Which of the following represents a virus family name?
A. Hepatitis B virus
B. Herpesviridae
C. Enterovirus
D. Herpes simplex virus
E. Picornavirus
Answer: B
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Why might it be easier to determine the bacterium that caused pneumonia than one that caused a wound infection?
A. There are very few microorganisms that can cause pneumonia, while there are many that can cause wound infections. B. Bacteria that cause pneumonia can be identified with few tests. Many bacteria are normally found on the skin and may be in the wound complicationg indentification of the pathogen. C. We have much better tests for bacteria in the lungs than we do in wounds. D. The techniques of 16S rRNA sequencing are easier to perform on a sample taken from the lungs than a sample taken from a wound.
Suppose two living plant cells are in contact with each other so that water, but not solutes, can pass between them. The
cells have the same water potential. One cell has ?P ? 0.3 MPa and ?S = ?0.5 MPa, while the other cell has ?S = ?0.3 MPa. What is the ?P of the second cell?
a. ?P = ?0.8 MPa b. ?P = 0 MPa c. ?P = 0.5 MPa d. ?P = 0.8 MPa e. ?P = 0.1 MPa
Chloroplasts arose by endosymbiosis of a(an)?
A. aerobic archaeon. B. aerobic bacterium. C. anaerobic bacterium. D. photosynthetic bacterium. F. photosynthetic archaeon.
Robert Paine conducted studies of rocky intertidal communities on the coast of Washington and in the Gulf of California. Paine showed that removal of __________ consumers could result in reduction of the number of their resource species.
A) predator B) herbivore C) both predator and herbivore