BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 49, 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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Chapter 49 Solutions
BIOLOGY
Ch. 49.1 - Prob. 1LOCh. 49.1 - Prob. 2LOCh. 49.2 - Identify the relative toxicity and solubility of...Ch. 49.3 - Prob. 1LOCh. 49.3 - Define reabsorption and secretion.Ch. 49.4 - Prob. 1LOCh. 49.4 - Explain the role of the loop of Henle in the...Ch. 49.5 - Prob. 1LOCh. 49.5 - Prob. 2LOCh. 49.5 - Prob. 3LO
Ch. 49.6 - Prob. 1LOCh. 49.6 - Prob. 2LOCh. 49 - Prob. 1DACh. 49 - Which of the following is NOT an ion...Ch. 49 - Prob. 2UCh. 49 - A sharks blood is isotonic to the surrounding...Ch. 49 - An important function of the excretory system is...Ch. 49 - Which of the following is a function of the...Ch. 49 - Humans excrete their excess nitrogenous wastes as...Ch. 49 - An osmoregulator would maintain its internal...Ch. 49 - Prob. 1ACh. 49 - A viral infection that specifically interferes...Ch. 49 - Diuretics are drugs that can be used to treat high...Ch. 49 - Caffeine inhibits the secretion of ADH. Prior to...Ch. 49 - You and your study partner want to draw the...Ch. 49 - You are studying renal function in different...Ch. 49 - Prob. 1SCh. 49 - Johns doctor is concerned that Johns kidneys may...
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- Water reabsorption involves the movement of water via the process of _______. a. diffusion b. osmosis c. hydrostatic pressure d. ATParrow_forwardWhich of the following is a component of filtrate but not normally a component of urine? a. water b. erythrocytes c. nitrogenous waste d. glucosearrow_forwardYou 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_forward
- Which type of animals consume little or no energy in maintaining water balance?A. Birds B. Mammals C. Marine vertebrates D. Marine invertebrates The following are involved in the regulation of mammalian kidney function except:A. ADH B. Aldosterone C. Renin D. Oxygenarrow_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_forwardIn reptiles, distal collecting tubules merge to form collecting ducts, which ultimately form the ____. a. ureter b. urodeum c. cloaca d. renal veinarrow_forward
- Human beings accumulate ________ before excreting nitrogenous waste. a. nitrogen b. ammonia c. urea d. uric acidarrow_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. _____ reabsorption from the nephrons is ordinarily 100%.a. Sodium c. Waterb. Glucose d. Ureaarrow_forward
- Which of the following structures is most effective for the excretion of excess water? A. The Malpighian tubules of an insect B. The rectal gland of a shark C. The flame cells of a flatworm D. The ionocytes of a crayfish E. All of the above are equally effective in the excretion of excess waterarrow_forwardGlomerular filtration is a(n) __________ driven process. a. osmosis b. diffusion c. ATP d. relaxationarrow_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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