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46) The expressed form of a gene is described as the organism’s ________. A) phenotype B) karyotype C) genome D) genotype  

11) Based on note comments, the basic difference between spermatogenesis and oogenesis is that ________. A) during spermatogenesis two more polar bodies are produced B) the mature ovum is n, while the sperm is 2n C) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell D) spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

Match the electrolyte composition for the following:   A) Interstitial fluid B) Blood plasma C) Intracellular fluid

67) Match the following

62) Which statement about CO2 is incorrect? A) Its concentration in the bloodstream is reduced by hyperventilation. B) Its accumulation in the bloodstream is associated with a decrease in pH (acidosis). C) CO2 dissolves in the blood plasma and then is routed through the RBCs to form bicarbonate ion (HCO3-). D) CO2 concentrations are always greater in venous blood than in arterial blood.  

14) The testicular cells that construct the blood-testis barrier that prevents membrane-bound antigens from escaping into the bloodstream are the ________. A) spermatocytes B) spermatogonia C) sustentacular cells D) interstitial cells  

Match the following:   A) Dehydration B) Edema C) Hyponatremia D) Aldosterone E) Addison’s disease

13) A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________. A) decreased testosterone secretion B) excessive beard growth C) increased spermatogenesis D) shrinkage of the anterior pituitary gland  

45) Recessive alleles are best defined as ________. A) a deleterious or disease-causing allele B) a weakened or attenuated allele C) an allele only expressed when the allele is homozygous D) the least frequently expressed allele in a given population  

Match the following:   A) Site of aldosterone action. B) Blood supply containing substances too large to be filtered. C) Blood vessel in between capillary plexuses of the portal system. D) Site where filtrate is first formed.