_____ vertebrae are found in the lower back

1.Cervical
2.Thoracic
3.Lumbar
4.Sacral


3

Biology & Microbiology

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Which of the following are purine nitrogenous bases?

A) cytosine and guanine B) guanine and adenine C) adenine and thymine D) thymine and uracil E) uracil and cytosine

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Generally, movements are accomplished by:

a. a single muscle exerting a pulling force only. b. a single muscle exerting a pushing force only. c. groups of muscles opposing the actions of one another. d. groups of muscles collectively exerting pulling forces only. e. groups of muscles collectively exerting pushing forces only.

Biology & Microbiology

When measuring the age of a fossil using Carbon dating, what ratio is considered?

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The optimum condition for an enzyme

is 60°C. is where it works best. cannot be determined. room temperature. All of these answers are true.

Biology & Microbiology