Treadmilling of actin filaments only occurs in a test tube.

a. true
b. false


Answer: b. false

Biology & Microbiology

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Answer the question using the accompanying figure. Of the fragments labeled A-D, which is closest to the negative

electrode?

a. A b. B c. C d. D e. they are all the same distance from the negative electrode

Biology & Microbiology

Typically, members of a cohort are tracked ____

a. until they become independent b. until their breeding age c. for a period of time and then released in the environment to serve their purpose in the community d. from birth to death e. as long as they are in good health and serve the purpose of a study

Biology & Microbiology

Which gammaproteobacteria are facultatively anaerobic, gram-negative rods that inhabit the intestinal tracts of humans and other animals?

a. Pseudomonadales b. Vibrionales c. Enterobacteriales d. Legionellales

Biology & Microbiology

Which of the following is a morula?

A) a hollow sphere of cells B) the group of cells that form the archenteron C) a tightly packed ball of early embryonic cells D) a fertilized egg

Biology & Microbiology