Answer:
ribosome
Explanation:
just took the test
The ability of a virus to infect and reproduce in a host cell is least affected by ribosome. So, the correct option is D.
What is Ribosome?All cells include ribosomes, which are large molecules responsible for the synthesis of biological proteins. To create polypeptide chains, ribosomes combine amino acids in the order dictated by the messenger RNA molecules' codons. The short and big ribosomal subunits are the two main parts of ribosomes.
Both eukaryotic and prokaryotic cells contain ribosomes, which are specialized cell organelles. Ribosomes are essential for the creation of proteins in every live cell. The messenger ribonucleic acid (mRNA) that this cell organelle binds to carries information that is decoded by the mRNA's nucleotide sequence.
They enter the ribosomal at the acceptor site and transfer RNAs (tRNAs) that contain amino acids. Once bound, it adds amino acids to the expanding protein chain on the target surface. The ability of a virus to infect and reproduce in a host cell is least affected by ribosome.
Therefore, the correct option is D.
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Two solutions are separated by a semipermeable membrane that is permeable to potassium but not chloride or sodium ions. Solution A on the left contains a solution that is 100 mM potassium, while Solution B on the right has a concentration of potassium chloride of 1 mM. There is an electrode in both solutions, and a comparative assessment of voltages between the two compartments is being made. The investigator doing the study decides to call side B ground potential (or, in other words, defines it as 0).
A. What is the value for the chloride equilibrium potential in this condition?
B. In one sentence, describe why it has a positive or negative value. C. What would be the value of the chloride equilibrium potential? (show how you calculate this) D. What is the voltage of side B relative to side A? E. Does the chloride equilibrium potential contribute significantly to the voltage actually being measured by the investigator? Why or why not (one sentence)?
What is the smallest or most specific level of organization organization you and your neighbors all have in common
Answer:
The cell
Explanation:
The smallest or most specific level of organization that all living organisms (including myself and my neighbors) have in common is the cell.
This is in accordance with the cell theory which has three basic components, including:
1. The cell is the basic unit of life
2. All living organisms are made up cells
3. Cells arose from pre-exsiting cells.
Other levels of organisation include tissues which are group of cells specialized for a certain function, organs which are group of tissues serving similar function, and systems which are group of organs working together as a unit.
Answer:
Population
Explanation: got it right sis !
When carbohydrates are digested, the monomer is/are_.
•amino acid
•fats and oils
•nucleotides
• sugars
Explain the concept of functional specialisation and describe two brain areas that exhibit functional specificity
Answer:
Functional specialisation explains how the two cerebral hemispheres are specialized in different types of mental activity.
Explanation:
The nervous systems of all animals have in common a number of basic functions, the most notable of which are control of movement and analysis of sensation. What sets the human brain apart is the variety of more specialized activities it is capable of learning and the integration and control of the different functions. In 90% of the population the left cerebral hemisphere specializes or controls the ability to speak and write, and the ability to understand spoken and written language. In the remaining 10%, the right hemisphere or both hemispheres dominate spoken or written language. The right cerebral hemisphere perceives tactile stimuli and spatial vision relationships better than the left hemisphere. Another area, the posterior-parietal lobe is related to the tactile abilities, it is particularly involved in the abilities to name and point out the parts of the body, one's own and of others, as well as in the abilities to name, distinguish, recognize or draw the fingers of the hand. The parietal lobe is particularly involved in perceptual accuracy in locating stimuli, in estimating line orientation (parietal-frontal lobe) and in the ability to estimate the number of stimuli presented in the central visual field.
Many traditional household appliances, including clothes dryers, use an
excessive amount of electricity. One solution is to replace older appliances
with modern appliances that are more energy-efficient.
Which of the following behaviors could further refine this solution?
OA. Use the energy-efficient appliances instead of more conservative
tactics.
B. Use additional conservation tactics, like sometimes hanging
clothes outside to dry.
OC. Use energy-efficient appliances and traditional appliances at the
same time.
