Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 11.2, Problem 1CS
Core Skill: Modeling The goal of this modeling challenge is to predict the hydrogen-bonding relationship between O6-MeG and cytosine.
Modeling Challenge: As discussed in Chapter 15, certain chemicals, such as nitrogen mustard and ethyl methanesulfonate, can modify the structures of DNA bases. For example, a methyl group (─CH3) can be attached to the oxygen atom on guanine, thereby creating 6-O-methylguanine (O6-MeG), as shown to the right. When O6-MeG is included in a DNA strand, it can form only two hydrogen bonds with cytosine instead of three. Draw a model for the base pairing between O6-MeG and cytosine.
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Practice HW
make a nucleotide sequence (Template strand and Coding strand) of at least 15 base pairs for each of these steps to show your understanding of how genetic information is stored and used within a cell make sure that there are start and stop positions and note the direction of the sequence--- 5’ to 3’ or 3’ to 5.
INSTRUCTION:
= IF BOTH STATEMENT ARE TRUE
= IF FIRST STATEMENT IS TRUE WHILE SECOND STATEMENT IS FALSE
= IF FIRST STATEMENT IS FALSE WHILE SECOND STATEMENT IS TRUE
= IF BOTH STATEMENTS ARE FALSE
STAMENT 1: If 3’ ATTG 5’ is transcribed, the complementary strands is 5’ UAAC 3’
STAMENT 2: Guanine and Cytosine are purine bases
ANSWER:
STAMENT 1: The general term for the enzyme that connects nucleotide triphosphates in DNA is DNA transferase
STAMENT 2: The enzyme that unwinds the double stranded DNA is topoisomerase
ANSWER:
STAMENT 1: The name of the compound formed when uracil is bonded to ribose is uradine
STAMENT 2: The piece of nucleic acid that is complementary to the DNA template and serves as a starting point of replication is called RNA promoter
ANSWER:
Please ASAP. Thank you.
Regarding the double helix of DNA, which of the following is true?
a.
Guanine pairs up with cytosine with three hydrogen bonds
b.
Complementary strands of DNA are held together by covalent bonds
c.
The backbone consists of ribose sugars H-bonded to phosphate groups
d.
Uracil pairs up with adenine with two hydrogen bonds
Chapter 11 Solutions
Biology
Ch. 11.1 - Prob. 1CSCh. 11.1 - Prob. 1EQCh. 11.1 - Prob. 2EQCh. 11.1 - CoreSKILL In the experiment of Avery, MacLeod,...Ch. 11.2 - Prob. 1CCCh. 11.2 - Prob. 2CCCh. 11.2 - Core Skill: Modeling The goal of this modeling...Ch. 11.2 - Prob. 2CSCh. 11.3 - If this experiment was conducted for four rounds...Ch. 11.4 - Molecular Mechanism of DNA Replication Concept...
Ch. 11.4 - Prob. 2CCCh. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Prob. 1CCCh. 11.5 - Prob. 1CSCh. 11 - Why did researchers initially believe that the...Ch. 11 - Prob. 2TYCh. 11 - Which of the following equations is accurate...Ch. 11 - Prob. 4TYCh. 11 - Which of the following statements about the...Ch. 11 - Meselson and Stahl were able to demonstrate...Ch. 11 - During replication of a DNA molecule, the daughter...Ch. 11 - Prob. 8TYCh. 11 - A nucleosome is a. a dark-staining body composed...Ch. 11 - The conversion of euchromatin into heterochromatin...Ch. 11 - What are the four key criteria that the genetic...Ch. 11 - A double-stranded DNA molecule contains 560...Ch. 11 - Prob. 3CQCh. 11 - Prob. 1COQCh. 11 - CoreSKILL How might you provide evidence that DNA...
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