The digestion of starches begins in which structure of the digestive tract?
a. esophagus
b. large intestine
c. mouth
d. small intestine
e. stomach
C
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Molybdenum is required for the nitrogenase enzyme. Based on this, what plants that you learned about are likely to need the most molybdenum in their soil?
A. Pitcher plants B. Corn C. Legumes D. Arabidopsis
The tissue type that provides communication among cells is called
A. epithelial. B. connective. C. nervous. D. muscle. E. All of the answer choices are correct.
Why is eating carrots thought to be useful for enhancing vision?
A. High levels of NADPH in carrots can allow vertebrate eyes to perform the light reactions. B. High levels of carotenoids in carrots can allow vertebrate eyes to perform the dark reactions. C. High levels of chlorophyll in carrots helps with photosynthesis in the eyes. D. High levels of beta-carotene can lead to the production of a pigment used in vision.
A group of organisms of the same species living together in the same geographic area is called a(n) _____.
A. aggregate B. group C. colony D. population E. cluster