The pyrimidine bases are _______
A. cytosine, thymine, and uracil
B. adenine and guanine
C. adenine and thymine
D. cytosine and guanine
A
Biology & Microbiology
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B cells are genetically programmed to produce unique antibodies; similarly, T cells are genetically programmed to produce unique T-cell receptors
a. True b. False Indicate whether the statement is true or false
Biology & Microbiology
The neural tube will develop into the ________
a. brain and spinal cord b. vertebral column c. somites d. legs
Biology & Microbiology
Which of the following lies beneath the C horizon in soil?
a. bedrock b. O horizon c. soil base d. water table
Biology & Microbiology
Which of the following organisms is a multicelled
producer?
a. an oak tree b. Candida, a pathogenic fungus c. E. coli, a common intestinal bacterium d. a Siberian tiger e. more than one of these
Biology & Microbiology