Seventy percent alcohol is effective against
A) enveloped viruses.
B) nonenveloped viruses.
C) bacterial endospores.
D) protozoan cysts.
E) prions.
A
Bloom's Taxonomy: Comprehension
Section: Chemical Methods of Microbial Control
Learning Outcome: 9.21
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Which of the following is the term for a ball of undifferentiated cells that results from repeated mitosis of a fertilized ovum?
A. cleavage B. blastula C. gastrula D. endoderm
The larger the intitial population size, the less likely it will become extinct during an environmental change.
a. true b. false
Photorespiration _____
A) generates carbon dioxide and consumes ATP and oxygen B) generates ATP and sugars and consumes oxygen and carbon dioxide C) generates oxygen and consumes ATP, carbon dioxide, and sugars D) consumes carbon dioxide and generates ATP, sugars, and oxygen
The initial Davson-Danielli model of membrane proposed that the plasma membrane was composed of ______.
a) a lipid bilayer with a layer of globular proteins between the two leaflets of the bilayer b) a single layer of phospholipids coated on each side by a later of globular proteins c) a lipid bilayer lined on both its inner and outer surface by a layer of globular proteins d) a bilayer of globular proteins lined on its inner and outer surfaces by a layer of phospholipids