Which of the following terms best describes the cell in Figure 4.2?
a. Peritrichous flagella
b. Amphitrichous flagella
c. Lophotrichous flagella
d. Monotrichous flagella
e. Axial filament
Ans: c. Lophotrichous flagella
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Which RNA acts as an enzyme?
a. mRNA b. rRNA c. tRNA d. mRNA and rRNA e. rRNA and tRNA
Contractions of the dome-shaped __________ and the intercostal muscles between the ribs alter the volume of the
thoracic cavity during breathing. Fill in the blank(s) with the appropriate word(s).
The probit model assumes what sort of distribution for the unobservables?
A. T-distribution B. Standard normal distribution C. Logistic distribution D. The probit distribution
When patient tissues are transfected with viruses carrying a needed, normal human gene, the technique is called
A. antisense therapeutic. B. DNA fingerprinting. C. gene therapy. D. cloning.