Collectively, the majority of carbon stored in reservoirs is in the form of:
A. CO2.
B. C6H12O6.
C. H2CO3.
D. CaCO3.
E. CH4.
D
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In a study of tadpole coloration, you noticed that a certain percentage of tadpoles in a population displayed a decreased ability to shift from dark coloration at night to light coloration during the day
These individuals were studied and found to have the normal number of melanophores that produced normal amounts of melanin pigment granules. You remember reading about melanophores and pigment granule transport in cells and that it involved the cytoskeleton. Which part of the cytoskeleton would you suggest investigating as a potential source of the faulty color adjustment in these tadpoles? A. intermediate filaments B. microtubules C. microfilaments
Which organ system acts upon substances contained in the alimentary canal?
A) circulatory system B) digestive system C) integumentary system D) excretory system
This figure demonstrates a DNA repair mechanism. What property of DNA makes such repair possible in DNA but not RNA?
a. DNA uses deoxyribose instead of ribose. b. DNA uses thymine instead of uracil. c. DNA is a double helix. d. DNA is more reactive than RNA.
If the isotope 32S has 16 protons and 16 neutrons, how many protons, neutrons, and electrons will the isotope 35S have, respectively?
(a) 16, 20, 15 (b) 16, 19, 15 (c) 16, 19, 16 (d) 16, 19, 17