Exocytosis is stimulated by regional increases in cytoplasmic ________ concentration
Fill in the blank with correct word.
Answer: calcium
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Response
Match the letter of each example from childbirth to the appropriate component of a positive feedback loop. A. pituitary gland secretes oxytocin, which acts on the uterus B. uterine contractions increase C. fetus is pushed against uterine opening D. receptors detect stretch E. brain receives and compares stretch information Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about positive feedback? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following is a plant-derived ingredient that served as one of the world’s first antimalarial drugs?
a. digitalis b. aspirin c. quinine d. ephedrine
Diatomaceous earth is the fine powder produced from grinding the fossilized shells of diatoms
Indicate whether the statement is true or false.
Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
a. plasmodesmata. b. intermediate filaments. c. tight junctions. d. desmosomes. e. gap junctions.