__________ are cells that synthesize bone, whereas
__________ break bone down. Fill in the blank(s) with the appropriate word(s).
Answer: Osteoblasts; osteoclasts
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The two macronutrients necessary for the production of ATP are
a. calcium and iron. b. calcium and phosphorus. c. phosphorus and nitrogen. d. phosphorus and potassium
A population’s ____ is the specific environment in which it lives
a. growth rate b. geographical range c. size d. habitat e. dynamics
Drugs like AZT, ddC, or ddI work against the AIDS virus because they
A) destroy viral proteins. B) look like hairpins to cause premature termination of viral mRNA. C) look like tRNAs and block viral translation. D) look like nitrogenous bases and block viral reverse transcriptase. E) prevent the virus from releasing its genome into the cytoplasm.
What is the term that describes the study of the relationship between living things and components of their environment?
a. zoology b. ecology c. herpetology d. analogy e. ichnology