Question 28 An animal living in the arctic may regulate the flow of their blood near the body's surface in order to maintain a minimal loss of body heat in a process called vasoconstriction endothermy O vasodilation thermogenesis

QUESTION 34 The membrane is selectively permeable to all of the following molecules EXCEPT: Water Sodium Glucose Oxygen

Question 27 The biggest challenge for a saltwater fish swimming into an estuary from the ocean is the temperature change that would stress the fish by denaturing its proteins. the high water flow that would make the fish expend more energy. the low oxygen content that would give the fish difficulty in swimming aerobically. the change in water solute content that would challenge the osmotic balance of the fish.

QUESTION 47 The role of oxygen gas in our cells is to     accept electrons that come from NADH.     produce CO2.     react with glucose to split water.     catalyze reactions in glycolysis.     breakdown ATP.

Question 9 Many sea mammals , fish, and birds have the same body form, i.e. whales, marlin, and penguins. Which of the following is the best explanation for this observation? This is the only shape that will allow them to maintain a constant body temperature in water. Their shapes are the result of convergent evolution, which reduces drag while swimming. All of the organisms needed to develop similar body shapes so they could swim. All of their bodies have been compressed since birth by intensive underwater pressures.

QUESTION 6 Two chambers, X and Y, are separated by a semi-permeable membrane that allows water and urea, but not glucose, to pass through. At the start, chamber X contains a solution of urea in wate and chamber Y contains a solution of glucose in water. The molarity (measure of concentration) of urea in chamber X is the same number as the molarity of glucose in chamber Y. Which of the following will occur after sufficient time? There will be overall diffusion of glucose from X to Y until glucose concentration in Y exceeds glucose concentration in X. There will be overall diffusion of glucose from X to Y until glucose concentration is equal in both chambers. There will be overall diffusion of glucose from Y to X until glucose concentration in X exceeds glucose concentration in Y. There will be overall diffusion of glucose from Y to X until glucose concentration is equal in both chambers. Glucose will not diffuse across the membrane.

QUESTION 20 During severe dehydration during exercise in the heat (>6%), the major concern replacing fluids is to replace water in the following system: O non-extracellular compartment O Intracellular compartment Intravascular compartment O Interstitial compartment

Question 29 Which of these will reverse metabolic acidosis? O Ingestion of aspirin O H+ retention in kidneys O Vomiting and diarrhea O Deep and fast breathing O Alcohol ingestion

Question 28 Which enzyme breaks glucose into 2 molecules of 3 carbons each? O pyruvate deydrogenase O phosphoglycerokinase Aldolase O phosphoglucoisomerase O Hexokinase

Question 9 The product of the oxidation of glyceraldehyde 3-phosphate is: O 2-phosphoglycerate O 1,3-biphosphoglycerate O phosphoenolpyruvate O fructose 1,6-biphosphate oxaloacetate Previc