How does parathyroid hormone (PTH) work to increase blood calcium levels? What is a disorder that can be caused by excess PTH production?
What will be an ideal response?
PTH increases the blood calcium level by causing the release of calcium ions from bone, increasing calcium ion reabsorption by kidneys, and increasing synthesis of vitamin D, which helps the intestine absorb calcium from food.
Osteoporosis can result from excess PTH production because bones would lose too much calcium and become weak and easily broken.
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a. catabolism b. anabolism c. converting kinetic energy into potential energy d. metabolism e. converting heat energy into chemical energy
Which of the following statements is not correct about lactic acid fermentation?
a. It is inefficient compared to aerobic respiration. b. It uses glucose as a substrate. c. It produces two ATP molecules for every glucose molecule. d. Oxygen is the final electron acceptor of this pathway. e. Glycolysis is the only energy-yielding step of this pathway
Deforestation in the boreal forests is due primarily to:
a. commercial logging for rare woods to be used in furniture. b. commercial logging subsistence agriculture. c. clear-cut logging for industrial wood. d. slash-and-burn agriculture for farming e. slash-and-burn agriculture for cattle ranching.
Plasmodium, the causative agent of malaria, undergoes multiple mitoses before the release of uninucleate daughter cells called (gametocytes/schizonts/coencytes).
Fill in the blank(s) with the appropriate word(s).