The use of bovine growth hormone (BGH) to increase milk yield in dairy cows is highly controversial. What other hormone is regularly added to milk, yet causes little controversy?
A. MSG
B. Vitamin A
C. Vitamin D
D. Preservatives
Answer: C
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In some species of birds, males with the brightest plumage have the fewest parasites
Indicate whether the statement is true or false
Genetics studies of human populations have revealed that
A) it is nearly impossible to determine the relatedness of human populations. B) Homo sapiens probably did not evolve from primates. C) humans have very little genetic variation compared to other mammals. D) all humans are virtually identical. E) human populations vary tremendously at the level of DNA sequences.
The conversion of CO2 and H2O into organic compounds using energy from light is called
A) glycolysis. B) photosynthesis. C) fermentation. D) cellular respiration.
Which organ is central to the body's metabolism of nutrients?
A) the kidneys B) the stomach C) the liver D) the small intestine