The primary thermostat of the body is located in the

a. heart.
b. hypothalamus.
c. medulla oblongata.
d. cerebellum.
e. thyroid gland.


Answer: b

Biology & Microbiology

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Males with one copy of an X-linked gene are said to be ________ for that gene.

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Which of the following statements about biofilms is true?

a. They are formed by prokaryotes living in a watery environment. b. They may develop on surgical implants. c. An example is dental plaque. d. They are formed by prokaryotes living in a watery environment and they may develop on surgical implants. e. They are formed by prokaryotes living in a watery environment, they may develop on surgical implants, and an example is dental plaque.

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Write the letter of the ecological level of organization that is the least complex and inclusive next to 1

Sequence the remaining levels of organization by increasing complexity.

A. ecosystem ecology B. organismal ecology C. community ecology D. population ecology 1. 2. 3. 4.

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In the tricarboxylic acid cycle, oxaloacetate reacts with acetyl CoA forming citrate

__________________ Indicate whether the statement is true or false.

Biology & Microbiology