Breathing that stops briefly and then resumes spontaneously is called
a. apnea.
b. tachypnea.
c. bradypnea.
d. pneumotaxia.
e. hyperventilation.
A
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Antigens that elicit allergic reactions are called ________.
A. superantigens B. autoantigens C. heterophilic antigens D. allergens
Which of the following is a virus with an icosahedral head, a capsid that contains primarily three proteins, a connecting neck with a collar and long whiskers, a long tail and a complex base plate?
A. influenza virus B. tuberculosis C. measles virus D. HIV E. T4 bacteriophage
Noncompetitive inhibitors bind the active site of an enzyme, reducing its activity and the subsequent formation of product.
Answer the following statement true (T) or false (F)
You are doing field work on a small, uninhabited island. You are supplementing your food supply with fish that live in some of the ponds on the island. You catch a brightly colored fish with red and black stripes, filet it, pan fry it, and spit out your
first bite because it tastes like it had been soaked in urine. Back at camp, your guide from a nearby island is pan frying fish with red and black stripes he caught in an adjacent pond. When you tell him not to eat those, he smiles and says these are the best-tasting fish in the whole island chain! You look closer and see the pattern of the red and black stripes is just a little different from the fish you caught.What principle of ecology have you just experienced firsthand? A) Batesian mimicry B) commensalism C) mutualism D) Müllerian mimicry