Which one of the following is not a component of a phospholipid?
A. a three-carbon backbone such as glycerol
B. a phosphate group
C. two fatty acid tails
D. a core of four fused carbon rings
E. three-carbon backbone such as glycerol, a phosphate group, two fatty acid tails and a core of four fused carbon rings are all components of phospholipids.
Answer: D
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The energy of activation of a reaction is:
A. the net change in free energy. B. the difference in energy between substrate and product. C. the energy input needed to reach the transition state. D. the difference in energy between the transition state and the product. E. equivalent to the G of ATP hydrolysis.
Most animals rely on ____ digestion, in which food is isolated and broken down in a body compartment rather than inside individual cells
Fill in the blank with the appropriate word.
A phenomenon known as ________ [two words] occurs under conditions where a selection pressure works against deleterious mutations, resulting in the corresponding decrease in the frequency of a closely linked neutral mutation
Fill in the blank(s) with correct word
What is the composition of peptidoglycan?
a. amino acids b. monomeric sugar compounds c. N-acetylglucosamine and N-acetylmuramic acid d. N-acetylglucosamine, N-acetylmuramic acid, and a few amino acids