A lichen is a symbiotic association between a fungus and a photosynthetic organism. The photosynthetic organism provides food. The fungus provides protection and minerals. This type of relationship is known as
a) mutualism
b) parasitism
c) coexistence
d) commensalism
Ans: a) mutualism
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Which body site is preferentially infected by foodborne pathogens?
A) gastrointestinal tract B) respiratory tract C) cerebrospinal fluid D) liver
A regression analysis predicts how much one variable will change in response to a change in a second variable
Indicate whether the statement is true or false
In order for a muscle to contract, calcium ions released from the sarcoplasmic reticulum must bind to
A. troponin. B. myosin. C. tropomyosin. D. ATP. E. actin.
A meal representative of what an endurance athlete should eat 2 to 4 hours before an event is
a. steak, eggs, milk, and hash browns. b. a turkey sandwich, cottage cheese, milk, and a chocolate bar. c. two scrambled eggs, a bran muffin, an apple, and orange juice. d. spaghetti with sauce, green beans, and low-fat milk.