Why might Neanderthals have been more affected by changes in food sources than H. sapiens?
A. Neanderthals were primarily meat eaters.
B. Neanderthals had no ability to store food.
C. Neanderthals had no tools with which to process food.
D. Neanderthals could digest a limited number of proteins.
E. Neanderthals required a greater number of essential amino acids.
Answer: A
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The most fundamental and important molecule that distinguishes living systems from nonliving matter is ____
a. protein b. DNA c. fructose d. water e. glucose
Rubisco can add O2 to RuBP, which generates
a. two molecules of 3PGA. b. two molecules of phosphoglycolate. c. three molecules of 3PGA. d. one molecule of G3P. e. a molecule of 3PGA and a molecule of phosphoglycolate.
Encephalitis is most commonly caused by a ________.
A. bacterium B. protozoan C. helminth D. virus
Which of the following statements is true of bacterial plasmids?
A. They are always found in the nucleoid. B. They can replicate autonomously. C. They carry genes for essential metabolic functions. D. They are small circular DNA molecules. E. They are small circular DNA molecules that can replicate autonomously.