What type of neuron is responsible for carrying electrical signals AWAY from the CNS to elicit a response in the body?
A. sensory neuron
B. motor neuron
C. interneuron
D. glial cell
E. All of these choices are correct.
B. motor neuron
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Why is it that RNA can catalyze reactions but DNA cannot?
A) The sugar of RNA is much more reactive than the sugar of DNA. B) The bases of RNA are much more reactive than the bases of DNA. C) The phosphate groups of RNA are much more reactive than the phosphate groups of DNA. D) The primary structure of RNA is fundamentally different than the primary structure of DNA.
Which organelle functions in the recapture of energy from organic compounds?
a. Golgi body b. mitochondria c. lysosome d. ribosome e. endoplasmic reticulum
The person known to history as "Typhoid Mary" never had typhoid fever but was identified by public health officials as a source of Salmonella enterica Typhi. Which of the following is the most accurate description of her in this scenario?
A) contact carrier B) human carrier C) reservoir D) both a human carrier and a reservoir E) a reservoir but not a carrier
Why is organ transplantation challenging?
A) Organs cannot be grown in the laboratory. B) T cells from the immune system attack transplanted tissue. C) Identical twins cannot donate organs to each other by law. D) To harvest a donor's organs, the donor needs to be dead for at least 24 hours.