OD. Use the energy-efficient appliances more often than you need to.
Answer:
B. Use additional conservation tactics, like sometimes hanging
clothes outside to dry.
Explanation:
Ap3x
Using extra energy-saving techniques, such as occasionally hanging clothes outside to dry them, could improve the solution of replacing outdated equipment with newer, more energy-efficient appliances. So, the correct option is B.
What are energy-saving techniques?Energy-saving technology, commonly referred to as green technology, is innovation that enhances upon or replaces current systems in order to save energy. Technology of this kind often helps operators save money while reducing the negative effects of human interference with the environment.
Instead of leaving appliances on standby, turn off the power source to conserve the maximum energy. As you leave the house or go to bed, turn off the heater, air conditioner, and other equipment. Turn off the computer and any other devices, including printers and Wi-Fi routers, at night or while we're away.
Using extra energy-saving techniques, such as occasionally hanging clothes outside to dry them, could improve the solution of replacing outdated equipment with newer, more energy-efficient appliances.
Therefore, the correct option is B.
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7. Suppose you were culturing a population of bacteria at 15 degrees Celsius and then raised the temperature of the culture to 37 degrees Celsius. What effect do you think this might have on the fatty acid composition of the membrane? On the transition temperature of the lipid bilayer? On the activity of membrane desaturases?
Answer:
See below
Explanation:
An increase in the temperature will result in greater fluidity of the lipid bilayer membrane, since the unsaturated fatty acids are increased. The membrane tends to be stiff at lower/colder temperatures.The transition temperature refers to the temperature at which the membrane goes from solid to liquid state, which will be raised in this case. This is due to the increase in saturation of fatty acids.The activity of the enzymes membrane desaturases will decrease under these conditions.The molecules in the image below are able to move across the cell
membrane through channels in the membrane proteins. The cell does not use
any energy to move the molecules down the concentration gradient. What
kind of transport is the cell using?
Answer:
A
Explanation:
It is impossible for RNA to store genetic information, because:
a. RNA does not base pair and therefore cannot be replicated.
b. enzymes cannot process genetic information in the form of RNA.
c. RNA forms complex folded structures.
d. RNA is very unstable.
e. None of the above answers is correct; RNA can store genetic information.
Answer:
a. RNA does not base pair and therefore cannot be replicated.
In a few generations, this population of beetles changed.
After few generations
Which is the most likely explanation for the change?
Answer:
https://brainly.com/question/1852726#:~:text=Answer%20Expert%20Verified&text=The%20right%20answer%20is%20D,(also%20called%20genetic%20diversity).
Explanation:
Choices:
The beetle population moved to a greener habitat.
A natural disaster almost caused the extinction of the population.
The beetle population’s food sources decreased dramatically.
A mutation resulted in a new color of insect.
Answer: A
The beetle population moved to a greener habitat.Cant Be D Did test
Which natural resource is formed from the deposition of sedimentary rocks?
The answeris Coal to this answer
Hopes this helps
Please provide a legitimate answer and provide an explanation for the question below.
Why is a supply of oxygen important for muscle contraction?
Answer:
For muscle contraction to take place oxygen is needed. ... Oxygen allows the body to convert glucose into ATP more efficiently without creating a waste product.
Cellular respiration is the process in which your muscles use oxygen to produce ATP energy. ... Whether you're exercising or not, the oxygen in your body is used to break down glucose and create the fuel for your muscles called ATP
ATP= Adenosine triphosphate
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PLEASE MARK ME BRAINLIEST.
Explanation:
magine that the animal body produced sperm and eggs with mitosis instead of meiosis. What chromosome number would the autosomes of the third generation have if the first generation had four chromosomes
Answer:
sixteen chromosomes
Explanation:
this is because the
The sum of the Genetic traits in a population is called its
Answer and Explanation:
The gene pool is the sum of all the alleles in a population. Sometimes, allele frequencies within a population change randomly with no advantage to the population over existing allele frequencies. This phenomenon is called genetic drift.
