Which of the following statements is true regarding fungal spores? Select all correct choices
A. They can be formed via asexual
reproduction.
B. They can be formed via sexual
reproduction.
C. They are shaped to resist drag (like an
airplane wing).
D. They are shaped to promote drag (like a
parachute).
E. They can be dispersed by fruiting bodies.
A,B,C,E
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The effects of mutation in human somatic cells have a low probability of causing harm because only _______ of human DNA encodes gene products.
A. greater than 5 percent B. less than 2 percent C. less than 4 percent D. greater than 8 percent E. greater than 3 percent
What makes a mineral element essential for plant growth?
A. As its concentration increases, the plant grows more. B. It can only be found in organic fertilizers. C. If it is missing, the plant cannot grow or reproduce normally. D. It contributes to the solute potential of the plant. E. It is part of typical chemical fertilizers.
One summer, bird watchers and zookeepers in a major city notice that more birds than usual are dying. At the same time reports of human encephalitis cases increase sharply. The cerebrospinal fluid of human patients is clear. Similar enveloped RNA virus
particles are detected in samples from both birds and humans. Which of the following might be responsible for this outbreak? A) an arbovirus B) coxsackie A virus C) Cryptococcus neoformans D) Neisseria meningitidis E) rabies virus
Flagella on opposite ends of the cell is known as...
a. amphitrichous b. ambidextrous c. boutatrichous d. peritrichous