Which of the following is the protein coat on the outside of a virus?
a) mucine
b) capsule
c) pili
d) exosomes
e) capsid
Answer: b) capsule
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Why did local residents in the Pacific Northwest remain hostile to conservation efforts?
a. When the northern spotted owl was listed as endangered, logging workers lost jobs. b. The northern spotted owl has not been listed as endangered. c. When the northern spotted owl was listed as endangered, the logging industry experienced a boom. d. Conservation efforts to protect trees from logging have been unsuccessful. e. Conservation efforts focus on the local population and take their jobs into consideration.
Differences in intensity of a stimulus
a. affect the wave form of the transmitted excitation. b. are encoded by the number of neurons activated. c. control the part of the brain that receives the stimulus. d. are encoded by the frequency of action potentials in a single axon. e. are encoded by the number of neurons activated and by the frequency of action potentials in a single axon.
A microbiome is essential for human infant development. Where does an infant obtain the origins of its microbiome?
A) the father B) the mother C) the hospital D) the infant has a microbiome at conception
Which of the following statements about rhinoviruses is FALSE?
A. They are limited to infecting the upper respiratory tract. B. They are the only viruses that can cause a common cold. C. They are extremely infectious. D. They thrive at 33°C. E. Person-to-person contact is the most common mode of transmission.