Key ideas. All primates are descended from creatures who lived in trees, and they all possess adaptations that make it possible for them to climb trees, such as a rotating shoulder joint, separated large toes and thumbs for grabbing, and stereoscopic vision.
The opposable thumb and big toe, prehensile hands and feet, nails rather than claws on the digits, the ability to sit for long periods of time in an upright position without using the upper limbs for balance, dependence on vision, and diminished sense of smell are all characteristics that are derived from primates.
A short muzzle, a relatively poor sense of smell, prehensile five-digit hands and feet with flat nails instead of claws, acute vision with depth perception from forward-facing eyes are just a few of the characteristics that set primates apart from other mammals.
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what is the original source of energy in the food you eat?(1 point) responses plants plants sugar sugar photosynthesis photosynthesis sun
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules.
The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to do work, such as cellular respiration. The energy content of all food molecules can be traced back to the Sun. It is the process of photosynthesis that locks energy from the Sun into simple carbohydrates like glucose. In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide into glucose. Oxygen is released as a byproduct. Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the sun's energy to convert water and carbon dioxide into a sugar called glucose. Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
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The outermost membrane of a euglenid chloroplast is thought to have been derived from what part of an original host cell that engulfed a green alga?.
The digestive vacuole (DV) membrane of the host serves as the basis for the perialgal vacuole (PV) membrane that protects the symbiotic algae.
What served as the chloroplasts' point of origin?Chloroplasts were initially created in eukaryotes through the endosymbiosis of a cyanobacterium; they subsequently spread through host diversification and the eventual engulfment of eukaryotic algae by previously nonphotosynthetic eukaryotes.
Of these protists, which is thought to have originated after a secondary endosymbiosis?The hypothesis that chlorarachniophytes originated via secondary endosymbiosis is supported by a number of lines of evidence. Chlorarachniophytes are photosynthesis-capable because of the chloroplasts that remain inside the endosymbionts of green algae. A remnant nucleus is also present in the green algal endosymbiont.
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TRUE/FALSE. during facilitated diffusion, a given carrier protein can move a substance either into or out of the cell depending on its concentration gradient.
During facilitated diffusion, a given carrier protein can move a substance either into or out of the cell depending on its concentration gradient the statement is true.
What is diffusion?
The process of a substance's molecules moving over a semipermeable barrier from an area of higher concentration to an area of lower concentration is called diffusion.
What is concentration?
The capacity for concentration concentrating more precisely on a specific thing. All of that clamor is stealing my focus. a major itself or a specialization within a major in academia.
A specific carrier protein can transport a substance into or out of the cell depending on the gradient of the substance's concentration during assisted diffusion.
comprise the movement of substances along concentration gradients. protein. One carrier protein can bind and carry numerous different kinds of molecules.
Therefore, during facilitated diffusion, a given carrier protein can move a substance either into or out of the cell depending on its concentration gradient the statement is true.
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red-green colorblindness in humans is caused by a sex-linked recessive allele. a colorblind man marries a woman with normal vision whose father was colorblind. the couple has a son. what is the probability that he is colorblind?
1/4 or 25% will be the probability that the child born is colorblind when a colorblind man marries a normal vision woman.
The three distinct varieties of colorblind are anomalous trichromatism, dichromatism, and monochromatism. The inability to distinguish between the hues of red and green is a common symptom of colour blindness. For inherited colour blindness, there is no cure. Treating the underlying problem may be helpful if colorblind is brought on by another illness. Despite being seen as a minor impairment, colorblindness affects slightly less than 10% of all men, making this audience very large.
Simply put, probability measures how probable something is to occur. We can discuss the probabilities of various outcomes to determine how likely they are whenever we are uncertain about the result of an event. Statistics is the study of events subject to probability.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer: B. increase
Explanation:
Adaptation is what species do to survive or increase their survival rate.
What is pollution?
Explain how pollution can negatively affect an ecosystem.
Use an example from your own knowledge to support your answer.
