Which type of molecule contains -NH2 groups?

A) Lipids
B) Carbohydrates
C) Proteins
D) Nucleic acids
E)None of the above


C) Proteins

Biology & Microbiology

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Microparasites are usually transmitted directly from one host to another

Indicate whether the statement is true or false

Biology & Microbiology

The maximum amount of air a person can exhale is called:

a. vital capacity. b. tidal volume. c. tidal capacity d. residual capacity. e. residual volume

Biology & Microbiology

The interrelationships between the endocrine and the nervous systems are especially apparent in a _____

A) steroid-producing cell in the adrenal cortex B) neurosecretory cell in the hypothalamus C) brain cell in the cerebral cortex D) cell in the pancreas that produces digestive enzymes

Biology & Microbiology

When populations become geographically separated for a period and then come back into contact, they __________ become different species.

a) always b) sometimes c) never

Biology & Microbiology