Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 7TYU
Why are proteins not considered to be a good candidate for the firstliving molecule?
a. Their catalytic capability is not sufficient for most biological reactions.
b. Their amino acid monomers were not likely present in the prebioticsoup.
c. They cannot serve as a template for replication.
d. They could not have
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If Avery, MacLeod, and McCarty had found that samples of heat-killed bacteria treated with RNase and DNase transformed bacteria, but that samples treated with protease did not, what conclusion would they have drawn?
a. Protease carries out transformation.
b. RNA and DNA are the genetic materials.
c. Protein is the genetic material.
d. RNase and DNAse are necessary for transformation
. How does the double helix structure of DNA support itsrole in encoding the genome?a. The sugar-phosphate backbone provides a templatefor DNA replication.b. tRNA pairing with the template strand createsproteins encoded by the genome.c. Complementary base pairing creates a very stablestructure.d. Complementary base pairing allows for easyediting of both strands of DNA.
In the context of chemical evolution, DNA's structure is interesting because it suggests a possible copying mechanism. What about DNA's structure facilitates copying?
A.
The strands of the double helix are complementary.
B.
DNA always goes from 5' to 3'.
C.
It has the same number of purines and pyrimidines.
D.
The nitrogenous bases are located on the inside of the double helix.
Chapter 3 Solutions
Biological Science (6th Edition)
Ch. 3 - 1. What two functional groups are bound to the...Ch. 3 - 2. What type of bond is directly involved in the...Ch. 3 - What type of information is used to direct...Ch. 3 - 4. What is an active site?
a. the location in an...Ch. 3 - Prob. 5TYUCh. 3 - Prob. 6TYUCh. 3 - 7. Why are proteins not considered to be a good...Ch. 3 - Prob. 8TYUCh. 3 - Prob. 9TYPSSCh. 3 - 10. Make a concept map (see BioSkills 12) that...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is the major role of DNA polymerase in the DNA replication? a. Attached RNA primers to initiate the addition of complementary nucleotide sequence at the 5’ to 3’direction b. Adds up new complementary nucleotide sequence at the 3’ to 5’ direction of the DNA template. c. Unwinds the double helix by breaking the bonds at the 3’ to 5’ polymerization activity. d.It transiently cuts each strand to prevent supercoil at the 5’ to 3’ polymerization activity complementary to the RNA strandarrow_forwardIn the dideoxy-sequencing reaction, what terminates DNA synthesis at a particular base? a. The absence of a base on the ddNTP halts the DNA polymerase. b. The ddNTP causes a break in the sugar–phosphate backbone. c. DNA polymerase will not incorporate a ddNTP into the growing DNA strand. d. The absence of a 3′-OH group on the ddNTP prevents the addition of another nucleotide.arrow_forwardThe nucleotides from a bacterial cell were found to have the following abundances: 39% uracil; 41% adenine, 9% cytosine; 8% guanine. What type of molecule is the genome of the bacteria likely made of? a. Double stranded DNA b. Single stranded DNA c. Messenger RNA d. Double stranded RNAarrow_forward
- Refer to Figure 2 and compare this with the DNA model in Figure 1. a. In what ways are they similar? b. In what ways are they different? c. What is the biological significance of such differences? Why is the DNA referred to as the genetic material?arrow_forwardWhich of the following describes sequencing by synthesis? A. Large sections of DNA are inserted into a plasmid. B. DNA sequence is recorded as the complementary strand is built. C. Many copies of the DNA are made, each terminating at a specific nucleotide. D. A DNA strand is forced through a pore and its sequence synthesized as it passes through.arrow_forwardUse the following information to answer the next question In the early part of the last century , biologists thought that proteins might be the camers of genetic information. It is now known that DNA is the genetic molecule in living organisms and that RNA cames genetic information in some viruses. Proteins are not suitable to be the genetic molecules within cells because they A.) are large organic compounds B.) are composed of building blocks called amino acids C.) do not replicate themselves D.) catalyze biochemical reactionsarrow_forward
- The molecule DNA is important to biological systems because a. it can be replicated. b. it encodes the information for making a new individual. c. it forms a complex, double-helical structure. d. nucleotides form genes.arrow_forwardWhat is the correct chronological order of the initiation of DNA replication? A. Hydrogen bonds between complementary base pairs are broken at origin of replication B. Primase binds to the site of origin. C. DNA polymerase binds to the template strand. D. An RNA primer is synthesized. E. Incoming deoxynucleoside triphosphates are added to the growing strand.arrow_forwardWhat is DNA polymerase? A. An enzyme that corrects mutations that arise during the replication of DNA B. An enzyme that seals any gaps that remain between bases of replicating strands of DNA C. Short, single strand of DNA that base-pairs with a specific DNA sequence D. An enzyme that carries out DNA replicationarrow_forward
- Explain why scientists preferred proteins as the source of genetic material over DNA. A. DNA seemed too simple of a molecule compared to proteins B. Proteins are made up of combinations of 20 different amino acids compared to DNA's 4 bases. The larger number seemed more likely to account for all the variety and diversity in organisms. C. Scientists knew more about proteins than they did DNA. D. All of the answers are correct explanations.arrow_forwardRefer to the figure to answer these questions:a. Add labels for mRNA (including the 5′ and 3′ ends) and tRNA. Inaddition, draw in the RNA polymerase enzyme and the ribosomes,including arrows indicating the direction of movement for each.b. What are the next three amino acids to be added to polypeptide b?c. Fill in the nucleotides in the mRNA complementary to thetemplate DNA strand.d. What is the sequence of the DNA complementary to the templatestrand (as much as can be determined from the figure)?e. Does this figure show the entire polypeptide that this geneencodes? How can you tell?f. What might happen to polypeptide b after its release from theribosome?g. Does this figure depict a prokaryotic or a eukaryotic cell? How canyou tell?arrow_forwardWhy is DNA replication considered semiconservative? A. Both strands of each replicating DNA molecules are conserved. B. One molecule consists of the old strands and the other DNA molecule is entirely new. C. One strand of each replicating DNA molecule is conserved and the other strand is newly synthesized. D. Both strands of each replicating DNA molecule are new.arrow_forward
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