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Quiz Lecture Questions (2-4)1. Which of the following bonds rely on attracting positive and negative charges?
- Ionic bonds and hydrogen bonds
2. Which of the following accurately describes a polar covalent bond?
- The unequal sharing of electrons between an atom with a partial positive charge,
and an atom with a partial negative charge.
3. Which of the following best describes the ability of atoms to attract electrons?
- Electronegativity
4. Some insects are able to walk across liquid water because of the _____ of water due to its
_____
- Surface tension / Cohesion
5. What is a polar bond due to?
- Uneven sharing of electrons in a covalent bond.
6. DNA is a double helix structure where the sugar-phosphate backbones wrap around the
outside of the helix and the bases point inward
- True
7. If hydrogen bonds between water molecules were, collectively, not as strong as they are,
how would this affect plant height?
- As hydrogen bonds are responsible for the movement of water through plant
vasculature, plants would be shorter
8. What deoxyribonucleic acid (DNA) is used for?
- Transmission and storage of information
9. What does the central dogma of molecular biology state?
- That information flows from DNA to RNA to protein.
10. The translation is the process by which:
- Ribosomes synthesize protein from information in an RNA molecule
11. Which of the following correctly describes the complementary base pairing of adenine in
both DNA and RNA?
- Adenine pairs with thymine in DNA and with uracil in RNA
12. Imagine you have discovered a new species of bacteria. To begin your investigation of
this organism, you run an assay on the total nucleotide content of the bacterial DNA. If
the cytosine content of DNA from the bacterial cells is 40%, what is the adenine content?
- 10%
13. Choose the option on the right that best matches the statement on the left.
The type of bond that is formed when the
carboxyl group of one amino acid reacts with Peptide bond
of the amino group of the adjacent amino acid
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