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Question 1 Estimate the uracil content in turtle DNA if adenine is = 28.7% and cytosine = 21.3%. Answer a. 0% b. 21% c. 25% d. 29% e. 50% 1 points Question 2 Identify the carbohydrate present in DNA....

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Question 1
  1. Estimate the uracil content in turtle DNA if adenine is = 28.7% and cytosine = 21.3%.
Answer
a. 0%
b. 21%
c. 25%
d. 29%
e. 50%
1 points
Question 2
  1. Identify the carbohydrate present in DNA.
Answer
a. 2-Deoxyribose
b. 3-Deoxyribose
c. 4-Deoxyribose
d. 5-Deoxyribose
1 points
Question 3
  1. Which of the following structures is correct for adenine?


Answer
a. 1
b. 2
c. 3
d. 4
e. 5
1 points
Question 4
  1. Which of the following are purines?
A. Adenine
B. Cytosine
C. Guanine
D. Thymine Answer
a. A,B
b. A,C
c. A,D
d. B,C
e. B,D
1 points
Question 5
  1. The relationship between cysteine and cystine can be expressed as the equation below:
Which one of the following is cystine?


Answer
a. 1
b. 2
c. 3
d. 4
1 points
Question 6
  1. Which phrase correctly completes the statement? Exept for glycine, which is archiral, all of the amino acids present in proteins...
Answer
a. are chiral, but racemic
b. are meso forms
c. have the L configuration at their a carbon
d. have R configuration at their a carbon
e. have the S configuration at their a carbon
1 points
Question 7
  1. How many peptide bonds are there in a pentapeptide?
Answer
a. one
b. four
c. five
d. six
e. fifty
1 points
Question 8
  1. The major species present in a solution of glycine at a pH of 2 is:


Answer
a. 1
b. 2
c. 3
d. 4
1 points
Question 9
  1. Which phrase correctly describes a peptide bond?
Answer
a. an S-S bond in a peptide formed between two amino aciids that contain - SH groups.
b. an amide bond between the amino nitrogen of one a amino acid and the carboxyl carbon of another.
c. a hydrogen bond between the amino nitrogen of one a amino acid and the carboxyl carbon of another.
d. electrostatic attraction between zwitterions
e. van der Waals forces between two or more polypeptide chains.
1 points
Question 10
  1. Linus Pauling is credited with being the first to describe how polypeptide chains in protein molecules arrange themselves in helix patterns held together by hydrogen bonds. This so-called a helix (and also the "pleated sheet" or ß form) is what today we refer to as a protein's
Answer
a. primary structure
b. secondary structure
c. tertiary structure
d. quanternary
005_i9pk-vlgxvllc.docx
Answered Same Day Dec 21, 2021

Solution

David answered on Dec 21 2021
133 Votes
Solution to TTs031012_40575_17
Answers:
1. d
2. a.
3. e.5
4. b. A,C
5. c.3
6. c
7. b.
8. c.3
9. b
10. b
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