The walled asci contain
a. eight diploid nuclei
b. eight haploid nuclei
c. many multinucleate conidia
d. an egg and a sperm
e. a zygote
Ans: b. eight haploid nuclei
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During cell crawling, the cell must attach to the substrate upon which it is crawling. One group of attachment proteins is the ________.
A) actins B) actomyosins C) creatines D) integrins E) titins
Your sister cut herself with a knife, and within a few days, she had a severe pus-producing infection of the hand. A day later, skin begins to come off, exposing muscle and other tissue below the skin. Predict what caused the severity of this infection.
A. The infectious agent is a fungus. B. This is not an infectious disease; it is an autoimmune disease. C. The infectious agent is likely a virus. D. The infectious agent produces exotoxins.
Which of the following stages of an infectious disease is the most severe?
A) the incubation period B) the prodromal period C) the illness period D) the decline period E) the convalescence period
A substance similar to table salt, called magnesium chloride, separates into positively charged magnesium ions and negatively charged chloride ions when placed in water. If you were to look at the magnesium ions dissolved in the water, what would you see?
A) The magnesium ions would be surrounded by chloride ions. B) The magnesium ions would be surrounded by water molecules with their hydrogen atoms facing the magnesium ions. C) The magnesium ions would be surrounded by water molecules with their oxygen atoms facing the magnesium ions. D) The magnesium ions would be drifting by themselves, without any water molecules nearby. E) The magnesium ions would be covalently bonded to water molecules.