Substances that cannot be broken down into simpler substances are called ____________.
A. neutrons
B. elements
C. compounds
D. protons
Ans: B. elements
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When the solute concentration of solution A is lower than the solute concentration of solution B, solution A is considered
A. hypertonic. B. hypotonic. C. isotonic.
The frequency of recombination during meiosis is a function of:
A. the alleles on the genes; recombination happens less frequently among recessive alleles. B. the distance between genes: the closer the genes are, the more frequent the recombination between them. C. the distance between genes: the farther apart the genes are, the more frequent the recombination between them. D. whether or not the genes are sex-linked; X chromosomes recombine much more frequently than do autosomes. E. whether or not the genes are sex-linked; Y chromosomes recombine much more frequently than do the autosomes.
Which animal would you expect to have the most diverse olfactory receptors to enhance their sense of smell?
a. dog b. monkey c. human d. angelfish e. earthworm
Which of the following refers to the term metabolism?
A) all the reactions in a cell or organism B) all the reactions in a cell that break down molecules only C) all the reactions in a cell that build new molecules only D) all the reactions in a cell that decompose molecules only