Which of the following statements concerning tetanus is FALSE?
A) Its only source is from deep puncture wounds from rusty nails.
B) Its toxin causes simultaneous contraction of both muscles in an antagonistic pair.
C) It is a small, motile, obligate anaerobe.
D) It produces a terminal endospore that gives the cell a distinctive "lollipop" appearance.
E) Its diagnostic feature is characteristic muscle contractions, which are often noted too late to save the patient.
A
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Banner-tailed kangaroo rats, Dipodomys spectabilis, are rodents endemic to (found only in) the deserts of the southwestern United States. Which of the following is the best description of their niche?
A. seed-eating rodents that compete with other seed-eating organisms for food B. found in parts of Arizona, New Mexico, Texas, and Mexico C. found primarily in Sonoran and Chihuahuan deserts D. found only in arid habitats E. found primarily in areas with relatively heavy soils
Atlantic cod have evolved to mature at a younger age and smaller size due to ____
a. DNA damage from radiation released accidentally from nuclear power plants b. unknown causes c. food competition from other predatory fish d. intraspecies competition e. overexploitation by fishermen
Living things inherit information from their parents encoded in:
A) atoms. B) DNA. C) proteins. D) fats.
The kidneys help to maintain blood pressure by monitoring the pH of the blood.
Answer the following statement true (T) or false (F)