The portion of a mycorrhizal fungus that penetrates the cell walls of the root cortex is called an
arbuscule.
____________________ Indicate whether the statement is true or false.
T
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For a cell to take up sugar from the bloodstream,
a. sugars must bind to receptors on cells of the pancreas. b. a person must have had a meal with sugar within the last twenty-four hours. c. homeostatic mechanisms must activate the blood-brain barrier. d. glycogen must be broken down to provide a supply of glucose. e. the pancreas must supply the appropriate enzymes to make sugar available.
Which of the functional groups is acidic and can release H+ into a solution?
A. -OH B. C=O C. COOH D. NH2 E SH
Lipases break down
a. carbohydrates. b. proteins. c. nucleic acids. d. lipids.
This organelle acts as a digestive organelle and may also be used to recycle the internal components of a cell.
a. ribosome b. lysosome c. peroxisome d. Golgi apparatus