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Countercurrent flow allows_____ to maximize their oxygen uptake from water.
a. fishes c. frogs
b.
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- Water reabsorption involves the movement of water via the process of _______. a. diffusion b. osmosis c. hydrostatic pressure d. ATPA shark’s blood is isotonic to the surrounding seawater because of the reabsorption of ____ in its blood. a. ammonia b. uric acid c. urea d. NaClOsmotic pressure tends to: A. Be a pushing pressure B. Be a drawing (pulling) pressure C. Neither A or B D. Both A & B
- Most water is lost daily via the? A. Skin B. Colon C. Kidneys D. LungsThe countercurrent exchange system for gills relies on diffusion to diffuse oxygen into the blood. This system works because the blood in the gills. a. increasing encounters [Select] b. decreasing water as the blood moves from [Select] a. arteries [Select] b. capillaries c. Veins ✰ concentrations of oxygen in the a.arteries b. capillaries to C. veins through the capillaries. This also ensures that a. less blood always has [Select] b. more c. the same amount of oxygen than the water for continued diffusion.As CO2 levels in the water __________, the pH ______________. a. increase, increases b. increase, decreases c. decrease, decreases d. decrease, stays the same
- Which of the following statements regarding marine osmoregulators is (are) true? A. Most marine invertebrates are osmoregulators. B. Marine osmoregulators tend to lose water to the environment by diffusion. C. Marine osmoregulators are isoosmotic with the external environment. D. Marine osmoregulators bring salt into the body via active transport processes in the gills and skin. E. All of the above above answer choices correctly answer the question.Which of the following is an endotherm? a. a shark b. a frog c. a monkey d. a snake. _____ reabsorption from the nephrons is ordinarily 100%.a. Sodium c. Waterb. Glucose d. Urea
- Hyperkalemia is associated with the inability of the kidneys to properly filter potassium out of the blood. Which type of membrane transport do the kidneys use to filter the blood? A. Hydrostatic pressure B. Osmotic pressure C. Filtration D. Active diffusionWhich of these ions is used to symport amino acids, glucose, and othersolutes through the apical membrane of tubule cells?a. K+ b. Na+ c. C− d. Ca2+ e. Mg2+20. Fluid in compartment 5 is ______________ compared to fluid LEAVING compartment 6 (at the end) after a night of drinking alcoholic beverages. A. Hypoosmotic B. Hyperosmotic C. Isoosmotic