Answer:
gene pool
Explanation:
During exercise, sensory receptors detect changes in oxygen and carbon dioxide levels in the blood. This information is then sent to the brain's medulla, which causes the heart to beat faster and increases the rate of breathing. Exercising also causes the nervous system to signal the pancreas and thyroid gland to release hormones which regulate metabolism. Which statement is best demonstrated by this scenario? A. Hormones act as signal molecules between all body systems. B. Increased heart rate and blood flow decrease oxygen supply. C. Exercise is important for the body to function properly. D. Nerves transmit and respond to every major system in the body.
Answer:
Exercise is very important for the body to function properly.
Nerves transmit and respond to every major system in the body.
Identical twins are produced from the same sperm and egg (which splits after the first mitotic division), whereas fraternal twins are produced from separate sperm and separate egg cells. If two parents, one with brown eyes (a dominant trait) and the other with blue eyes (the recessive trait) produce one twin boy with blue eyes, what is the probability that a fraternal twin will transmit the blue eye allele to his or her offspring
Answer:
This is 25%
Explanation:
Analysis, Since the dominant brown eyed parents produce blue eye child, this shows they are heterozygote dominant
However,this fraternal twin is not genetically identical, due to the blue eye color,(recessive) but the fact remain that they are the parents.(because he inherited the recessive allele from each of the parent)Therefore the probability is 25%.
This is because he is the only one out of the 4 kids( based on Mendelian fashion) this is 1/4,25%
Fraternal tweens are produced from different maternal and paternal gametes. The blue-eyed tween has 100% probability of transmitting the blue-eyes allele to the offspring, while the brown-eyed tween has 50% probability.
Available data:Fraternal twins are produced from separate sperm and separate egg cells.Brown eyes ⇒ Dominant traitBlue eyes ⇒ Recessive traitWe will name B to the dominant allele that codes for brown, and b to the recessive allele that codes for blue eyes.
So, the possible genotypes and phenotypes are
Gentoype Phenotype
BB Brown eyes
Bb Brown eyes
bb Blue eyes
Solving the problemThe parent with blue eyes must be only bbThe parent with brown eyes must be either BB or BbFor the twin boy to have blue eyes, he must have received two recessive alleles, one from the mother and one from the father.
So the father is heter0zyg0us for brown eyes, Bb.
Cross: Bb x bb
F1) 1/2 of the progeny is expected to be brown-eyed, Bb
1/2 of the progeny is expected to be blue-eyed, bb.
So we have two genotypes for the tweens, Bb and bb.
bbThe bb tween has blue eyes and is h0m0zyg0us recessive for the trait. So the probability that this fraternal twin will transmit the blue eye allele to his or her offspring is 100% This tween can only provide recessive alleles to his or her progeny. BbThe Bb tween has brown eyes and is heter0zyg0us for the trait. So the probability that this fraternal twin will transmit the blue eye allele to his or her offspring is 50% This tween can provide one dominant or one recessive allele to his or her progeny.So, the blue-eyed tween has 100% probability of transmitting the blue-eyes allele to the offspring. The brown-eyed tween has 50% probability of transmitting the same allele to the descendants.
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Which of the following is not a method of heat transfer? Conduction Insulation Radiation Convection
Answer:
insulation is the correct answer
The method that is not one of the heat transfer method is insulation.
Heat transfer can be regarded a term in thermal engineering use to describe the generation as well as the use and conversion, exchange of thermal energy that exist between physical systems. Heat transfer can be done with different mechanismsThese are: conductionconvectionRadiationConvection can be regarded as the flow of heat in fluids, these fluids could be warmed gas, water.Conduction can be regarded as the movement of heat through objects that are in physical contact, like two metalsRadiation can be regarded as the energy which appears from a source then travels through space, this do contain wave-like properties. Insulation can be regarded as setting up a barrier between two objects, usually between hot and the cold object , so that heat reduction can be achieved.Therefore, Insulation is not heat transfer mechanism, it i a way to reduce heat loss.
