The nucleolus is the site where _______ is/are assembled.
a. nuclear pores
b. ribosomal subunits
c. chromatin
d. the nuclear matrix
Ans: b. ribosomal subunits
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Trichomoniasis is the primary nonviral sexually transmitted disease worldwide. One complication of this infection is:
a. keratitis. b. endometritis. c. meningitis. d. appendicitis.
Refer to the figure. At the beginning of the experiment,
A) side A is hypertonic to side B. B) side A is hypotonic to side B. C) side A is isotonic to side B. D) side A is hypertonic to side B with respect to glucose. E) side A is hypotonic to side B with respect to NaCl.
The part of a membrane protein that extends through the phospholipid bilayer is primarily composed of amino acids that are
A. highly polar. B. negatively charged. C. non-polar. D. positively charged. E. water soluble.
Bees are a colonial species and live in hives with thousands of other bees. Which of the following is an example of commensalism?
a. a bee hive located in an attic space b. a bee hive in the trunk of a tree c. a bee hive built in the ground d. a bee hive in a wall e. a bee hive in a garage