The autonomic nervous system
a. is part of the peripheral nervous system.
b. is part of the central nervous system.
c. relays commands to smooth muscles.
d. is under involuntary control.
e. is described by more than one of these
E
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IP3 receptors are associated with
A) plasma membranes. B) intracellular membranes. C) mitochondrial membranes. D) ER membranes. E) lysosomes.
Serratia marcescens bacteria has a gene that regulates red pigment production by cells. A student inoculates two nutrient agar plates of Serratia and incubates one at 25oC and the other at 37oC. Following incubation, the student observes that colonies on the 25oC plate are red while those on the 37oC plate are nonpigmented. Which of the following statements is a logical conclusion based on these results?
A. Serratia cells undergo a genotypic change that is proportional to changes in temperature. B. Serratia genes for pigment production are induced at certain temperatures. C. Low temperatures cause repression of certain housekeeping genes. D. This is an example of constitutive gene expression.
Fungus are considered to be ______________.
A. Autotrophs B. Heterotrophs
Bacteriophages transfer genetic material between one bacterium and another. This process is called:
A. Conjugation B. Transformation C. Mutation D. Transduction