The ________ is the site where lipids, triglycerides, and steroids are synthesized, as well as where calcium is stored within the cell.
A) lysosome
B) smooth endoplasmic reticulum
C) nucleolus
D) mitochondria
E) rough endoplasmic reticulum
Ans: B) smooth endoplasmic reticulum
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Archaea are resistant to damage by harsh conditions because their membrane lipids, unlike those of Bacteria and Eukaryota, have:
A. ether linkages B. proton pumps C. sulfhydryl linkages D. transferases E. cytoskeletons
Which of the following gives the correct rank order for relative toxicity (most to least) of the primary nitrogenous wastes used by different animals?
A. ammonia ? urea ? uric acid B. uric acid ? ammonia ? urea C. urea ? uric acid ? ammonia D. ammonia ? uric acid ? urea E. urea ? ammonia ? uric acid
If your mass is 70 kg on Earth, how much is your mass on the Moon?
a. less than 70 kg. b. more than 70 kg. c. 70 kg. d. none of the above.
RNA usually is ________ stranded
Fill in the blank(s) with correct word