Which of the following are functions of skeletal muscle?
A. Maintain posture.
B. All are functions of skeletal muscle.
C. Stabilize joints.
D. Generate heat.
Ans: B. All are functions of skeletal muscle.
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Which is/are true regarding organic acids?
A. They are weak acids. B. They are often involved in metabolic reactions. C. They often exist in the ionized form at the near-neutral pH found in a cell. D. Pyruvate and pyruvic acid refer to different forms of the same substance. E. All of the choices are true.
The plant hormone abscisic acid (ABA) is involved in the regulation of photorespiration. Based on this information, ABA likely plays a role in
A. the opening and closing of stomata. B. the photoelectric effect. C. cyclic photophosphorylation. D. noncyclic photophosphorylation. 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 photo respiration in photosynthesis? What other information is related to the question? Choose Answer Do you have all the information needed to determine what processes ABA regulates in plants? 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 statements about meristems is false?
A. Meristems contain a mixture of differentiated and undifferentiated cells. B. Meristems consist of cells that repeatedly undergo mitosis. C. Meristems are found at the tips of stems. D. Meristems are found at the tips of roots. E. Growth only occurs at meristems and not in other regions of the plant body.
Although most autotrophic microorganisms fix carbon dioxide using the Calvin-Benson cycle, this pathway is absent in archaea.
Answer the following statement true (T) or false (F)