Now help me i only have 5 mins left to have this done pleeaeee
Biologists divide the biosphere into ______, which are the major types of ecosystems on earth.
The biosphere is divided into the major categories of ecosystems found on earth, according to biologists.
What criteria are used to categorize biomes?An place is categorized as a biome based on the species that call it home. Scientists can define a biome by defining the temperature range, soil type, amount of light, and water that are peculiar to a location and create niches for particular species.
What are the two primary categories for biomes?Deserts, woods, grasslands, savannas, tundra, and freshwater ecosystems are examples of biomes that fall under the categories of terrestrial and aquatic, respectively.
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The human eye is most sensitive to green light of wavelength 505 nm. Experiments have found that when people are kept in a dark room until their eyes adapt to the darkness, a single photon of green light will trigger receptor cells in the rods of the retina.
Due to the wavelength of green light activating two of the three different types of color receptors in the eye, green light is the color that human eyes are most sensitive to. With a wavelength of 555 nanometers, green light falls in the middle between long wave and medium wave light.
What effects does green have on your eyes?You staying calm
Some scientists and academics also think that because our eyes are most adept at detecting the wavelengths associated with the color green, the shade may have a calming effect on us. Our nervous system needs less effort to perceive the colors, so
Green is more sensitive, why?Due to the stimulation of two of the three types of cones, L and M, green light (555 nm) has the highest sensitivity to the eye.
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What are the four classes of large organic molecules important to life on earth?.
Proteins
Carbohydrates
Lipids
Nucleic acids
Hope it helped
which answer correctly compares the primary transcript in a prokaryotic cell with the functional mrna?which answer correctly compares the primary transcript in a prokaryotic cell with the functional mrna?the primary transcript is the same size as the mrnathe primary transcript and the mrna both contain intronsthe primary transcript is larger than the mrnathe primary transcript is smaller than the mrna
What is the relationship between the functional mRNA and the primary transcript found in the nucleus of a prokaryotic cell? The size of the mRNA and the main transcript is the same.
The DNA coding sequence contains a specific triplet of nucleotides known as AAA. Due to the close proximity of the ribosomes to the nascent mRNA molecules, translation of a transcript in prokaryotes starts before the transcript is finished. However, in eukaryotes, transcripts undergo nucleoplasmic modifications before being exported to the cytoplasm for translation. An average primary transcript made by RNA polymerase II is 7,000 nucleotides long, though some can reach 20,000 nucleotides in length, according to studies of these transcripts.
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the most common complication of pregnancy is: group of answer choices gestational diabetes preeclampsia severe nausea and weight loss caused by hyperemesis gravidarum ectopic pregnancy
Most women in pregnancy experience nausea & vomiting, and only a small minority experience the extreme variant known as hyperemesis gravidarum.
Preterm birth, fetal growth restriction (FGR), intrauterine fetal mortality, and HELLP syndrome with increased risk of liver rupture and eclampsia are the most frequent consequences associated with preeclampsia. It's typical to have nausea or sickness in the early weeks of pregnancy. Although some women may experience morning sickness for more than three months, it often happens during the first 3 months of pregnancy. Even though it is referred to as morning sickness, it might continue all day. If a woman does not already have diabetes, she may acquire gestational diabetes during pregnancy. Gestational diabetes affects somewhere between 2% and 10% of pregnancies each year in the US. Maintaining control of gestational diabetes will ensure a safe pregnancy and healthy birth.
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in 1977, rafael guzamn, a mexican biologist, discovered a previously unknown wild relative of corn that is resistant to many of the viral disease that infect domestic corn. agriculturalists belief that crossbreeding the wild corn with domestic corn would improve current corn crops. in this case, which type of biodiversity is important?
in this case, genes type of biodiversity is important.
