Viruses can enter animal cells by
A. endocytosis.
B. exocytosis.
C. poking holes in their membranes and entering.
D. triggering an active transport mechanism.
Answer: A
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____ glands lack ducts
a. Endocrine b. Muscular c. Nervous d. Exocrine e. Connective
The maximum amount of air that can be taken into
the lungs in a single deep breath is the a. vital capacity. b. tidal volume. c. total lung capacity. d. alveolar volume. e. inspirational capacity.
Choose the letter of the best match from the following:A. cognitionB. waggle danceC. navigationD. filial imprintingE. fixed action patternInnate motor program.
Fill in the blank(s) with the appropriate word(s).
Please match the types of mutations with the statements that most accurately describe them, to test your understanding of their causes.
Induced mutation A) Random change in the DNA arising from errors in replication that occur without a known cause B) Result from exposure to known mutagens, which are primarily physical or chemical agents that damage DNA C) Changing of single base in the DNA code that may result in the placement of a different amino acid D) Addition or deletion of bases that changes the reading of mRNA codons