What is the role of the hormone, gastrin, in the stomach?
What will be an ideal response?
The stomach increases or decreases its acid secretion depending on when and what you eat. Arrival of food in the stomach, especially protein, triggers endocrine cells in the stomach lining to secrete the hormone gastrin into the blood. Gastrin acts on acid-secreting cells of the stomach lining, causing them to increase their output. When the stomach is empty, gastrin secretion declines. The resulting decrease in acid secretion minimizes the likelihood that excess acidity will damage the stomach wall.
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Lysosomes digest unneeded intracellular debris through the process of __________.
A. endocytosis B. phagocytosis C. autophagy D. pinocytosis E. exocytosis
Which part(s) of a neuron that conduct(s) an electrical signal towards an adjacent neuron?
a. dendrites b. cell body c. axon d. both dendrites and the axon e. dendrites, cell body, and the axon
In the light-independent reactions, when CO2 is added to a molecule of Ribulose 1,5-bisphosphate (RuBP) the product is
A. pyruvate. B. glyceraldehyde-3-phosphate. C. 3-phosphoglycerate. D. citric acid. E. glucose.
Anything that occupies space and has mass is called
A. energy. B. an electron. C. space. D. living. E. matter.