Q. How many genes are believed to constitute the human genome? A. one million B. ten million C. 100,000 D. 70,000 Answer- 70,000 Q. During which meiotic division is the number of chromosomes halved? A. during meiosis I …
Q. Epithelial linings of the digestive tract, respiratory tract, urinary bladder, and urethra all form from the _______________layer of the gastrula. A. ectoderm B. mesoderm C. endoderm D. chorionic villi Answer- endoderm …
Q. Specifically, where are sperm cells formed within the testes? A. within the tunica albuginea B. within the mediastinum testes C. within the seminiferous tubules D. in association with interstitial cells Answer- within t…
Q. Where does most secretion of substances out of the blood occur? A. distal convoluted tubule B. proximal convoluted tubule C. loop of Henle D. Glomerulus Answer- distal convoluted tubule Q. Cerebrospinal fluid, fluid wi…
Q. Choose the statement that does not correctly characterize the kidneys. A. The kidneys are positioned retroperitoneally. B. The right kidney is usually 5 to 2 centimeters higher than the left one. C. The kidney is padded b…
Q. The exchange of gases between the blood and the cells of the body is called _________________. A. external respiration B. internal respiration C. pulmonary ventilation D. cellular respiration Answer- internal respiratio…
Q. Nutrients that the body needs but cannot synthesize on its own are called __________________. A. essential nutrients B. RDAs C. macronutrients D. micronutrients Answer- essential nutrients Q. Which of these carbohydrat…
Q. The _____________ layer of the alimentary canal contains loose connective tissue, glands, blood and lymphatic vessels, and nerves. A. mucosa B. submucosa C. muscular layer D. serosa Answer- submucosa Q. Activities of t…
Q. The walls of lymphatic vessels are similar to those of cardiovascular _____________. A. arteries B. veins C. capillaries D. distributing arteries Answer- veins Q. The lymphatic trunk that drains the upper limb is the _…
Q. Which layer of the heart or pericardium serves the dual purpose of lining the pericardium and forming the outermost wall of the heart? A. fibrous pericardium B. parietal pericardium C. visceral pericardium (epicardium) D…
