Red blood cells are a part of the immune system

a. true
b. false


Answer: b. false

Biology & Microbiology

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Which of the following statements is not true? a. The size of the average family has been increasing in the United States since 1950

b. The size of the average family dwelling in the United States has been increasing since 1950. c. Larger homes require more resources and energy to build and maintain. d. The lifestyle of people in industrialized nations affects biodiversity.

Biology & Microbiology

Stretch-sensitive muscle spindles are indicated

by a. A. b. B. c. C. d. D. e. none of these

Biology & Microbiology

Nonsteroid hormones are ________ acting than steroid hormones because they activate molecules that are already present in the target cell in an inactive form

Fill in the blank(s) with correct word

Biology & Microbiology

The practice of breeding plants and animals for desirable traits, such as high crop yield, is called natural selection

Indicate whether the statement is true or false

Biology & Microbiology