The right and left hemispheres of the cerebrum are connected by the:a
central sulcus.
b. corpus callosum.
c. substantia nigra.
d. central canal.
e. corpus striatum
b
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When chlorophyll absorbs light energy, ____
a. chlorophyll is converted to carotene b. the molecules begin to move more rapidly c. the plant becomes radioactive d. electrons jump to a higher energy level e. the molecules become ionized
Which of the following statements is false?
A) There are more than 60 different kinds of amino acids present in cells. B) The R group of amino acids differs from one amino acid to another. C) Only around 20 amino acids are used in protein synthesis. D) Equal amounts of D- and L-amino acids are found in cells. E) An amino acid has an N-terminus, a C-terminus, and an R group.
The spread of hepatitis D is preventable by the hepatitis D vaccine
Indicate whether the statement is true or false
A mutation changes the sequence of the Cas1 gene so that Cas1 protein is no longer produced. How will this affect bacterial immunity?
A. The bacteria not have adaptive immunity against any second infections. B. The bacteria will have no defense against the first infection with any bacteriophage. C. The bacteria will have normal defense against first and second infections with some bacteriophages, but will have no defense against others. D. The bacteria will have normal ability to defend itself against first and second infections with any bacteriophage.