Receptors for foreign molecules that are made of protein and shaped like the letter "Y" are called ________
a. antigens
b. antibodies
c. MHC markers
d. cytokines
b
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When muscle cells are stimulated at such rapid rates that there is no relaxation between contractions, a greater force is produced. This property of muscle contraction is called:
A. hyperpolarization. B. summation C. tetanus D. agonist
Data from the Human Genome Project revealed that humans, considered among the most complex of all organisms, have fewer genes and less DNA than some "simpler" organisms. Explain how a species can be more complex than another even though it possesses fewer genes
What will be an ideal response?
The Calvin cycle is sometimes referred to as the C3 pathway because it generates a single three-carbon molecule for
every three turns of the cycle.
a. True b. False
Distinguish between exocrine and endocrine glands
What will be an ideal response?