Galactose is absent, but you find active transcription of the GAL genes. Which protein is likely mutated or absent to allow for constitutive transcription of the GAL genes?
A) Gal2
B) Mig1
C) Gal4
D) Gal10
E) Gal80
E
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Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the assembly of
microtubules. Speculate how this drug works to inhibit cancer cell growth.
a. Vinblastine inhibits transition from G1 to S. b. Vinblastine inhibits transition from S to G2. c. Vinblastine inhibits cytokinesis. d. Vinblastine disrupts mitotic spindle formation and consequently mitosis. e. Vinblastine inhibits cyclin production.
Darwin's inference that individuals within a population compete for limited resources was based on
which observation(s)?
a. Most organisms produce more than one or two offspring. b. Populations do not increase in size indefinitely. c. Food and other resources are limited for most populations. d. Most organisms produce more than one or two offspring and populations do not increase in size indefinitely. e. Most organisms produce more than one or two offspring, populations do not increase in size indefinitely, and food and other resources are limited for most populations.
While looking at a prepared slide of human blood under your microscope, you spot a dark colored cell with a large nucleus. What is that cell most likely to be?
a. red blood cell b. granzyme c. lymphocyte d. platelet
Multicelled, absorptive structures called __________
are on each fold of the small intestines. Fill in the blank(s) with the appropriate word(s).