Which skin disorder is caused by a type of herpes virus?
a. acne
b. vitiligo
c. cold sores
d. malignant melanoma
e. squamous cell carcinoma
ANSWER: c
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Why is it believed that life cannot evolve on a planet that orbits a spectral type A, B, or O star?
a. These stars produce too much infrared radiation which would destroy carbon-based organisms. b. These stars have very small life zones. c. These stars are not capable of producing planets. d. These stars do not remain on the main sequence long enough for life to evolve. e. These stars take too long to form.
In some cases, when an insect begins feeding on a leaf the plant responds by activating a signaling
pathway that results in the production of ____, which disrupt an insect's capacity to digest proteins.
a. gibberellins b. lipases c. chitinases d. protease inhibitors e. cytokinins
Explain how a telomerase inhibitor might be an effective cancer treatment. What will be an ideal response?
What is the basis for fossil fuels?
A) carbon-rich remains of plants and microorganisms B) underground deposits of carbon dioxide C) accumulations of partially decomposed dinosaurs D) timber from old-growth forests