The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney.
a. true
b. false
Ans: a. true
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The process by which glands release enzymes to aid in digestion is ____
a. motility b. secretion c. digestion d. absorption e. elimination
A gene that affects, prevents, or masks the expression of a gene at another locus is a(n) __________
gene. a. recessive b. dominant c. epistatic d. codominant e. plieotropic
Lactic-acid bacteria are used for:a
producing vaccines. b. producing sauerkraut. c. removing gasoline or oil. d. converting cornstarch to dextrins. e. breaking down toxic chemicals
Prokaryotes reproduce rapidly and this allows genetic variation to spread quickly through a population. Two processes can create new variations in prokaryotic populations. Select the choice with those two processes.
A. phage viral attack and genetic recombination B. genetic recombination and rapid cell division C. mutation and phage viral attack D. genetic recombination and nondisjunction E. genetic recombination and mutation