Which of the following is true about endospores?
A) Endospores are considered reproductive structures.
B) Endospores are only viable for a short time.
C) Endospores are highly resistant to environmental stress such as heat, drying, freezing, and radiation.
D) Endospores are susceptible to various chemicals.
E) Endospores are metabolically active structures.
Answer: C
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The complexity and variety of organic molecules is due to _____
A) the chemical versatility of carbon atoms B) the variety of rare elements in organic molecules C) the diverse bonding patterns of nitrogen D) their interaction with water E) their tremendously large sizes
What happens during diastole?
A. The heart muscles contract, moving blood to ventricules. B. The heart muscles pause, allowing both atria to empty. C. The heart muscles relax, allowing blood to flow into all chambers of the heart. D. The heart muscles contract, moving blood to atria.
Extinct glyptodont and living nine-banded armadillo were related according to Darwin. In what way are they related?
a. They were/are both living. b. They are both animals. c. Glyptodont is an ancestor and armadillo is a descendant. d. Glyptodont is a descendant and armadillo is an ancestor,
Maintaining individual quality of life at a high level will require, above all, that humans exhibit a reproductive restraint that defies the entire history of evolution, during which "fitness" has been measured in terms of reproductive success rather than quality of life.
a. true b. false