Each “word” in the mRNA language consists of how
many letters?
a. 3
b. 4
c. 5
d. more than 5
e. all of these
Answer: a
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Answer the following statements true (T) or false (F)
1. Epstein-Barr virus is associated with several types of cancer. 2. Some cases of genital herpes are caused by the same virus that causes cold sores. 3. Smallpox virus, monkeypox virus, and chickenpox virus are all considered to be pox viruses. 4. Epstein-Barr virus is a type of herpes virus. 5. Genital warts can become malignant.
The major disadvantage of using stem cells derived from human embryos was:
a. they did not differentiate. b. they were difficult to maintain in culture. c. they did not function in humans other than those that they were obtained from. d. they could not be frozen. e. they did not contain fully active telomerase.
What do bryophytes lack that make them less likely to have formed fossils?
a. Chlorophyll b. Lignin c. Deep roots d. Special cells that conduct fluids
By definition, a nerve is
1.a bundle of axons. 2.a single extension of a neuron. 3.the same as a neuron within the central nervous system. 4.a dendrite. 5.a fiber more than 10 inches in length.