BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 46, Problem 3A
Inactive forms of some molecules are secreted
a. because they take less material and energy.
b. because they must combine with water to be activated.
c. so their activity can be regulated.
d. to prevent them from clogging the gland from which they are secreted.
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Students have asked these similar questions
Hormone X appears to regulate the blood concentration of chemical Y via a negative feedback loop. a. Predict what happens to the secretion of hormone X when the blood concentration of chemical Y decreases. b. What effect will this likely have on the blood concentration of chemical Y?c. Predict what happens to the secretion of hormone X when the blood concentration of chemical Y increases.
Which of the following statements about insulin is true?
a. Insulin acts as a transport protein, cany in g glucose across the cell
membrane.
b. Insulin facilitates the movement of inti acellular glucose transporters to the cell membrane. c. Insulin stimulates the breakdown of stored glycogen into glucose.
d. Insulin stimulates the kidneys to reabsorb glucose into the
bloodstream.
The formation and release of hormones from a cell or structure is calleda. digestion.b. excretion.c. synthesis.d. secretion.
Chapter 46 Solutions
BIOLOGY
Ch. 46.1 - Prob. 1LOCh. 46.1 - Prob. 2LOCh. 46.1 - Prob. 3LOCh. 46.2 - Prob. 1LOCh. 46.2 - Prob. 2LOCh. 46.3 - Prob. 1LOCh. 46.3 - Prob. 2LOCh. 46.4 - Prob. 1LOCh. 46.4 - Explain how absorbed nutrients move into the blood...Ch. 46.5 - Prob. 1LO
Ch. 46.5 - Prob. 2LOCh. 46.5 - Prob. 3LOCh. 46.6 - Prob. 1LOCh. 46.6 - Prob. 2LOCh. 46.7 - Prob. 1LOCh. 46.7 - Prob. 2LOCh. 46.7 - Prob. 3LOCh. 46.8 - Prob. 1LOCh. 46.8 - Describe how rumination works.Ch. 46.8 - Prob. 3LOCh. 46 - Prob. 1DACh. 46 - If you constructed a phylogeny using molecular...Ch. 46 - Prob. 1IQCh. 46 - Prob. 2IQCh. 46 - Prob. 3IQCh. 46 - Prob. 4IQCh. 46 - How is the digestion of fats different from that...Ch. 46 - Although the stomach is normally thought of as the...Ch. 46 - After being absorbed through the intestinal...Ch. 46 - Which of these pairings is incorrect? a. Fat...Ch. 46 - Intestinal microorganisms aid digestion and...Ch. 46 - Prob. 6UCh. 46 - Which of the following represents the action of...Ch. 46 - Prob. 1ACh. 46 - The primary function of the large intestine is to...Ch. 46 - Inactive forms of some molecules are secreted a....Ch. 46 - Prob. 4ACh. 46 - Many birds possess crops, although few mammals do....Ch. 46 - Suppose that you wanted to develop a new treatment...Ch. 46 - How could a drop in plasma proteins and a decrease...Ch. 46 - Unlike many cases of convergence (see section...Ch. 46 - Prob. 5S
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- Which of the following statements concerning insulin is NOT true? a. Insulin can increase glycogen synthesis. b. The presence of insulin can increase glucose uptake. c. Insulin can increase the secretion of epinephrine. d. It is secreted by the beta cell of pancreas. e. Glucose in blood can up-regulate the secretion of insulin.arrow_forwardYour Uncle Sal likes to party. When he goes out drinking, he complains that he needs to urinate more often. You explain to him that this is because alcohol suppresses the release of the hormone a. thyroxine, which increases water reabsorption from the kidney. b. thyroxine, which decreases water reabsorption from the kidney. c. ADH, which decreases water reabsorption from the kidney. d. ADH, which increases water reabsorption from the kidney.arrow_forwardFactors known to increase ACTH secretion include all of the following except: a. stress b. ADH c. Hyperglycemia d. CRH e. a and barrow_forward
- The substance in question 3 that is not anenzyme isa. a zymogen.b. a nutrient.c. an emulsifier.d. a neurotransmitter.e. a hormone.arrow_forwardWhich of these statements about the hormone insulin is true? a.It is secreted by alpha cells in the pancreatic islets. b.It is secreted in response to a rise in blood glucose. c.It stimulates the production of glycogen and fat. d.Both a and b are true. e.Both b and c are true.arrow_forwardndicate whether each of the following statements is true or false. If false, correct the statement or provide a briefexplanation for why it is false.a. Insulin increases the rate of glucose uptake by the tissues.b. Glucagon is the hormone that signals low blood glucose levels.c. The muscles can use glucose, fatty acids and ketone bodies for fuel.d. Epinephrine stimulates breakdown of glycogen in muscles when there is an immediate needfor energy by muscle cells.e. Glucagon stimulates glycogenolysis to maintain the blood glucose concentration.f. With high [carbohydrate] levels, excess glucose (after glycogen storage has reached amaximum) is converted to fat.g. The high potential electrons of NADH enter the respiratory chain at NADH-Q reductase.h. Ubiquinol (QH2) is also the entry point for electrons from NADH of flavoproteins.i. Cytochrome reductase catalyzes the transfer of electrons from cytochrome c to O2.arrow_forward
- Growth hormonea. increases the usage of glucose.b. increases the breakdown of lipids.c. decreases the synthesis of proteins.d. decreases the synthesis of glycogen.e. All of these are correct.arrow_forwarda. What hormone is released in response to increased blood glucose? 2. b. The binding of this hormone to its receptor increases the rate of action of a particular transporter. What transporter is this? c. How is the rate increased? d. What enzyme directly involved in glycogen metabolism is activated by this hormone?arrow_forwardWhich of these substances, produced by many body tissues, can promoteinflammation, pain, and vasodilation of blood vessels?a. endorphins c. thymosin e. prostaglandinsb. enkephalins d. epidermal growth factorarrow_forward
- Which of the following is true about lipophilic hormones? a. They are freely soluble in the blood. b. They require a transport protein in the bloodstream. c. They cannot enter their target cells. d. They are rapidly deactivated after binding to their receptors.arrow_forwardWhich of the following correctly describes the hormone insulin? a. It is produced by B cells in the pancreas. b. It increases glucose uptake by liver and muscle cells. c. It is a peptide hormone. d. It lowers blood glucose levels. e. All of these are correct.arrow_forwardAn elderly gentleman has recently been diagnosed with cirrhosis of the liver. He admits to being a heavy drinker. This man is your patient. Given the damage to his liver, you would have concerns about all of the following except a. regulating his ability to maintain body temperature, because of decreased thyroid hormone levels. b. internal bleeding, because he has impaired ability to synthesize clotting proteins. c. edema, because of impaired synthesis of plasma proteins (e.g., albumin). d. jaundice, because his liver is less efficient at removing bilirubin from the blood.arrow_forward
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