BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 46, Problem 4A
Summary Introduction
Introduction:
Obesity is a condition in which the body fat of a person reaches an unhealthy level. Such persons have a BMI (body mass index) of more than
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A person traveled to Asia and is having trouble with jet lag. What would be the best way to get used to their new schedule and why?
A.
This person likely has a problem with their thyroxine levels, and is therefore very tired.
B.
It’s likely that they have insufficient glucagon production, and that is why they’re so tired. Therefore, they need to eat some bread or rice.
C.
They should expose themselves to daylight as long as the sun is out to force their pineal gland to re-set its timing. This way, they’ll produce melatonin at the right time, and they’ll soon fall asleep when everyone else does in that Asian city.
D.
Both A and B are correct.
Which 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.
The release of insulin from the pancreas is directly regulated by
Select one:
a. an increase in blood sugar levels
b. a decrease in insulin levels
c. a decrease in glucagon levels
d. an increase in pancreas stimulating hormone
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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- ndicate 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_forwardWhich 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_forwardWhich 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.arrow_forward
- When a person fasts for days or weeks the body must compensate by changing proteins (muscle) and fats (adipose) into glucose. What is the name of this homeostatic process and what hormone stimulates this process? A. glycogenolysis stimulated by insulin B. glucohydro-attenuation stimulated by adrenalin C. gluconeogenesis stimulated by cortisol D. carbo-redemtion stimulated by cortisol. arrow_forwardWhich adipokine is expressed at higher levels in obese individuals? a. insulin b. growth hormone c. angiotensin II d. leptin e. follicle stimulating hormonearrow_forwardAn increase of insulin level causes A. A decrease in the concentration of blood glucose B. A decrease in the permeability of cell membranes to glucose C. An increase in the production of glucose from glycogen D. None of these 2. Diabetes mellitus is characterized by A. Glucose in the urine B. Excessive urine production C. Dehydration D. All of these 3.Insulin-dependent diabetes mellitus is caused by A. Excess sugar in the diet B. Obesity C. A disorder of the immune system D. An effect of aging 4.Treatment of noninsulin-dependent diabetes mellitus usually involves A. Controlling the diet B. Exercising regularly…arrow_forward
- Diabetes mellitus is a disease characterized by the: a. inadequate production of insulin in the body. b. rapid break down of carbohydrates in the body. c. excessive movement of blood glucose into various body cells. d. failure of the body to produce ketonesarrow_forwardWhich of the following statements about glucagon is true? a. Glucagon causes glycogen to break down to form glucose. b. Glucagon secretion is highest following a heavy meal. c. Glucagon promotes the uptake of glucose by liver and muscle cells. d. Glucagon works with cortisol to lower blood glucose levels.arrow_forwardWhat makes the blood abnormally acidic? A. Low levels of ketones B. high level of insulin C. Low level of insulin D. High level of ketones E. None of the abovearrow_forward
- When you open a pizza box, particles of the pizza enter the air around you, and enter your nose when you breathe in. Which of the following internal control systems is responsible for gathering information about the conditions inside and outside of the body? * A. Communicating system B. Control center C. Sensor D. Thalamus 2. Which of the following hormonal imbalance explains obesity among women? * A. Low level of estrogen weakens the bone. B. Excess levels of androgen make oil glands extra productive. C. Changing estrogen levels affecting serotonin or “happy hormone”. D. Decreasing estrogen level stimulates a craving for fatty, salty, and sweet foods.arrow_forwardIn tests of Antabuse effectiveness, why are placebos so effective?A. Antabuse has no physiological effects.B. The chemicals used as placebos interact with liver enzymes.C. Antabuse is effective mainly by the threat of illness after drinking.D. Placebos tend to relieve pain.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_forward
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