DNA: Question Preview (ID: 19825)

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1. For which of these is DNA ultimately responsible?
a) brown hair
b) an inherited disease
c) both A and B
d) neither A nor B

2. Which of these follows the principle of base pairing?
a) adenine-thymine
b) adenine-adenine
c) guanine-thymine
d) purine-purine

3. Which of the following best illustrates the sequence in the expression of blue eyes from a parent to offspring?
a) ribosome trait
b) trait ribosome
c) DNA trait
d) trait DNA

4. If a sequence on one DNA strand reads A-T-C-C-T-G-C-A, what will the complementary strand sequence read?
a) A-T-C-C-T-G-C-A
b) T-A-G-G-A-C-G-T
c) C-G-A-A-G-T-A-C
d) G-C-T-T-C-A-T-G

5. What forms the backbone of DNA?
a) a nucleotide
b) a sugar
c) both A and B
d) neither A nor B

6. Who were the co-discoverers of the double helix structures of DNA?
a) Mieure, Pegue and Watkins
b) Darwin and Lamark
c) Hooke and Watson
d) Crick and Watson

7. How are the four DNA bases typically abbreviated?
a) Ad, Ur, Cy, Gu
b) Ad, Th, Cy, Gu
c) A, U, C, G
d) A, T, C, G

8. Which of the following is NOT a component of DNA?
a) a sugar
b) a nitrogenous base
c) an amino acid
d) a phosphate group

9. Which of the following best describes the structure of a typical molecule of DNA?
a) helical
b) double-stranded helix
c) double-stranded
d) complementary

10. How much of the DNA is replicated during each DNA replication?
a) half (one of the two strands)
b) as much as is needed, depending on certain factors
c) all of the DNA
d) only small regions (genes) of the DNA

11. If hydrogen bonds connect complementary nitrogenous bases, then what type of bonds connect one strand of DNA to the other?
a) hydrogen
b) ionic
c) covalent
d) nitrogen

12. What is the genetic material that passes information from one generation to the next?
a) a ribosome
b) DNA
c) RNA
d) a nucleotide

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