The research of genes, genetic mutation, and hereditary factors in organisms is known as genetics. It is an important branch of biology because heredity is essential to the evolution of organisms. Gregor Mendel, a Moorish Roman catholic friar operating in Brno in the mid-1800s, was the first person to perform science studies on genetics. Genetics has its roots in the development of evolutionary theories. Following Charles Darwin and Wallace's research, the origin of species and how species variability was developed in 1858.Biodiversity is the variety of daily existence which can be discovered in a particular region, such as living creatures, plants, microorganisms, and even microorganisms such as bacteria. Almost all of these species and microbes work collaboratively in ecologies to keep the balance and sustain life, similar to an intricate web.
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9. hypersensitivity reactions to penicillin have been identified that correspond to what type of reactions?
However, hypersensitivity is its main side effect, which can cause nausea, vomiting, pruritus, urticaria, wheezing, laryngeal oedema, and finally cardiovascular collapse.
Any unfavorable immune system-induced reactions, such as allergies and autoimmune diseases, are referred to as hypersensitivity (also called hypersensitive reaction or intolerance). These reactions—often referred to as an immune system overreaction—can be harmful and painful. Contrast this immunologic phrase with the psychiatric term "hypersensitive," which refers to someone who may be abnormally sensitive to physical (such as sound, touch, light, etc.) and/or emotional stimuli in immune system. Despite the fact that there is a correlation between the two, research have shown that those with ADHD (a psychiatric disease) are more likely to also have hypersensitivity reactions.
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there are three alleles at a specific locus in a population of humans. allele d1, d2, and d3 with frequencies 0.42, 0.30, and 0.28 respectively. true or false or cannot determine: allele d1 is dominant.
The D1 allele is the most frequent at a specific locus in a population of humans: alleles D1, D2, and D3 with frequencies of 0.42, 0.30, and 0.28 respectively.
A population's allele frequency is calculated by dividing the number of copies of the allele of interest in that population by the total number of copies of all the alleles present at that particular genetic locus.
If gametes accidentally bind together to form zygotes and all the alleles occur at the identical frequency in the sperm and egg cells, the probability that any two alleles will combine to create a certain genotype equals the product of the allele frequencies.
The complete question is:
There are three alleles at a specific locus in a population of humans: alleles D1, D2, and D3 with frequencies of 0.42, 0.30, and 0.28 respectively. What can you say confidently about the D1 allele? Check all that apply.
A. The D1 allele is the most frequent.
B. The D1 allele is advantageous.
C. The D1 allele is dominant.
D. The D1 allele is rare.
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If a plant that is homozygous dominant for a gene is crossed with a plant that is homozygous recessive for the same gene, what is the probability that the offspring will have the same genotype as one of the parents? Same phenotype?
If a plant that is homozygous dominant for a gene is crossed with a plant that is homozygous recessive for the same gene, the probability that the offspring will have the same genotype as one of the parents is 0. The probability that the offspring will have the same phenotype as one of the parents is 0.25.
In genetics, a gene is a unit of heredity that is passed down from parent to offspring. Genes are made up of DNA, and they encode the instructions for making proteins that determine an organism's traits. A gene can have different versions, called alleles, that can result in different traits.
When an organism is homozygous for a gene, it means that it has two copies of the same allele for that gene.
For example, if a plant is homozygous dominant for a gene, it means that it has two copies of the dominant allele for that gene. Similarly, if a plant is homozygous recessive for a gene, it means that it has two copies of the recessive allele for that gene.
When two plants that are homozygous for different alleles of the same gene are crossed, the offspring will inherit one allele from each parent. In this case, all of the offspring will be heterozygous for the gene, meaning that they will have one copy of the dominant allele and one copy of the recessive allele.
Since none of the offspring will have the same genotype as either parent, the probability that the offspring will have the same genotype as one of the parents is 0.
The phenotype of an organism is the physical expression of its genotype, or the combination of alleles that it carries for a given gene. In this case, the plants that are homozygous dominant for the gene will have the dominant trait, while the plants that are homozygous recessive for the gene will have the recessive trait.
Since the offspring of the cross will be heterozygous for the gene, they will have the dominant trait. Therefore, the probability that the offspring will have the same phenotype as one of the parents is 0.25, or 1 in 4.
