During a discussion about ecosystems, a student says, "Plants eat sunlight, and animals eat other organisms." Which response to the student's comment is most accurate?
A) Plants don't eat sunlight; they eat sugars that they get from the soil.
B) Plants don't eat sunlight; they use sunlight to make sugars.
C) Plants eat sunlight, but they also eat other organism such as decomposers.
D) Plants eat sunlight, but animals also eat bacteria, which are not considered organisms.
Answer: B
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Misfolding of polypeptides is a serious problem in cells. Which of the following diseases are associated with an accumulation of misfolded polypeptides?
A) Alzheimer's only B) Parkinson's only C) diabetes mellitus only D) Alzheimer's and Parkinson's only E) Alzheimer's, Parkinson's, and diabetes mellitus
Ovules mature into _________, while ovaries mature into _____________ .
(a) seeds/fruits. (b) stamens/seeds. (c) seeds/carpels. (d) fruits/seeds.
Which of the following is not an effect of deforestation?
1.destruction of forest organisms 2.higher risk of flooding 3.higher risk of landslides 4.increased productivity
If the heterozygous phenotype is intermediate between those of the two different homozygotes, this is called
a. epistasis. b. independent assortment. c. codominance. d. incomplete dominance. e. polygenic.