A mycelium is best defined as a(n) ____
a. mushroom
b. mass of hyphae
c. association between a fungus and a plant root
d. reproductive structure of a fungus
e. fungal cell
ANSWER: b
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The pylorus is located at the exit of the:a
stomach. b. esophagus. c. jejunum. d. duodenum. e. rectum.
Plants make ATP during the light reactions of photosynthesis. Why do plants also need to carry out the process of cellular respiration?
A) Plants need to make ATP from cellular respiration only when the conditions for photosynthesis are bad. B) The ATP made during photosynthesis is only enough to fuel the dark reactions. The plant has to carry out cellular respiration to make ATP for other metabolic activities. C) Plants do not need to perform cellular respiration. D) The ATP made during photosynthesis is different from the ATP made during cellular respiration.
Which of the following methods would be the most suitable to assess whether your protein exists as a monomer or in a complex?
(a) gel-filtration chromatography (b) gel electrophoresis (c) western blot analysis (d) ion-exchange chromatography
Osmometer cells in the brain sense an increase in the salt concentration of plasma. This information is sent to the hypothalamus, which notifies the pituitary gland to release the hormone, ADH. ADH causes the kidney to save water, which lowers the salt concentration of the plasma. What characteristic of life does this overall pathway represent?
A. Sensitivity B. Energy utilization C. Cellular organization D. Homeostasis E. Evolutionary adaptation