A prion is a(n)
a) abnormally folded protein.
b) protein subunit.
c) form of a bacterium.
d) viral particle.
Ans: a) abnormally folded protein.
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Sister chromatids connect at the _____
Fill in the blank(s) with correct word
Which term denotes the conditions, resources, and interactions necessary for survival and reproduction of a species?
a. habitat b. niche c. carrying capacity d. community e. ecosystem
Bateson and Punnett crossed two white-flowered lines and saw all purple flowers in the F1 generation. They concluded this was an example of complementary gene interactions because a cross of the F1 plants yielded what ratio in the F2 generation?
A) 8 purple to 8 white B) 16 purple to 0 white C) 0 white to 16 purple D) 7 purple to 9 white E) 9 purple to 7 white
Endospores
A) are bacterial reproductive structures. B) may be produced when nutrients are scarce. C) are produced by bacteria, algae, and fungi. D) are resistant to everything except radiation. E) can last for only about 10 years.