Pinocytosis and phagocytosis are accomplished in the cell by the ____
a. nucleus
b. lysosome
c. endoplasmic reticulum
d. plasma membrane
e. mitochondria
ANSWER: d
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The region within the prokaryotic cell where the DNA is located is known as the ________.
Fill in the blank(s) with the appropriate word(s).
How is the NO pathway manipulated by Viagra to treat erectile dysfunction?
a. NO synthesis is decreased b. NO synthesis is increased c. the enzyme catalyzed by NO is stabilized d. the enzyme catalyzed by NO is inhibited e. the breakdown of cGMP is inhibited
Integrins are glycoproteins that help link the cytoskeleton and the:
A. ribosomes. B. cytoplasm. C. cell wall. D. extracellular matrix.
Which of the following that their cell wall, if present, may contain chitin?
A. Prions B. Viruses/viroids C. Eukaryotes D. Prokaryotes E. Both, eukaryotes and prokaryotes