The study of evolutionary relationships among organisms is called ________.
A. biotechnology
B. genetics
C. taxonomy
D. phylogeny
E. recombinant DNA
Answer: D
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The total solute concentration of a solution of water and other substances (salts, proteins, etc.) is referred to specifically as its
A. osmolarity. B. tonicity. C. salinity. D. specific gravity. E. density.
Helena’s doctor has advised her to take calcium supplements to help prevent:a
osteitis. b. osteoporosis. c. osteopenia. d. osteoarthritis
e. osteon disease.Enzymes needed to hydrolyze all types of macromolecules are found in ________.
A. centrioles B. Golgi apparatus C. mitochondria D. lysosomes
Photoautotrophs use __________.
a. light as an energy source and CO2 as a carbon source b. light as an energy source and methane as a carbon source c. N2 as an energy source and CO2 as a carbon source d. CO2 as both an energy source and a carbon source e. H2S as an energy source and CO2 as a carbon source