Which one of the following is not a way in which biology is typically approached?
A. biomechanics
B. physiology
C. zstrology
D. cognition
E. behavior
Answer: C
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Which neurotransmitter stimulates skeletal muscle contraction, slows cardiac muscle contraction rate, and affects
mood and memory?
a. acetylcholine b. epinephrine c. dopamine d. serotonin e. an endorphin
Which of the following is not a condition of genetic equilibrium?
1.Mutations are rare. 2.The population is isolated from all other populations of the species (no gene flow). 3.Mating is random. 4.All individuals survive and produce the same number of offspring.
Phil has chronic ulcers, he has been taking acid blockers and drinking vast amounts of liquid antacids. These help relieve the symptoms but he still suffers from ulcers. What would be the best course of action to treat the source of his ulcers?
A. Reducing the stress in his daily life B. Increasing the dosage of acid blockers C. Taking several different antacids D. Taking a course of antibiotics E. Changing his diet to include more fiber
Which of the following statements about RNA processing in eukaryotes is INCORRECT?
A. A 7-methylguanosine cap is added on to the 5?end of the mRNA. B. Modification occurs in the nucleus. C. The excision of introns from pre-mRNA is the only modification required to produce a mature mRNA. D. A poly A tail is added on to the 3? end of the mRNA. E. A protein/RNA complex is used to remove introns from the pre-mRNA.