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whas the complimentey DNA strand for the folloing DNA sequence AATTCGGGGTTT
Answer:
DNA: TTAAGCCCCAAA
RNA: UUAAGCCCCAAA
Explanation:
A binds with T (Apples on Trees)
C binds with G (Cows eat Grass)
So complementary sequence would be TTAAGCCCCAAA
For RNA sequence:
For RNA:
A binds with U
T binds with A
C binds with G
So RNA complementary will be UUAAGCCCCAAA
In many popular fictional movies and books, future projections of the earth (and other fictional planets) show a world devoid of plants, with civilization bustling with activity throughout a worldwide city of skyscrapers hundreds of stories high. Based on your reading about photosynthesis and cellular respiration (Chapters 9 & 10), is this future world possible? Explain why it is or is not possible in terms of energy flow in the biosphere.
Explanation:
Cellular respiration and photosynthesis are two important physiological processes which formed the basis of life on Earth.
Evolutionary studies have shown that process of photosynthesis evolved earlier in organisms which led to the production of oxygen. This led to the formation of aerobic cellular respiration in organisms.
In the given, a world devoid of the plant is not possible because the plants perform the role of primary producers that is they utilize the available carbon dioxide and water and form the first stable energy molecule called glucose.
This glucose is broken down by the process of cellular respiration to further usable form. These two processes maintain the flow of energy on Earth.
Thus, without these two processes, the fictional world will not be possible.
What peritoneal fold that connects the liver to the stomach
This organelle is found only in plants; it takes up a lot of space and strengthens cells and helps to support the entire plant.
A. Nucleus
B. Central vacuole
C. Mitochondria
D. Chloroplast
Match the type of metamorphism to its location.
Contact
Close to a hot spot
Regional
Along a transform
boundary
Impact
Near a crater
Dynamic
At deep subduction areas
Answer:
Contact -- Close to a hot spot
Regional -- At deep subduction areas.
Dynamic -- Along a transform boundary
Impact -- Near a crater
Explanation:
Contact metamorphism occurs close to the igneous intrusions and is resultant wot a high temperature and only a small surrounding area is heated by the magma and is restricted to zones surrounding the intrusion. The regional metamorphism is large scale metamorphism and is due to the convergence of the continental crust along the tectonic margins. The dynamic metamorphism are associated with the zones of moderate stains fault zones. The impact of metamerism is a result of the heat and high pressure and this can lead to the high pressure within rocks.Which of the following hormones is synthesized in hypothalmus and secreted from pitutary? Vasopressi or adrenocorticotropic hormones
Answer:
Vasopressin
It is synthesized in the hypothalamus and then secreted by the posterior lobe of pituitary gland
During cell division, it is essential that the genetic material be distributed equally to the two daughter cells. This is accomplished through the participation of which one of the following organelles?
1. Centrioles
2. Rinosomes
3. Peroxisomes
4. Golgi apparatus
5. Nucleolus
Answer:
1. Centrioles
Explanation:
Centrioles are the main organelles in cellular division as they are responsible for making mitotic spindle fibers (which attach to kinetichore on chromosomes) and separate the sister chromatids (so that genetic material can be distributed equally to the two daughter cell)
what is the answer
pls help do not be rude
answer number 5
thx pick one answer
Answer:
The invisible path the earth takes around the sun is called an orbit. all planets have orbits at varying speeds and some are even elliptical.
hope this helps!!
The movement of matter across a cell membrane against a concentration difference is called (active transport / passive transport / facilitated diffusion / osmosis), and it requires (aquaporins / energy / homeostasis / osmotic pressure).
Answer:
active transport, energy
Explanation:
Moving against a concentration gradient requires energy, so it is known as active transport, as opposed to passive transport, which involves moving with a concentration gradient and doesn't require energy.
Active transport is the movement of matter across a cell membrane against a concentration difference, this process requires energy.
