A nerve impulse allows what to release in muscle contraction?
What will be an ideal response?
Ans: Calcium
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Germination requires the use of metabolic reserves in the seed. Which of these compartments contains starch used to fuel early seedling growth?
A. amyloplasts B. protoplasts C. chloroplasts D. chromoplasts E. mitochondria
Which of the following effects could result from activation of the sympathetic nervous system?
A) decreased heart rate B) stimulated digestive organs C) secretion of epinephrine D) narrowing of the bronchi
Which of the following statements is true of asexual reproduction?
A.) It produces few offspring. B.) It produces genetically identical offspring. C.) It produces genetic diversity. D.) It produces offspring that are resistant to antibiotics.
If the trends shown in the graph continue, how might this affect photosynthesis?
A) Photorespiration may increase, leading to an increase in photosynthetic production of sugar. B) Photorespiration may increase, leading to a decrease in photosynthetic production of sugar. C) C4 and CAM plants would be unable to photosynthesize. D) There would be no effect on photorespiration, since CO2 and temperature are stable.