Which of the following is a primary advantage of semisynthetic drugs?
A. They are less stable and consequently have fewer side effects.
B. They work faster.
C. They are more effective than the unmodified natural antibiotics.
D. They must be administered intravenously.
E. They are not readily absorbed.
Answer: C
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The egg of a fruit fly has 4 individual chromosomes. How many chromosomes are in a somatic cell of a fruit fly?
A) 4 B) 2 C) 8 D) 16
Select the incorrect statement related to sarcomere structure and function.
A. Two Z lines form the opposite borders of one sarcomere. B. Thin filaments are not present in the H band of a sarcomere. C. I bands consist of both thin and thick filaments. D. Stacks of thick filaments produce dark bands, called the A band. E. Sacromeres are the smallest subunits of muscle contraction.
Refer to the accompanying figure. Which structure is specialized to receive stimuli from other neurons and to send
signals to the cell body? a. 1 b. 4 c. 6 d. 7 e. 9
The sum of all the different kinds of limiting factors is
A. biological amplification. B. environmental resistance. C. biotic potential. D. symbiosis.