Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 50, Problem 3U
A 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. NaCl
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Water reabsorption involves the movement of water via the process of _______.
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In a freshwater fish, a. water moves into the fish by osmosis.b. ions diffuse into the fish.c. urine has a high solute concentration.d. cells pump ions out of the fish.
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
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Chapter 50 Solutions
Biology
Ch. 50 - Which of the following is NOT an ion...Ch. 50 - Prob. 2UCh. 50 - A sharks blood is isotonic to the surrounding...Ch. 50 - An important function of the excretory system is...Ch. 50 - Which of the following is a function of the...Ch. 50 - Humans excrete their excess nitrogenous wastes as...Ch. 50 - An osmoregulator would maintain its internal...Ch. 50 - Prob. 1ACh. 50 - A viral infection that specifically interferes...Ch. 50 - Diuretics are drugs that can be used to treat high...
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- Which of the following is a component of filtrate but not normally a component of urine? a. water b. erythrocytes c. nitrogenous waste d. glucosearrow_forwardWhich 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+arrow_forwardTo keep the proper concentrations of water and solutes in their blood, freshwater bony fish must drinka. lots of water and excrete large volumes of urine that are hypotonic to body fluids.b. no water and excrete large volumes of urine that are hypotonic to body fluids.c. lots of water and excrete large volumes of urine that are isotonic to body fluids.d. no water and excrete large volumes of urine that are isotonic to body fluids.arrow_forward
- You are studying renal function in different species of mammals that are found in very different environments. You look at species from a desert environment and compare them with ones from a tropical environment. The desert species would be expected to havea. shorter loops of Henle than the tropical species.b. longer loops of Henle than the tropical species.c. shorter proximal convoluted tubules than the tropical species.d. longer distal convoluted tubules than the tropical species.arrow_forwardIn reptiles, distal collecting tubules merge to form collecting ducts, which ultimately form the ____. a. ureter b. urodeum c. cloaca d. renal veinarrow_forwardHuman beings accumulate ________ before excreting nitrogenous waste. a. nitrogen b. ammonia c. urea d. uric acidarrow_forward
- . _____ reabsorption from the nephrons is ordinarily 100%.a. Sodium c. Waterb. Glucose d. Ureaarrow_forwardA scientist is analyzing a sample of blood that was obtained from a dog. Which of these findings would most strongly indicate that the excretory system of the dog is not functioning properly?arrow_forwardWhich of the following causes the kidney to conserve/retain sodium? a. aldosterone b. vasopressin c. oxytocin d. corticosterone Which of the following class of chemicals exerts its effects by entering cells, binding intracellular receptors, and affecting gene expression? a. Peptides b. Steroids c. Bioactive amines d. Amino acidsarrow_forward
- Glomerular filtration is a(n) __________ driven process. a. osmosis b. diffusion c. ATP d. relaxationarrow_forwardThe major role of this electrolyte is to maintain osmotic pressure in the extracellular fluid (ECF). a. HCO3– b. Ca2+ c. Na+ d. K+arrow_forwardBowman’s capsule, the start of the tubular part of a nephron, is located in the_______ . a. renal cortex c. renal pelvis b. renal medulla d. renal arteryarrow_forward
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