The most common strain of HIV evolved from
_____ virus(es).
a. a monkey
b. a chimpanzee
c. a human
d. a gorilla
e. more than one of these animal’s
B
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Humans depend on other organisms to provide all of the following except:a
soil. b. declining biodiversity. c. pharmaceuticals. d. a balance in atmospheric CO2 and O2. e. recycling of nutrients.
Discuss the role of protists in both primary and secondary serial endosymbiosis. What will be an ideal response?
"Immediate early genes" such as myc can best be thought of as genes that
a) Are only expressed in the absence of growth factor (GF) stimulation b) Become permanently switched off during tumorigenesis c) Code for GF receptors such as RTKs d) Represent the first wave of expression following GF stimulation
Receptor Mediated endocytosis:
A. is involved in receptor recycling B. involves cell membrane fusion C. can involve the protein clatherin D. can induce a refractory period for signal transduction E. all of the above