What is the effect of rest on physical endurance?
a. rest improves endurance
b. there is no significant effect
c. rest decreases endurance
d. the effect varies with the type of exertion
Answer: a. rest improves endurance
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In the female, the __________ serves as a temporary endocrine gland and secretes __________
a. pituitary; luteinizing hormone and follicle-stimulating hormone b. ovaries; testosterone and luteinizing hormone c. endometrium; estrogens and follicle-stimulating hormone d. corpus luteum; progesterone and estrogens e. uterus; luteinizing hormone and follicle-stimulating hormone
Genetically modified papayas have been created to __________.
a. improve the nutritional value of the fruit b. increase resistance to disease c. improve the flavor of the fruit d. increase the amount of fruit
If the human malaria parasite Plasmodium falciparum were the product of co-speciation, its closest relative would be found in:
A. mosquitoes. B. gorillas. C. chimpanzees. D. orangutans. E. pocket gophers.
The zoo decides to keep all of Gus and Ida's descendants under zoo conditions for the next 30,000 years. They breed only with each other. You visit the zoo in 30,000 years and see their offspring
Do you expect their offspring, which are alive in 30,000 years, to be identical in genotype and phenotype to Gus and Ida? Keep in mind, polar bears start reproducing when they are between 5 and 10 years old, and adult females give birth to two cubs every 2-3 years. A. Yes, because evolution only occurs in nature. B. Yes, because they had a small population to begin with (only two bears), so there was little genetic variation to start. C. No, because mutation would occur occasionally and there are selective pressures that exist in artificial as well as natural environments. D. Maybeâ€"it depends on mutation rates and strength of selective pressures.