Multiple Choice
What tool or technique used by Ivanowski and Beijerinck while studying diseased tobacco plants enabled them to determine that the disease was caused by an agent significantly smaller than bacteria?
A) scanning electron microscopy that enabled them to view the virus the tobacco mosaic virus
B) transmission electron microscopy that allowed them to view the tobacco mosaic virus
C) porcelain filters that trapped bacteria but allowed passage of the virus
D) cell culture that enabled cultivation of the virus
Correct Answer:
Verified
Correct Answer:
Verified
Q15: Freshly isolated animal tissue that is placed
Q16: Which body system is mainly affected by
Q17: The virus-induced, specific damage to the host
Q18: T-even phages<br>A)include the poxviruses.<br>B)infect Escherichia coli cells.<br>C)enter
Q19: All of the following are characteristics of
Q21: The capsomers are made of<br>A)DNA.<br>B)RNA.<br>C)lipids.<br>D)protein.<br>E)carbohydrate.
Q22: Host range is limited by the<br>A)type of
Q23: The core of every virus particle always
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Q25: Viruses that consist of only a nucleocapsid