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.
Answer: D
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Chargaff found several facts about the base composition of DNA. One of these rules is
a. There is a 1:1 relationship between G and T. b. There is a 2:1 relationship between purines and pyrimidines. c. The amount of A equals the amount of T. d. The amount of purines is half the amount of pyrimidines. e. None of these are true.
Which cells mature in the thymus gland?
a. T cells b. mast cells c. macrophages d. neutrophils e. eosinophils
Which new technology has advanced our understanding of large scale ocean features such as ocean currents?
A) Marine labs B) ROVs C) AUVs D) Remote sensing
Infection by all influenza strains can be prevented with vaccines
Indicate whether the statement is true or false