Dietary choices that can increase the risk of certain cancers include ________
A) high-fiber diets B) diets high in saturated fats
C) diets low in cured foods D) diets high in antioxidants
Answer: B
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What is the difference between pollination and fertilization in flowering plants?
A) Fertilization precedes pollination. B) Pollen is formed within megasporangia so that male and female gametes are near each other. C) Pollination is the transfer of pollen from an anther to a stigma. Fertilization is the fusion of haploid nuclei. D) If fertilization occurs, pollination is unnecessary.
Which of the following is a phototroph?
A) a tree B) a mushroom C) bacteria growing on decomposing matter D) an earthworm E) a person
A male has a genetic disease coded for on his Y chromosome. This disease has been seen in his family in past generations. Which parent passed on this trait?
A) the mom B) the dad C) either the mom or dad D) neither parent — it is a spontaneous mutation
Which of the following pairs of microbe classification terms and optimal growth temperatures is mismatched?
A) psychrotroph — growth at 0°C B) thermophile — growth at 37°C C) mesophile — growth at 25°C D) psychrophile — growth at 15°C E) hyperthermophiles — growth at 85°C