What is the white matter of the spinal cord composed of?
a. glial cell bodies
b. neuron cell bodies
c. myelinated axons
d. interneurons
c. myelinated axons
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In eukaryotes, specific transcription factors have two distinct domains:
A. a DNA-binding domain and a RNA-binding domain. B. a DNA-binding domain and an activation domain. C. a DNA-binding domain and a repressor domain. D. a DNA-binding domain and an enhancer domain. E. a DNA-binding domain and an operator domain.
Potatoes store starch. Which of the following tissues would you expect to be abundant in potatoes?
A. equal amounts of dermal and vascular tissue B. vascular tissue C. ground tissue D. equal amounts of dermal and ground tissue E. dermal tissue
The most selectively toxic drugs are those that
A. target microbial sites that are not present in humans, e.g., the bacterial cell wall. B. cause damage to host tissues. C. cause allergic reactions in humans. D. target structures present in both microbes and humans, thus causing host tissue damage.
Which of the following is NOT a characteristic of all animals?
A. Animals are multicellular eukaryotes. B. Animals digest their food internally. C. The adult form is diploid in an alternation of generation life cycle. D. Animals are heterotrophic by ingestion or absorption. E. Animals produce gametes by meiosis.