The number of new cases of a disease in a population over a specific period of time compared with the healthy population is the
A. mortality rate.
B. incidence rate.
C. epidemic rate.
D. prevalence rate.
E. morbidity rate.
Answer: B
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When a person visits the doctor with a bacterial infection, one of the first lab tests on the patient will tell the doctor whether the bacteria are gram-negative or gram-positive. Why is this important information for a doctor to have before deciding on treatment?
What will be an ideal response?
Long-distance electrical signaling in the phloem has been shown to elicit a change in all of the following except
A) rapid leaf movement. B) gene transcription. C) a switch from C4 to C3 photosynthesis. D) gene transcription. E) phloem unloading
In mammals, where in the kidney should you expect to find cells with the highest concentration of osmolytes, such as sorbitol?
a. in the Bowman's capsule b. in the renal cortex c. in the renal medulla d. in the renal pelvis
Which of the following statements is NOT true about alternation of generations life cycle?
a) Spores develop into the gametophyte generation. b) When the sperm fertilizes the egg, a zygote results that develops into the sporophyte. c) The gametophyte produces eggs and sperm. d) Meiosis produces spores that are haploid. e) The sporophyte generation produces spores by mitosis in structures called sporangia.