All of the following will strengthen a theory

EXCEPT
a. repetitions of experiments.
b. increased observations.
c. time.
d. faith.
e. confirmation by many scientists.


Answer: d

Biology & Microbiology

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Evolution at the genomic level involves changes in

A. chromosome structure and number. B. sequences of amino acids in proteins. C. sequences of nucleotides in RNA molecules. D. incorporation of new organelles such as the mitochondrion. E. DNA and histone relationships.

Biology & Microbiology

The major disadvantage of using stem cells derived from human embryos was:

a. they did not differentiate. b. they were difficult to maintain in culture. c. they did not function in humans other than those that they were obtained from. d. they could not be frozen. e. they did not contain fully active telomerase.

Biology & Microbiology

Which of the following would NOT be included in the reaction chamber of an experiment intended to

duplicate the atmosphere of ancient earth? a. carbon dioxide b. hydrogen gas c. carbon monoxide d. water vapor e. nitrogen gas

Biology & Microbiology

Where in Figure 9-3 is NADPH formed?



a. F
b. 4
c. 3
d. 2
e. B

Biology & Microbiology