The smallest structural unit that exhibits the characteristics of living things is

A. an organ.
B. an individual.
C. a system.
D. a cell.
E. tissue.


Answer: D

Anatomy & Physiology

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A patient's anxiety caused her to develop respiratory alkalosis. The nurse instructs the patient to take some slow deep breaths. Explain why this would be effective.

What will be an ideal response?

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To keep horses from moving or kicking, people sometimes use a(n) _________________________________________, a type of restraint that ties all four feet in an "X" pattern

Fill in the blank(s) with correct word

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What percent of energy released from catabolism is lost as heat?

A: 60 B: 50 C: 20 D: 40 E: 30

Anatomy & Physiology

The T cells that limit the degree of immune system activation from a single stimulus are __________.

a. suppressor T cells b. memory Tc cells c. cytotoxic T cells d. CD4 T cells

Anatomy & Physiology