Green sulfur bacteria are nonmotile but can control their depth by using gas vesicles to control buoyancy.

Answer the following statement true (T) or false (F)


True

Biology & Microbiology

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Antigens are

A. non-self proteins. B. proteins on the surface of B-cell membranes. C. proteins that consist of two light and two heavy chain polypeptide chains. D. proteins on the surface of macrophage membranes. E. proteins on the surface of T-cell membranes.

Biology & Microbiology

The number of currently described species on the planet is about ________.

a) 17,000 b) 150,000 c) 1.5 million d) 10 million

Biology & Microbiology

What is the net production of ATP in glycolysis?

a. Two ATP b. Four ATP c. Eight ATP d. Six ATP

Biology & Microbiology

As the ciliary muscle relaxes, the suspensory ligaments tighten and stretch the lens, allowing for distance vision

Answer the following statement(s) true (T) or false (F)

Biology & Microbiology