14. The beta sheet resulting from hydrogen bonding interactions between peptide
ID: 1019300 • Letter: 1
Question
14. The beta sheet resulting from hydrogen bonding interactions between peptide groups is described as __________ protein structure.
A. primary B. secondary C. tertiary D. quaternary
15. Which of the following is not a main function of proteins in the human body?
A. make antibodies for our immune system B. transport oxygen through the blood C. stop radioactive decay of C-14 D. store iron in the liver
16. Which organic base is found only in RNA?
A. thymine B. adenine C. uracil D. guanine
18. One important feature of the DNA double helix is that the two strands run _________ to one another.
A. perpendicular B. identical C. parallel D. antiparallel
19. What is the complementary strand of DNA to the following sequence? 5’ A-C-T-C-G-G-T-A-A 3’
A. 3’ A-C-T-C-G-G-T-A-A 5’
B. 5’ A-C-T-C-G-G-T-A-A 3’
C. 3’ T-G-A-G-C-C-A-T-T 5’
D. 5’ T-G-A-G-C-C-A-T-T 3’
20. A ______ is a segment of DNA that carries a single, specific command, for example, “make a globin molecule”.
A. helix B. gene C. nucleotide D. base
Explanation / Answer
14. The beta sheet resulting from hydrogen bonding interactions between peptide groups is described as secondary protein structure.
A. primary
B. secondary ---answer
C. tertiary
D. quaternary
-sheet :
It is a typical theme of general auxiliary structure in proteins.
They comprise of beta strands associated along the side by no less than a few spine hydrogen bonds, shaping a for the most part bent, creased sheet.
It is a stretch of polypeptide bind normally 3 to 10 amino acids .
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15. Which of the following is not a main function of proteins in the human body?
A. make antibodies for our immune system
B. transport oxygen through the blood
C. stop radioactive decay of C-1---answer
4 D. store iron in the liver
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16. Which organic base is found only in RNA?
A. thymine
B. adenine
C. uracil--------------answer
D. guanine
they are nitrogen bases
nitrogen bases like A(adenine),T (thymine), G (guanine), Cytosine -------PRESENT IN DNA .
nitrogen base uracil -absent in DNA
nitrogen base uracil --PRESENT in RNA
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18. One important feature of the DNA double helix is that the two strands run _________ to one another.
D. antiparallel--------------answer
1,The two strands of twofold stranded DNA atom, run antiparallel to each other.
2. one strand runs 5 to 3 and the other 3 to 5.
In a twofold stranded DNA atom, the two strands run antiparallel to each other with the goal that one strand runs 5 to 3 and the other 3 to 5.
Adenine pairs with Thymine by two hydrogen bonds
And
Guanine pairs with Cytosine by three hydrogen bonds
Original strand reads---- 5 to 3 sequence.
complementary strand reads---- 3 to 5 sequence.
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19. What is the complementary strand of DNA to the following sequence? 5’ A-C-T-C-G-G-T-A-A 3’
3 T-G-A-G-C-C-A-T-T 5---answer
Adenine pairs with Thymine by two hydrogen bonds
And
Guanine pairs with Cytosine by three hydrogen bonds
Original strand reads---- 5 to 3 sequence.
complementary strand reads---- 3 to 5 sequence.
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20. A gene is a segment of DNA that carries a single, specific command, for example, “make a globin molecule”.
A. helix
B. gene---answer
C. nucleotide
D. base
gene :
It is a locus of DNA which is comprised of nucleotides and is the atomic unit of heredity
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