The site on an antibody that is specifically tailored to fit a specific antigen is called the
A) constant segment.
B) variable segment.
C) hapten.
D) heavy chain.
E) bond.
Answer: B
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Which of the following is INCORRECT about erection?
A. Veins that exit the penis are compressed. B. cGMP is produced that causes artery walls to relax. C. Arteries entering the penis constrict. D. Autonomic nerves release nitric oxide.
The term cellular (metabolic) energy indicates any biological process requiring
A) thermal energy and chemical energy. B) ATP. C) chemical energy. D) thermal energy. E) energy in any form.
The coccyx is
A. also called the hipbone. B. the most inferior portion of the vertebral column. C. located in the upper lumbar region. D. absent in humans. E. the bottom of the spinal cord.
What can a deficiency of growth hormone during bone formation cause?
A) inadequate calcification of bone B) decreased osteoclast activity C) decreased proliferation of the epiphyseal plate cartilage D) increased osteoclast activity