Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the:  

A.  cytoplasm.
B.  nucleus.
C.  plasma membrane.
D.  cytoskeleton.


D.  cytoskeleton.

Biology & Microbiology

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Arthus reactions and serum sickness are examples of _________ hypersensitivity

A. type I B. type II C. type III D. type IV E. type V

Biology & Microbiology

Select the anaerobic pathway

a. aerobic respiration b. citric acid cycle c. electron transport chain d. fermentation e. chemiosmosis

Biology & Microbiology

While on an archaeology expedition, you unearth a skeleton with the following characteristics: four long, slender finger bones and a smaller opposable thumb bone, long arm bones, fingernails, and eye sockets close together on a skull

What type of organism do you suspect you may have found? A) an anthropoid B) a tarsier C) a crustacean D) a marsupial

Biology & Microbiology

Which of the following distinguish gnathostomes from other chordate lineages?

a. operculums b. jaws c. claspers d. bony scales

Biology & Microbiology