Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 37, Problem 1CBQ
Discuss the major ways in which glucose homeostasis is maintained even when a vertebrate is fasting.
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Fill in the blank boxes of the table with short phrases that describe the main role of each organ with respect to glucose/energy metabolism
ORGANS
FASTING
FEASTING
EXERCISE
Intestine
No nutrients are being digested or absorbed
Digests and absorbs nutrients
Depends when the person last ate- could be absorbing or not
Brain
Uses glucose
Pancreas
Releases insulin
Liver
Glycogenolysis
If intense exercise:
Gluconeogenesis, lipolysis, amino acid breakdown
Muscle
Stores glycogen
Builds muscle
Adipose Tissue
Releases triglycerides to yield energy
Kidney
Filtering lots of urea
Filtering urea
Filtering urea
Chapter 37 Solutions
Principles of Biology
Ch. 37.1 - Prob. 1TYKCh. 37.1 - Which statement is false? Water is an inorganic...Ch. 37.2 - Prob. 1CCCh. 37.2 - Prob. 1TYKCh. 37.3 - Prob. 1CCCh. 37.3 - Are the transport processes shown here, including...Ch. 37.3 - Prob. 2CCCh. 37.3 - Prob. 1TYKCh. 37.3 - Prob. 2TYKCh. 37.3 - Prob. 3TYK
Ch. 37.4 - During the absorptive state, an animal is fasting....Ch. 37.4 - Gluconeogenesis occurs when the liver synthesizes...Ch. 37.5 - Prob. 1CCCh. 37.5 - Prob. 1BCCh. 37.5 - Insulin primarily regulates blood glucose...Ch. 37.5 - Prob. 2CCCh. 37.5 - Prob. 2TYKCh. 37.6 - Prob. 1CCCh. 37.6 - Prob. 2CCCh. 37.6 - Prob. 1TYKCh. 37.6 - Prob. 2TYKCh. 37.7 - Prob. 1BCCh. 37.7 - Prob. 1TYKCh. 37.7 - Prob. 2TYKCh. 37.8 - Note that modem medical technology is using a...Ch. 37.8 - Prob. 1TYKCh. 37.8 - Hemodialysis is the treatment of choice for people...Ch. 37 - Prob. 1TYCh. 37 - Prob. 2TYCh. 37 - Prob. 3TYCh. 37 - Prob. 4TYCh. 37 - Prob. 5TYCh. 37 - Prob. 6TYCh. 37 - Prob. 7TYCh. 37 - Prob. 8TYCh. 37 - In the mammalian kidney, filtration is driven by...Ch. 37 - Which of the following cause(s) an increase in Na+...Ch. 37 - Prob. 1CCQCh. 37 - List and define the major processes involved in...Ch. 37 - Prob. 3CCQCh. 37 - Discuss the major ways in which glucose...Ch. 37 - Briefly discuss the parts mid functions of the...
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- What are the 3 macronutrients and how do each provide energy to the body? Define the fed, post-absorptive, fasting, and starved states. Outline changes in the utilization of glucose, fatty acids, amino acids, and ketone bodies as the body transitions from the fed state to the prolonged starvation state. Describe the impacts of insulin, glucagon, epinephrine, and cortisol on CHO, lipid, and protein metabolism. Describe the major pathways that occur in the liver, muscle, adipose tissue. Describe which hormones exercise tends to increase and potential impacts on pathways we’ve discussed. Describe the cori cycle and the glucose-alanine cycle. Describe differences in primary fuel sources by exercise intensity. Describe classical vs moderate CHO loading in preparation for competition in trained athletes. Simple to the point answers please!arrow_forwardEndurance athletes sometimes follow the exercise-and-diet plan described here: 7 days before an event, do exhaustive exercises so as to all but deplete glycogen stores. For the next 2 to 3 days, consume few carbohydrates and do moderate- to low- intensity exercises. Finally, 3 to 4 days before the event, consume a diet rich in carbohydrates. Explain the benefits of this regime.arrow_forwardWhich of the following is TRUE regarding liver metabolism? Select three of the following: The liver (hepatocytes) has hundreds of functions, such as producing glucose, ketones, fatty acids, cholesterol, proteins, and bile for the rest of the body. Hepatocytes have the GLUT2 antiporter, which allows for secondary active transport of glucose into the cells. Hepatocytes have glucokinase that continually makes glucose 6-phosphate, and it has a lower Km than other hexokinases so it continuously metabolizes glucose when concentrations are low. Glucose 6-phosphate is the "transfer station" in the liver since it can be made my multiple pathways and have multiple fates. The liver converts amino acids to citric acid cycle intermediates or pyruvate for gluconeogenesis. The liver oxidizes fatty acids into glucose, which can be sent to other cells and used for energy or converted into phospholipids and triacylglycerol.arrow_forward
- State and recognize the three basic nutritional needs an organism’s diet must satisfy. List the basic stages of nutrition. Predict how perturbations in the hormones leptin and ghrelin influence appetite. Use the concept of pressure to describe the movement of water and nutrients in plant xylem and phloem and blood in vertebrates. Trace the flow of a drop of blood through the four chambers of the heart, the great vessels, lungs, and the blood vessels (arteries, veins, and capillaries) in the systemic circulation in healthy people and people with various malformations of the heart or great vessels. Distinguish between systolic and diastolic blood pressure. Predict how perturbations in body posture or baroreceptors would affect homeostatic control of blood pressure.arrow_forwardOutline the the role of circadian rhythm, hormones and receptors regulating appetite and metabolic activity.arrow_forwardIn the absence of food consumption, the rate of gluconeogenesis (GNG) tends to increase. Explain why this occurs and describe the range of substrates for GNG as fasting continues beyond 18 hours. asaparrow_forward
- Discuss that an adult animal consumed 50 kcal of food. 5 kcal have been excreted in urine and feces. Where did the remaining 45 kcal eventually go?arrow_forwardWhich of the following are mechanisms that prevent the liver from using up glucose that is more urgently required by other tissues? (select all that apply) Group of answer choices Glucokinase (the liver's version of hexokinase) has a lower affinity for glucose than hexokinase does GLUT2 has a lower affinity for glucose than GLUT4 does The liver produces insulin when blood glucose levels are low The liver does not express a phosphofructokinase enzyme The liver increases glycolysis in response to glucagonarrow_forwardWith the aid of a diagram describe the control of blood glucose levels in the fasting state and post consumption.arrow_forward
- Can you answer all the parts to following question, true or false: Q31: A: Complex carbohydrates are broken down by carboxylases in both the mouth and the small intestine (True or False) B: Glycolysis requires the input of energy in order to release energy from glucose (True or False) C: Anorexic hormones signal the body that it is in a fed state (True or False) D: The dependence of hunger on the ratio between insulin and glucagon is an example of signal integration (True or False)arrow_forwardWhich of the following has been shown to be the most effective nutritional strategy to stimulate gain of net muscle tissue protein after exercise? Group of answer choices pick one only 20g whey protein 20g soy protein 20g casein proteinarrow_forwardWhich two statements below accurately describe the roles of insulin and glucagon in maintaining metabolic homeostasis? Select 2 correct answer(s) insulin inhibits glucose uptake in the brain insulin stimulates glucose uptake in muscle cells insulin stimulates glucose release from liver cells Oglucagon stimulates glucose release from muscle cells glucagon increases blood glucose levels in between meals glucagon stimulates glucose uptake in liver cellsarrow_forward
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