List the two principal types of cells of the immune system, and describe their functions.

What will be an ideal response?


The two principal types of immune system cells are macrophages and lymphocytes. Macrophages engulf and digest invading microorganisms and clean up wound debris. Lymphocytes make antibodies or attack body cells infected with viruses.

Biology & Microbiology

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Collecting data without a specific hypothesis in mind is called ______.

A. reductionism B. hypothesis testing C. discovery-based science D. theoretical E. All of these choices are correct

Biology & Microbiology

What do you know about electron configuration? How does it relate to the question?

What will be an ideal response?

Biology & Microbiology

An allopolyploid is ____

a. a polyploid that arose from hybridization b. a species that arose parapatrically c. an allopatrically arising species d. a polyploid arising from a single diploid individual e. any sympatrically arising species

Biology & Microbiology

The ____ is a system of vesicles that wraps around each A band and I band and stores ions that are

used in muscle contractions.

a. neuromuscular junction b. Golgi apparatus c. endolemma d. microvillus e. sarcoplasmic reticulum

Biology & Microbiology