Cells found only in certain (specific) tissues are known as:
a. Histiocytes
b. Kupffer Cells
c. Alveolar Cells
d. Macrophages
Answer: a. Histiocytes
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Why is glycolysis described as having an investment phase and a payoff phase?
A) It both splits molecules and assembles molecules. B) It attaches and detaches phosphate groups. C) It uses glucose and generates pyruvate. D) It shifts molecules from cytosol to mitochondrion. E) It uses stored ATP and then forms a net increase in ATP.
Enzymes are biological catalysts that enhance the rate of a reaction by:
A) decreasing the activation energy. B) decreasing the amount of free energy released. C) increasing the activation energy. D) increasing the amount of free energy released. E) increasing the energy of the transition state
Amphibians are not especially successful land-dwellers because of their
A) two-chambered hearts. B) production of a shelled amniotic egg. C) lungs that are supplemented by air sacs. D) reliance on moist skin for gas exchange. E) choice of prey.
Which of the following structures directly controls the pituitary?
What will be an ideal response?