Which cellular protein is found in tight junctions?

A) occludins
B) tubulin
C) connexons
D) cadherins
E) dynein


Ans: A) occludins

Biology & Microbiology

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Which of the following would be considered components of the complement system? Select all correct choices

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Meiosis _____ the parental chromosome number

a. doubles b. halves c. maintains d. mixes up

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If cells from a wing are transplanted to the leg prior to their determination, into what will they likely develop?

A. A mixture of wing and leg cells B. Undifferentiated cells C. Wing cells D. Cannot be determined E. Leg cells

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Which of the following groups include organisms that are a key source of food in all aquatic environments and whose fossilized forms are used as a filter and as a grinding and polishing agent?

A) diatoms B) brown algae C) amoebas D) dinoflagellates

Biology & Microbiology