Humans are classified as hominoids because
A) they have larger bodies and bigger brains than other primates.
B) all primates are classified in this group.
C) they have hair during some part of their lives.
D) at one point in their evolutionary history, they possessed a tail.
E) aerobic metabolism uses hemoglobin for oxygen transport.
A
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A positive pyrrolidonyl arylamidase (PYR) test was observed on a species of Enterococcus. What color should be observed for this reaction?
a. Purple b. Red c. Green d. Pink
Export of flagellin subunits is mediated by
A. the type I secretion pathway. B. an apparatus in the basal body of the flagellum that is related to the type II secretion pathway. C. an apparatus in the basal body of the flagellum that is related to the type III secretion pathway. D. None of the choices are correct.
In the Na+/K+ pump, _____ molecules of sodium are transported and ______ molecules of potassium are transported in each cycle
Fill in the blank(s) with the appropriate word(s).
Besides sending messages to and from the brain, the spinal cord has another important function: Reflexes. In fact, in very simple animals, that is the main function of the cord. In higher animals, reflexes are important because they provide
A. maintenance of life-sustaining processes such as breathing and heart beat, even while sleeping or unconscious. B. protection from sudden or unexpected environmental harms. C. objective physical evidence of neurological injury. D. stimulation of the brain as a protection against atrophy in situations where voluntary movement is hindered, such as a coma.