The total number of deaths in a population due to a disease is the ________ rate.
A. mortality
B. endemic
C. pandemic
D. incidence
E. morbidity
Answer: A
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Because filtration removes rather than destroys microorganisms, it does not truly sterilize the materials passing through the filter.
Answer the following statement true (T) or false (F)
A phosphodiester bond is formed between:
A. a fatty acid and a glycerol molecule. B. two amino acids. C. a base and a sugar. D. a 3' phosphate and a 5' hydroxyl group. E. a 5' phosphate and a 3' hydroxyl group.
What sequence of events leads to the perception of a visual scene?
I. In response to light, retinal dissociates from rod and cone photopigments, hyperpolarizing the photoreceptor cells and leading to activation of bipolar neurons. II. Action potentials are propagated through ganglion cells, whose axons project to the occipital lobe of the brain. III. In response to light, rod and cone photoreceptors depolarize, causing increased release of neurotransmitter and activation of bipolar neurons. A. I then III B. III then II C. III then I then II D. I then II then III E. I then II
When two alleles of the same gene are
different, the individual carrying those alleles is said to be
a. recessive. b. heterozygous. c. phenotypic. d. somatic. e. homozygous