Bio 191 LEC 1st Exam Questions and Correct Answers
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Course
Bio 191
Institution
Bio 191
Mutations in what type of cell can be passed down to offspring?
~ Germ cells
You are a researcher studying the LMNOP gene in human cells. Upon analysis of
the cell, you find that this gene produced 3 different protein products from the same
DNA sequence. At which of the following time points ...
Identify which nucleotides bind together (Watson-Crick binding) and state hydrogen
bonds form between each pairing
✓✓~ A, T: 2 hydrogen bonds form between adenine (A) and thymine (T). These hydrogen bonds
help hold the two DNA strands together.
C, G: 3 hydrogen bonds form between cytosine (C) and guanine (G). This results in
a stronger bond compared to the A-T pair, which has two hydrogen bonds.
Explain how DNA becomes a polynucleotide chain.
✓✓~ DNA is made of four types of nucleotides, which are linked covalently into a polynucleotide
chain (a DNA strand) with a sugar-phosphate backbone from which the bases (A, C, G, and T)
extend.
Explain what the term complementary means in terms of DNA.
✓✓~ Complementary base pairing describes in which the nitrogenous bases of the DNA
molecules align with each other. Complementary base pairings are also responsible for the
double-helix structure of DNA.
Anti-parallel
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