Listeria monocytogenes shows which of the following characteristics?
A. It can grow at refrigerator temperatures (4C)
B. It is an extracellular pathogen
C. It is strictly a human pathogen
D. it is a gram-negative coccus
Ans: A. It can grow at refrigerator temperatures (4C)
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Which of the following factors does not affect membrane permeability?
a. temperature b. the amount of cholesterol in the membrane c. the polarity of membrane phospholipids d. the saturation of hydrocarbon tails in membrane phospholipids
The receptors in a sour taste bud bind _____ which block ______ channels. This depolarizes the membrane because __________
Fill in the blank(s) with the appropriate word(s).
A __________ is a type of __________ that exactly regenerates the original nucleotide sequence
a. second-site reversion; forward mutation b. second-site reversion; back mutation c. true reversion; forward mutation d. true reversion; back mutation e. substitution; point mutation
What type of inheritance pattern does Hemophilia A exhibit?
a. Autosomal recessive b. Autosomal dominant c. X-linked recessive