Which of the following characteristics distinguishes coronaviruses from rhinoviruses?
A. replicate best at 33°C
B. transmitted via respiratory droplets
C. cause common colds
D. an envelope is present
E. virions contain single-stranded positive RNA
Answer: D
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Which of the following kinds of fungi is NOT a basidiomycete?
A. mushroom B. shelf fungus C. smuts D. morels E. puffballs
Referring to the illustration, what activates the cyclin/Cdk complex?
a. binding between them
b. target protein
c. kinase
d. cyclin/Cdk is not activated
What type(s) of shape can carbon molecules assume?
a. chains b. rings c. a combination of both chains and rings d. rings combined with each other, but not with chains
Most myxobacteria ________.
A. produce desiccation resistant dormant myxospores B. are micropredators because they secrete digestive enzymes that lyse bacteria and yeasts C. have the ability to aggregate and form a fruiting body under conditions of nutrient limitation D. All of the choices are correct.