What is the exchange of gases between the atmosphere and the blood through the alveoli called?
a) external respiration
b) internal respiration
c) inhalation
d) cellular respiration
Answer: a) external respiration
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The integrase enzyme is responsible for inserting bacteriophage ? into the host genome
Indicate whether the statement is true or false
The perianth of a flower consists of
A. the pistil and stamens. B. the petals and sepals. C. the pedicel and receptacle. D. the anthers and stigma. E. the style and ovary.
The chemical linkages that exert an attractive force over the greatest distance are ____
a. polar covalent bonds b. van der Waals forces c. ionic bonds d. hydrogen bonds e. nonpolar covalent bonds
Which of the following are environmental factors that determine where an organism can live? (Check all that apply.)
_____ intraspecific competition _____ predation _____ prey availability _____ soil type _____ sunlight _____ temperature _____ water