Often point mutations can cause a protein to be made that differs in just one amino acid. Which of the following changes is most likely to cause the greatest change in protein function?
A) a mutation that replaces a valine with an isoleucine
B) a mutation that replaces a proline with an aspartic acid
C) a mutation that replaces a glutamic acid with an aspartic acid
D) a mutation that replaces a serine with a cysteine
E) a mutation that replaces an asparagine with a glutamine
Answer: B
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What type of cross is performed to determine the genotype of an individual?
A) A testcross B) A dihybrid cross C) A monohybrid cross D) A genotyping cross E) A controlled cross
__________cells function when dead
A. Parenchyma B. Sclerenchyma C. Collenchyma D. Phloem
Cardiac muscle cells need to generate significant amounts of ATP to allow for constant contractile activity. As a result, they primarily depend upon beta-oxidation of fatty acids, which has a higher energy yield than the catabolism of glucose. What would be the ATP yield for beta-oxidation of a hypothetical 10-carbon fatty acid?
A. 62 ATP B. 32 ATP C. 65 ATP D. 50 ATP E. 35 ATP
Why was the classification scheme devised by Linnaeus such an improvement over those used in his day?
What will be an ideal response?