Question 31Which of the following scenarios accurately describes the actions occurring during the S phase?O The chromosome number is halved in preparation for cell division.O The cell enlarges, proteins are increased and organelles are duplicated.O Cell reaches maximum size and adds more proteins.O Each chromosome is duplicated; each chromosome results in two sister chromatids attached at a centromere.Question 32Which of the following strucțures is present in a prokaryotic cell?O mitochondrionO chloroplastO nuclear envelopeO ribosome

Cell cycle has different stages called G1, S, G2, and M. In each phase cell does different work by…

Answered: Which of the following scenarios…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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QUESTION 26 In a double-stranded DNA molecule, how are the sequences of each strand related to each other? A The sequences are identical. B The sequences are identical except that one strand has a U where the other strand has a T. C The sequences are the reverse compliment of each other and use the nucleotides, A, G, U, and C only. D The sequences are the reverse complement of each other.
QUESTION 16 Match the definitions and key words with the group name (programmed or stochastic). From the drop down boxes, choose the correct letter (A -- Programmed or B -- Stochastic). Celluar Aging: suggesting that the lifespan of a species is determined by an internal cellular "clock" that limits the number of cell divisions. Immune System: suggesting that aging is due to a break-down in the body's natural defense system against bacteria, viruses, and other substances. Error Theory: suggesting that errors at the cellular level produce "faulty" molecules. Evolutionary theory: suggesting that aging is a natural way to limit the reproductive potential and timespan of members of a species. Wear and Tear: suggesting that like a battery or a machine, the human…
Question #2 To isolate DNA from cells, you must disrupt the cell Therefore, you treated your cells with a lysis buffer that contains a detergent. You also heated the cells and vortexed them during this time. What chemical property does the detergent in the lysis buffer have that helps disrupt a cell membrane? Briefly explain your answer. How does vortexing and heating your samples aid in disrupting the membrane?
Question 21>In 1668, Francesco Redi performed a series of experiments on spontaneous generation. He began by putting similar pieces of meat into eight identical jars. Four jars were left open to the air, and four were sealed. He then did the same experiment with one variation: Instead of sealing four of the jars completely, he covered them with gauze (the gauze excluded the flies while allowing the meat to be exposed to air). In both experiments, he monitored the jars and recorded whether or not maggots (young flies) appeared in the meat.What hypothesis was being tested in the initial experiment with open versus sealed jars?A.The type of meat used affects the likelihood of spontaneous generation.B.Spontaneous generation can occur only if meat is exposed to air.C.Spontaneous generation is more likely during the long days of summer.D.Maggots do not arise spontaneously, but from eggs laid by adult flies.
QUESTION 19 A transgenic mouse was produced which lacks a protein that is required to assemble tight junctions in the epithelial cells of the skin. What is the most likely medical condition that these animals would have? A Water loss by uncontrolled evaporation from the skin B Reduced ability to heal from a wound C Increased wound size in response to an abrasion D Blistering of the skin due to lack of connection of the epithelium with the basement membrane
QUESTION 27 Which of the following methods can be used to compare the amounts of one specific mRNA that is expressed by two different cell lines? A. Immunohistochemistry B. Western blotting C. Polymerase chain reaction (PCR) D. Immunocytochemistry
Question 16: One of the two genes known to be mutated in cases of Hypokalemic periodic paralysis (which is inherited in an autosomal dominant pattern but known to affect males more often than females) is the calcium voltage-gated channel subunit alpha1 S (CACNA1S). What is known about the gene is recorded here: https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000081248;r=1:201039512-201112451 Please navigate to the link above and use the information and link-outs from the page to answer the following question. GIVE YOUR ANSWER AS A NUMBER ONLY, NO UNITS: What is the size in amino acid residues of the CACNA1S transcript named CACNA1S-202?
Question 14 One of the two genes known to be mutated in cases of Hypokalemic periodic paralysis (which is inherited in an autosomal dominant pattern but known to affect males more often than females) is the calcium voltage-gated channel subunit alpha1 S (CACNA1S). What is known about the gene is recorded here: https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000081248;r=1:201039512-201112451 Please navigate to the link above. Use the left-hand menu to view the sequence for CACNA1S, and answer the following question. ANSWER ONLY IN UPPERCASE LETTERS, NO UNITS. What are the last six nucleic acid bases of exon 1? Answer: The last six nucleic acid bases of CACNA1S, exon 1 are Blank ...
Question 13 One of the two genes known to be mutated in cases of Hypokalemic periodic paralysis (which is inherited in an autosomal dominant pattern but known to affect males more often than females) is the calcium voltage-gated channel subunit alpha1 S (CACNA1S). What is known about the gene is recorded here: https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000081248;r=1:201039512-201112451 Please navigate to the link above and use the information and link-outs from the page to answer the following question. GIVE YOUR ANSWER AS A NUMBER ONLY, NO UNITS: What is the size in amino acid residues of the CACNA1S transcript named CACNA1S-202? Answer: The size of the CACNA1S transcript named CACNA1S-202 is Blank ... amino acid residues.
QUESTION 8 What is the rate-limiting step in the assembly of both microtubules and actin microfilaments that occurs in cells but does not occur in a test tube when purified monomers in the tube together with the appropriate energy source? A Elongation B Nucleation C Treadmilling D Depolymerization E Association with binding proteins
Question:- 5. Describe Candida albicans. Where would you expect to find yeast? Describe a disease caused by it
Question 12 One of the two genes known to be mutated in cases of Hypokalemic periodic paralysis (which is inherited in an autosomal dominant pattern but known to affect males more often than females) is the calcium voltage-gated channel subunit alpha1 S (CACNA1S). What is known about the gene is recorded here: https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000081248;r=1:201039512-201112451 Please navigate to the link above and ensure that you click to reveal the transcript table. Then use the information in the table to answer the following question. PLEASE GIVE YOUR ANSWER AS A NUMBER ONLY, NO UNITS What is the size in base pairs of the CACNA1S transcript named CACNA1S-202? Answer: The size of the CACNA1S transcript named CACNA1S-202 is Blank ... base pairs.

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