Which organisms live in the profundal zone?
a. amphibians
b. bacterial decomposers
c. plants
d. zooplankton
e. photosynthetic algae
ANSWER: b
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A woman visits a doctor. After hearing her symptoms and running some blood work, the doctor determines that she has an under-active pineal gland. What were her likely symptoms?
A. insomnia (due to low melatonin levels) B. muscle soreness and inflammation (due to low cortisol levels) C. increased urination (due to high glucose levels) D. constipation (due to low gastrin levels)
Which of the following statements regarding enzymes is true?
a. Enzymes are permanently altered by the reactions they catalyze. b. Enzymes only work on endergonic reactions. c. Enzymes alter the chemical composition of the products of a reaction. d. Enzymes increase reaction rates. e. Enzymes prevent changes in substrate concentrations from having an effect on reaction rate.
Chancroid
A. presents with a hard chancre. B. is caused by Haemophilus ducreyi. C. is very painful in both sexes. D. is caused by a spirochete.
There are advantages and disadvantages to adaptations. Animals that are endothermic are likely to be at the greatest disadvantage in _____
A) very cold environments B) very hot environments C) environments with a constant food source D) environments with variable and limited food sources