Which of the following is not a way that ethical issues emerge in epidemiology?
A) new technologies or studies that provide more information or better insight
B) new threats or diseases
C) new laws are passed
D) more aware of old threats or diseases
E) more visible infections noticeable in the community
Answer: E
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Kinetochore microtubules assist in the process of splitting centromeres by _____
A) using motor proteins to split the centromere at specific arginine residues B) creating tension by pulling toward opposite poles C) sliding past each other like actin filaments D) phosphorylating the centromere, thereby changing its conformation
Which one of the following is an adaptation shared by virtually all complex multicellular organisms that allows the organisms to receive the oxygen and nutrients they need?
A. amplification of surface areas B. active transporters for oxygen and glucose C. restricted body size that corresponds to the environment D. tissues or organs that function as pumps
Archaea differ from Bacteria in all of the following EXCEPT
A. cell wall composition. B. plasma membrane make up. C. DNA replication. D. gene expression. E. the presence of a nucleoid region.
In the transport model shown below, what is the exchange rate of Na+ for K+?
a. They are traded evenly across the membrane.
b. Two Na+ are exchanged for every single K+.
c. Three Na+ are exchanged for each two K+.
d. This model is not transporting the ions at all.