What are the results of the release of cAMP from Dictyostelium discoideum?
A. The cells aggregate, forming a large motile multicellular slug that serves as a precursor to the development of a fruiting body.
B. The cells form cysts until the growing conditions improve.
C. The cells develop flagella.
D. The larger cells cannibalize the smaller, less developed cells.
Answer: A
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If a dimorphic fungus is causing a respiratory infection, which of the following might be seen in a sputum specimen from that patient?
A) amebae B) conidia C) hyphae D) yeasts
A(n) ________ organism is generally harmless in its normal host but can become pathogenic in a compromised host.
Fill in the blank(s) with the appropriate word(s).
Which of the following explains why the owl has its
head almost upside down? a. Photoreceptors are concentrated near the bottom of the eye. b. Photoreceptors are concentrated near the top of the eye. c. Loud music from a passing car caused damage to the sense of balance. d. It is trying to remove water from its ear after a hard rain. e. None of these are an accurate explanation.
________ occurs when allele frequencies within a population change randomly because of chance alone
Fill in the blank(s) with correct word