The mode of transport that demands the consumption of metabolic energy is called activated transport, since the movement is carried out against a gradient of chemical potential.
It is a transport that is carried out against the gradient, be it concentration or electrical and, consequently, energy expenditure in the form of ATP will be required.Active transport is carried out by means of pumps and also presents forms of monotransport, cotransport and countertransport.Therefore, we can conclude that active transport requires energy to be carried out, since it is a type of movement that goes against the concentration gradient.
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the frequency of down syndrom increase with
the age of parents ?
Answer:
See below
Explanation:
Researchers found that the rate of Down syndrome among parents over 40 was 60 per 10,000 births, which is six times higher than the rate found among couples under 35 years old.
Which of the following factors might cause checkpoint genes to interrupt cell division? Check all that apply. Neurological signals sent from fear responses in an organism tell the cell to stop. The cell's DNA has been damaged somehow. The cell's DNA was replicated incorrectly.
Answer:
Neurological signals sent from fear responses in an organism tell the cell to stop. The cell's DNA has been damaged somehow. The cell's DNA was replicated incorrectly.
Explanation:
All the three options given can cause checkpoint genes to interrupt cell division.
Checkpoint genes are transcription genes that control cell cycle and sense defects during cells processes like DNA replication, segregation e.t.c and create response till the defects is repaired in the DNA. The important of checkpoint is that it ensure enough nutrients are available to support for division, ensure that the DNA has not been damaged, ensure that cells DNA is copied correctly and make sure cells have enough RNA for their protein synthesis.
Checkpoints genes can interrupt cell division if the dna is damaged, Dna is copied incorrectly and neurological signal sent from fear responses in an organisms tell the cells to stop.
Answer:
The cells DNA has been damaged somehow and The cells DNA was replicated incorrectly
Explanation:
sometimes, these checkpoint genes are mutated or damaged and, thus, are unable to tell a damaged cell to stop dividing. When this occurs, the damaged cell gives rise to many damaged cells, which in turn create more damaged cells. These dividing cells form a NEOPLASM
A science club has 16 members. How many ways can a president, a vice president, and a treasurer be selected from the members?
A 96
B. 560
OC 1,120
D. 3,360
Answer:
The answer would be D. 3,360
Explanation:
The solution is found by multiplying 16 times 15 times 14. The club has 16 members and after one role (president) is filled, there are 15 left to fill the next (vice). The same goes for the next role (treasurer). So 16 is multiplied with 15, then 14. This is more of a math question that biology btw.
Assume that plant weight is determined by a pair of alleles at each of two independently assorting loci (A and a, B and b) that are additive in their effects. Further assume that each allele represented by an uppercase letter contributes 4 g to weight and that each allele represented by a lowercase letter contributes 1 g to weight. If a plant with genotype AA BB is crossed with a plant with genotype aa bb, what weights are expected in the F, progeny?
a.1g
b. 4g
c. 8g
d. 10g
e. 16g
Answer:
10g
Explanation:
A cross between genotype AA BB is crossed with a plant with genotype aa bb will produce
Parent genotype:AABB x aabb
Gametes: AB x ab
F1 generation - AaBb
Since an uppercase letter contributes 4 g to weight and each allele represented by a lowercase letter contributes 1 g to weight.
Thus, 4+1 + 4 + 1 = 10g
If you were a scientist developing a drug that would block viral replication which steps would you choose to block? Explain your answer in detail?
Answer:
The step to take is developing antiviral agents that will block all the steps in transcription process or viral replication. These will stop or block production of new RNA or DNA for new virions which will make it difficult for the virus to multiply and cause Infections.
An example of such drug is aciclovir. This drug stop the production of new DNA or RNA so that viral protein cannot code or gather together. These agents mimick the DNA and RNA so that the virius will not be able to replicate their genetic material through it.
Explanation:
Blocking viral replication refers to process that hinder or inhibit the multiplication of invading virus in the body. This is done by the use of antiviral agents. These agents fight the invasion and halt virus replication.