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The peripheral nervous system is composed of the:_______.
The peripheral nervous system is divided into two main parts: Autonomic nervous system (ANS) and Somatic nervous system (SNS).
The peripheral nervous system is one of two components that make up a bilateral animal's nervous system, the other being the central nervous system. The PNS is made up of nerves and ganglia that are located outside of the brain and spinal cord.
The two components are the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS, which includes the brain and spinal cord, is the site of information processing and control, whereas the PNS includes all nerves in the body that are connected to the CNS (brain and spinal cord).
The nerves and ganglia are peripheral nervous system organs. Nerves are made up of bundles of nerve fibers, just like muscles are made up of bundles of muscle fibers. Cranial and spinal nerves connect the CNS to peripheral organs like muscles and glands.
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which of the following is not an example of dysbiosis? choose one:a. increased amount of clostridioides difficile in the gut caused by antibiotic therapyb. gut microbes in the urinary tractc. bacteriocin-secreting e. coli in the gutd. methanogens in the gut that cause other microbes to
Increased amount of clostridioides difficile in the gut caused by antibiotic therapy is not an example of dysbiosis.
Dysbiosis is regularly described as an “imbalance” withinside the intestine microbial network this is related to disease. This imbalance can be because of the advantage or lack of network contributors or adjustments in relative abundance of microbes.The accelerated quantities of intracellular pathogenic micro organism reasons an imbalance withinside the intestine microbiota, this dysbiosis then can result in persistent inflammation, which will increase the threat of growing illnesses including IBD and may end up a carcinogenic environment.
Thus, the correct option is a.
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Which statement is true about the DNA molecule during transcription?
Answer: D. Only a small area is open. Please pick brainliest.
Explanation:
Select all that apply
Secreted antibody molecules ______.
circulate freely in the lymph
circulate freely in the tissue fluids
are trapped in tissues
circulate freely in the blood
Answer: circulate freely in the lymph
circulate freely in the tissue fluids
circulate freely in the blood
Secreted antibody molecules:
Circulate freely in the lymph Circulate freely in the tissue fluids Circulate freely in the blood. About antibodyAntibody is a glycoprotein with a specific structure secreted from absorbent B-lymphocytes which have been activated to become plasma cells,as a response to certain antigen and reactive to that antigen.
The human immunity system is determined by the ability of the body to produce antibodies against antigens. Antibodies can be found in the blood or glands of the body of other vertebrates, and are used by the immune system to identify and neutralize foreign bodies such as bacteria and viruses. Antibody molecules circulate in the blood vessels and enter the body's tissues by going through a round of inflammation. They are made of little basic structures called chains. Each antibody has two heavy chains and two light chains.
There are several different types of antibody heavy chains, and several different types of antibodies, which are assigned to different classes (en:isotypes) based on each heavy chain. Five different isotypes of antibodies are known to exist in the mammalian body and play different roles and help direct the appropriate immune response for each different type of foreign body that enters the body,namely: IgG, IgM, IgA, IgD and IgE, which have a difference in area C.
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Which choice is utilized by eukaryotes to control their gene expression that is not used in bacteria?.
Eukaryotes, unlike bacteria, use control of chromatin remodeling and RNA splicing to regulate their gene expression.
How do eukaryotes regulate the expression of their genes?Both transcriptional activators and repressors control how genes are expressed in eukaryotic cells. Eukaryotic repressors function similarly to their prokaryotic counterparts in that they bind to specific DNA sequences and suppress transcription.
What method does eukaryotes, but not prokaryotes, primarily use to regulate gene expression?Transcription has a major role in regulating prokaryotic gene expression. Epigenetics, transcription, post-transcription, translation, and post-translation are all involved in the regulation of eukaryotic gene expression.
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suppose a researcher conducts an anova analysis that compares three different treatments for depression: medication, cognitive behavioral therapy, and a control condition. the p-value for the f statistic is .04. which of the following statements is true?
c. At least one pair of treatment conditions has different means. The ANOVA test is used as the first stage in examining the variables that influence a certain data set.
