EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Textbook Question
Chapter 50, Problem 4U
An important function of the excretory system is to eliminate excess nitrogen produced by
a. Frog
c. Iguana
b. Freshwater fish
d. Camel
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Urea...
A. Is the least expensive nitrogen end-product to produce
B. Is the least toxic nitrogen end-product
C. Is excreted by diffusion across the body surface or gill of aquatic animals
D. Provides the greatest water savings (in terms of excretion of nitrogen waste products)
E. None of the above
What is the advantage of adding urea to feed in some cattle diets?
Select one:
a.
It helps reduce CH3 production and hence the amount of eructation which contributes to global warming
b.
It helps stimulate kidney activity to help reduce blood toxins
c.
Urea helps control the growth of unwanted fungi and protists
d.
It is a cheap way to increase protein production by rumen symbionts
Which organism is correctly paired with the structures it uses for the excretion of nitrogenous wastes and carbon dioxide?a) human-malpighian tubulesb) hydra-cell membranesc) paramecium-nephridiad) earthworm-alveoli
Chapter 50 Solutions
EBK 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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- 1 Uric acid is a waste product used by birds and insects because: a. It is very light. b. It is metabolically cheap to produce. c. It does not require a kidney for its production. d. It makes a coloured pigment for the bird or insect. e. It can easily be converted into useful products like feathers. 2 The nephridia of an earthworm differs from the human nephron in that the nephridia: a. Has no reabsorption of salts. b. Has no reabsorption of water. c. Does not filter the blood. d. Selectively pumps ammonia into the nephridia. e. Is excreting ammonia instead of urea. 3 Oxygen dissociation in your blood: a. Is the release of oxygen to the tissues. b. Occurs in the lungs. c. Is the ionisation of oxygen in water (blood plasma). d. Is controlled by the enzyme carbonic anhydrase. e. Allows oxygen to attach to the haemoglobin. 4 Veins require valves, while arteries do not, because: a. The veins keep branching and the valves control which branch is open. b. Veins have blood that is…arrow_forwardWhat substance(s) may be found in the urine of someone with kidney disease or a urinary tract infection? Choose all that apply. a. Proteins b. Blood c. Urea d. Saltsarrow_forwardIf a fresh water fish is placed in an aquarium containing sea water,will the fish be able to survive?Explain giving reasons.arrow_forward
- Which of the following individuals is most likely to contain the largest percentage of water? a. a frail 76-year-old woman b. a chunky 52-year-old male athlete c. a healthy 88-year-old man d. a lean 35-year-old male athletearrow_forwardA freshwater fish was accidentally placed in salt water. After several minutes in the saline water it died. What is the most logical explanation for its death?arrow_forwardWhat we mean when we say (excretory products are useful to humanity)? Discuss and give an example.arrow_forward
- Read this article (http://openstaxcollege.org/l/saltwater) for an explanation of the effect of seawater on humans. What effect does drinking seawater have on the body?arrow_forwardMetabolic acidosis can be due to ______ A) Muscle cell fermentation C) Hyperventilation D) Vomitingarrow_forwardWhich of the following is an endotherm? a. a shark b. a frog c. a monkey d. a snakearrow_forward
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