When an enveloped virus adsorbs to the host cell with its protein spikes, the virions are taken into the cell by the process of
A. penetration.
B. production.
C. fusion.
D. endocytosis.
D
Biology & Microbiology
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The blood vessels surrounding the loop of Henle are collectively called the ____ and are arranged in a countercurrent organization, just like the loop of Henle itself
Fill in the blank with the appropriate word.
Biology & Microbiology
In a mammal that you are studying, blood sodium levels are decreasing sharply. To correct this problem, which hormone might you try to administer?
A. cortisol B. aldosterone C. estrogen D. antidiuretic hormone E. testosterone
Biology & Microbiology
Is the phenotype of an organism controlled by its genotype?
a. Yes b. No
Biology & Microbiology
The smallest unit that can evolve is a(n) __________.
a. population b. species c. genotype d. individual e. family
Biology & Microbiology