After the test is complete, an analyst runs additional tests on the procedural treatment elements that measurably contribute to the inconsistent nature of the data set. In order to produce more data that is consistent with the suggested regression models, the analyst uses the ANOVA test findings in an f-test.
Using the ANOVA test, you can compare more than two groups at once to see if there is a correlation between them. The F statistic, or F-ratio, which is the outcome of the ANOVA formula enables the examination of several groups of data to ascertain the variability within and across samples. The F-ratio result of the ANOVA will be relatively close to 1 if there is no discernible difference between the tested groups, which is known as the null hypothesis. The F-distribution is the distribution of each and every value that the F statistic could take. In reality, this is a collection of distribution functions, and the numerator degrees of freedom and denominator degrees of freedom are its two distinguishing characteristics.
The complete question is:
Suppose a researcher conducts an ANOVA analysis that compares three different treatments for depression: medication, cognitive behavioral therapy, and a control condition. The p-value for the F statistic is .04. Which of the following statements is true?
Select one:
a. All three pairs of groups have different means, within sampling error
b. All three groups have identical means
c. At least one pair of treatment conditions has different means
d. At least two of the three pairs of treatment conditions have different means
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The cycle of events that initiates gonadarche involves signals from the hypothalamus to the pituitary gland, which secretes hormones that in turn stimulate production of hormones in the __________________.
GONADS
The testes in men and the ovaries in women are the gonads, which are the primary reproductive organs. Sperm and ova are produced by these organs, which are termed endocrine glands since they exude hormones.
A mixed gland that creates both an organism's gametes and sex hormones is known as a gonad, sex gland, or reproductive gland. Male and female reproductive cells are called sperm and egg, respectively. Sperm are created by the male gonad, or testicle, in the form of spermatozoa. Egg cells are made in the ovary of the female gonad. These haploid gametes are both present. An ovotestis is a particular kind of gonad seen in several hermaphrodite mammals.
In certain lower invertebrate taxa, the gonads are transitory organs, whereas in higher forms, they are permanent. One invertebrate, such as an oligochaete worm or a leech, can have both male and female gonads. Sponges lack distinct gonads; instead, amoebocyte clusters in the body wall give rise to reproductive cells. The gonads of echinoderms, such as starfish, are typically hanging from the radiating arms directly into the water.
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write a sentence that compares the reactants and products of photosynthesis with the reactants and products of cellular respiration
Answer:
The reactants of photosynthesis are carbon dioxide and water, which are the products of cellular respiration.
during an excitatory postsynaptic potential (epsp), the postsynaptic membrane would most likely become more permeable to which of the following:
The membrane becomes more permeable to Na+ during an excitatory postsynaptic potential (EPSP). The correct option to this question is A.
When sodium channels open in response to a stimulus, an excitatory postsynaptic potential (EPSP) takes place. As a result of the electrochemical gradient, sodium floods the cell. The membrane potential of the cell increases or depolarizes, when sodium introduces its positive charge into the cell.
Synaptic inputs called excitatory postsynaptic potentials (EPSPs) depolarize the postsynaptic cell, bringing the membrane potential closer to the action potential threshold.
This makes the EPSP more likely to result in an action potential from the postsynaptic neuron, designating this synapse as excitatory.
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Complete question:
During an excitatory postsynaptic potential (EPSP), the postsynaptic membrane would most likely become more permeable to which of the following:
a) Na+.
b) K+.
c) Norepinephrine
d) Cl-.
e) Acetylcholine
by causing host cell to polymerize at one end of the bacterial cell, certain bacteria can propel themselves from the interior of one cell directly into the interior of an adjacent cell, allowing them to avoid extracellular immune response mechanisms.
By causing host cell actin to polymerize at one end of the bacterial cell, certain bacteria can propel themselves from the interior of one cell directly into the interior of an adjacent cell, allowing them to avoid extracellular immune response mechanisms.
