Where does most absorption in the human body take place?
a. in the liver
b. in the stomach
c. in the small intestine
d. in the large intestine
Answer: c. in the small intestine
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To understand the role of zinc in plant growth and development, you grow a tomato plant using hydroponics. Which plant organs do you expect to have developmental defects if you provide the plant with a solution devoid of zinc?
A) leaf development only B) stem development only C) above ground development only D) below ground development only E) All organs will be affected.
In humans, body size, muscle mass, and patterns of fat distribution are types of ____ sex characteristics
a. primary b. secondary c. tertiary d. initial e. mutable
Global warming due to the greenhouse effect may be
A) moderated by photosynthesis, which removes carbon dioxide from the atmosphere. B) made worse by photosynthesis, which adds carbon dioxide to the atmosphere. C) reduced by the burning of fossil fuels, which removes oxygen from the atmosphere. D) of little concern, since it is part of the normal cycle for the planet.
Which of the following is not a part of an atom?
A) electron B) molecule C) neutron D) proton