressing both of the required wild type alleles. A mutant form of the gene will be expressed by each homolog in the F1 if the mutations are in the same gene, on the other hand. A mutant phenotype develops in the absence of a normally functioning gene product in the individual.
Learn more about phenotype
https://brainly.com/question/20730322
#SPJ4
species richness is only one measure of biodiversity for a community, but it is frequently used. can you think of any shortcomings or assumptions of assigning conservation priorities to various locations based on species richness estimates?
Biodiversity counts the number of distinct species that exist in a given area. It includes all living things and includes a wide range of life. Each species is crucial to preserving the ecological balance.
The quantity of species in a community is known as its species richness. The more complex concept of species diversity takes into account both the number of species present in a community and the abundance of each species. An index, such as Shannon's Index H', is typically used to describe species diversity.
Learn more about Biodiversity
https://brainly.com/question/20935770
#SPJ4,
Genetic analysis of the dna isolated from an unknown organisms indicates that it contains the gene that codes for telomerase. Based on this information alone, you can conclude that this organism.
Genetic analysis of the DNA isolated from an unknown organisms indicates that it contains the gene that codes for telomerase, the organism is Eukaryotes.
The ribonucleoprotein telomerase, also known as terminal transferase, extends the 3' end of telomeres by introducing a species-dependent telomere repeat sequence. Most eukaryotes have telomeres, which are regions of repetitive sequences, at each end of their chromosomes. Telomeres shield the chromosomal end from DNA deterioration or fusion with nearby chromosomes. Because it lacks telomerase, the fruit fly Drosophila melanogaster depends on retrotransposons to preserve its telomeres. When lengthening telomeres, a reverse transcriptase enzyme known as telomerase uses its own RNA molecule as a template (for example, in Trypanosoma brucei, utilizing the sequence 3′-CCCAAUCCC-5′). Even while telomerase is active in gametes and the majority of cancer cells, the majority of somatic cells frequently lack it or only very faintly express it. With the cloning of the RNA and catalytic components of human telomerase and the creation of the polymerase chain reaction (PCR)-based assay for telomerase activity known as the TRAP assay, which examines telomerase activity in a variety of cancers, researchers at the biotechnology company Geron established the role of telomeres and telomerase in cell aging and cancer.
To know more about telomerase please refer: https://brainly.com/question/13686049
#SPJ4
Which proteins lends structural support to the chromosome and helps activate or silence gene expression?.
Histones serve as structural proteins. Histones are encircled by DNA, which gives chromosomes their structure. Histones can be changed by adding or removing chemical groups like methyl or acetyl groups.
What protein helps a chromosome maintain its structural integrity?A chromosome's structural support is provided by a protein called a histone. Each chromosome has a long DNA molecule that must fit into the cell nucleus. By wrapping around histone protein complexes, the DNA achieves this and gives the chromosome a more compact shape.
Who or what is responsible for suppressing gene expression?Posttranscriptional gene silencing (PTGS) and transcriptional gene silencing (TGS) both work to degrade already-existing RNA. Although the outcomes are comparable, TGS's processes are species-specific, as are PTGS. De novo DNA methylation is connected to gene silencing in the majority of eukaryotes.
To know more about proteins visit:-
brainly.com/question/17095120
#SPJ4
During the elongation phase of translation, the mRNA passes between ______, catalyzing the binding of ______ to each other.
During the elongation phase of translation, the mRNA passes between two ribosomal subunit catalyzing the binding of amino acids to each other.
The ribosome continues to translate each codon in turn throughout the elongation step. Each appropriate amino acid is added to the expanding chain and joined by a peptide bond. Elongation will continue until all of the codons have been read.
Translation is the process of creating a protein from the information contained in a messenger RNA molecule (mRNA).
The aminoacyl-tRNA synthetases catalyze a two-step process in which an amino acid is esterified to the 3′ end of a tRNA and one molecule of ATP is hydrolyzed, resulting in aminoacyl-tRNA, AMP, and PPi.
They interact by using a powerful force! In reality, the nuclear strong force "leaks out" of each proton and neutron, resulting in the nuclear strong force that holds the nucleus together.
Learn more about to ribosomal visit here:
https://brainly.com/question/241631
#SPJ4
phagocytosis begins with the recognition of pathogens by the phagocyte. this can occur through recognition of pamps by prrs. a good example of a pamp would be:
It is true that phagocytes have evolved specialized molecules known as pattern recognition receptors (PRRs) that directly interact with PAMPs, allowing them to engage with pathogens swiftly and efficiently.
Pattern Recognition Receptors (PRRs) are proteins that can recognize compounds contained in infections (known as Pathogen-Associated Molecular Patterns-PAMPs) or molecules produced by injured cells. They are considered an innate immune system component because they arose phylogenetically prior to the formation of adaptive immunity. Pathogen-associated molecular patterns are recognized by pathogen recognition receptors, a class of germ line-encoded receptors.
Hence, pattern recognition receptors (PRRs) are genetically inbuilt to work against pathogens.
To know more about innate immune system.
brainly.com/question/15029679
#SPJ4
Full Question :Phagocytes interact speedily and effectively with pathogens because they have evolved specialized molecules called pattern recognition receptors (PRRs) that interact directly with PAMPs. True/false.
Cell division is the process of taking a parent cell and splitting it into 2 new genetically identical daughter cells. All organisms go through the process of cell division. What do bacteria use cell division for and how?.
The cell that is dividing in a cell division process is referred to as the "parent" cell. Two "daughter" cells are created when the parent cell divides.
What happens during the division of a parent cell into two daughter cells?When a parent cell divides to create two identical daughter cells, the process of nuclear division known as mitosis takes place in eukaryotic cells. Mitosis refers particularly to the division of the duplicated genetic material contained in the nucleus during cell division.
Cell division definition Short response?The process by which a cell, known as the parent cell, divides into two cells, known as daughter cells, is known as cell division. Everything inside a cell divides when it divides. The mitochondria also divide together with the chromosomes and nucleus.
To know more about Cell division visit:-
https://brainly.com/question/13312481
#SPJ4