The filaments bring together from actin monomers with a sure ATP. After polymerization, actin swiftly hydrolyzes the sure ATP and slowly dissociates the γ-phosphate. ADP-actin filaments then disassemble to recycle the subunits of low ionic energy, actin filaments depolymerize to monomers.
Actin then polymerizes spontaneously if the ionic energy is expanded to physiological levels. The first step in actin polymerization (referred to as nucleation) is the formation of a small combination inclusive of 3 actin monomers.
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Which best describes inserting a table using the Table Gallery?
A The user can click on Insert Table.
B There are many options on how to include a table.
C The user can make a quick selection of the number of rows and columns present.
D The user can click to use an Excel spreadsheet.
If dermal papillae were missing, then __________.
a. friction ridges would be absent
b. excess water loss would occur
c. keratin could not be produced in the skin
d. sebum secretion would be absent
Two hockey players are skating on a frozen pond. One skater falls through the ice into the water.
Explain how negative feedback can keep the skater who fell in alive. Explain how positive
feedback can provide physical assistance to the friend trying to save him.
The answers include the following below:
Negative feedback can keep the skater who fell in alive by the low temperature being regulated by an increase.Positive feedback can provide physical assistance to the friend trying to save him by the release of adrenaline to initiate fight/flight response.What is Feedback?This is defined as a response within a system that influences the continued productivity of that system and there are two types which are positive and negative feedback.
In this scenario, positive feedback can provide physical assistance to the friend trying to save him by the release of adrenaline which is a type of hormone responsible to initiate fight/flight response.
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Tatuo Aida investigated the genetic basis of color variation in the Medaka (Aplocheilus latipes), a small fish found in Japan (Aida, 1921). Aida found that genes at two loci (B, b and R, r) determine the color of the fish. Specifically, fish with a dominant allele at both loci (B_R_) are brown, fish with a dominant allele at the B locus only (B_ rr) are blue, fish with a dominant allele at the R locus only (bb R_) are red, and fish with recessive alleles at both loci (bb rr) are white. What results would you expect if you crossed a homozygous red fish with a homozygous blue fish and then backcrossed the Fi with a homozygous red parental fish? The Fı generation is BB RR OB_R Bb Rr The F2 generation is Brown Red genotypes Bb Rr bb Rr Answer Bank Bb RR bb RR BB RR Bb RT bb Rr BB Rr Incorrect
Backcross offspring received recessive alleles b and r. The alleles received from the other parent thus determine their phenotype:
Brown fish are referred to as Bb Rr, blue fish as Bb rr, red fish as bb Rr, and white fish as bb rr.
b. We anticipate a 1:1:1:1 phenotype ratio.
We cannot reject the hypothesis because df = 4 - 1 = 3; 0.9 p 0.975.
c. A homozygous red fish is bb RR crossed to b and r. All descendants would be bb Rr, or red fish.
d. Red fish bb RR homozygous + blue fish BB rr homozygous
F1 will be all brown because Bb Rr was backcrossed to Bb RR (homozygous red parent)
Backcross progeny will be distributed equally. Bb Rr (brown); Bb Rr (brown).
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if a bacterium regenerates from an endospore that did not possess any of the plasmids that were contained in its original parent cell, the regenerated bacterium will probably also . a. lack a cell wall b. lack a chromosome c. lack antibiotic-resistant genes d. lack water in its cytoplasm
The bacterium regenerates from an endospore that lacks the plasmid contained in the original parent cell, the regenerating bacterium will probably also a.) lack a cell wall.
What is an endospore?Endospores are bacterial cells that have undergone differentiation to become more resistant to heat, harmful chemicals, radiation, and other conditions that can kill ordinary bacterial cells.
The function of the endospore in bacterial cells is as a survival structure (dormant structure). This thick-walled structure allows bacteria to survive unfavorable conditions.
For example, when environmental conditions change to be inappropriate and extreme (drought, very low or very high temperatures) or lack of nutrients.
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