In the Northern Hemisphere, the shortwave radiation is highest during the
A) March equinox.
B) September equinox.
C) June solstice.
D) December solstice.
C
Biology & Microbiology
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An IgG molecule has two
A. heavy chains. B. light chains. C. antibody binding sites. D. antigen binding sites. E. heavy chains, light chains AND antigen binding sites.
Biology & Microbiology
Water enters the spongocoel through the osculum
Indicate whether the statement is true or false
Biology & Microbiology
Four of the following maintain genetic equilibrium and allele frequencies. Which one is the exception?
a. lack of gene flow b. large population interbreeding freely c. differential survival and reproduction d. random mating e. absence of mutations
Biology & Microbiology
Which is a type of lymphocyte that forms in the bone marrow but matures in the thymus gland?
A) lymphoma B) T cell C) B cell D) none of the above
Biology & Microbiology