Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 33, Problem 24RQ
Which is an example of negative feedback?
- lowering of blood glucose after a meal
- blood clotting after an injury
- lactation during nursing
- uterine contractions during labor
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Identify the follow as either negative or positive feedback.
The pancreas producing insulin to decrease blood sugar after a meal.
Clotting factors in the blood triggering the release of more clotting factors after damage to a blood vessel.
Contractions in childbirth resulting in labor and delivery.
Which of the following is an example positive feedback?
contractions in childbirth
blood glucose
body temperature
body fluid pH
Which of the following is an example of a positive feedback loop?
Regulation of Calcium levels in the blood
Regulation of water balance
Regulation of blood sugar
Regulation of blood clotting
Chapter 33 Solutions
Biology 2e
Ch. 33 - Figure 33.11 Which of the following statements...Ch. 33 - Figure 33.21 State whether each of the following...Ch. 33 - Figure 33.23 When bacteria are destroyed by...Ch. 33 - Which type of animal maintains a constant internal...Ch. 33 - The symmetry found in animals that move swiftly is...Ch. 33 - What term describes the condition of a desert...Ch. 33 - A plane that divides an animal into equal right...Ch. 33 - A plane that divides an animal into dorsal and...Ch. 33 - The pleural cavity is a part of which cavity?...Ch. 33 - How could the increasing global temperature...
Ch. 33 - Although most animals are bilaterally symmetrical,...Ch. 33 - Which type of epithelial cell is best adapted to...Ch. 33 - Which type of epithelial cell is found in glands?...Ch. 33 - Which type of epithelial cell is found in the...Ch. 33 - Which type of connective tissue has the most...Ch. 33 - Which type of connective tissue has a mineralized...Ch. 33 - The cell found in bone that breaks it down is...Ch. 33 - The cell found in bone that makes the bone is...Ch. 33 - Plasma is the. fibers in blood matrix of blood...Ch. 33 - The type of muscle cell under voluntary control is...Ch. 33 - The part of a neuron that contains the nucleus is...Ch. 33 - Why are intercalated discs essential to the...Ch. 33 - When faced with a sudden drop in environmental...Ch. 33 - Which is an example of negative feedback? lowering...Ch. 33 - Which method of heat exchange occurs during direct...Ch. 33 - The body’s thermostat is located in the...Ch. 33 - Which of the following is not true about...Ch. 33 - Which of the following is not a way that...Ch. 33 - How does diffusion limit the size of an organism?...Ch. 33 - What is the relationship between BMR and body...Ch. 33 - Explain how using an open circulatory system...Ch. 33 - Describe one key environmental constraint for...Ch. 33 - How can squamous epithelia both facilitate...Ch. 33 - What are the similarities between cartilage and...Ch. 33 - Multiple sclerosis is a debilitating autoimmune...Ch. 33 - When a person leads a sedentary life his skeletal...Ch. 33 - Why are negative feedback loops used to control...Ch. 33 - Why is a fever a “good thing” during a bacterial...Ch. 33 - How is a condition such as diabetes a good example...Ch. 33 - On a molecular level, how can endotherms produce...
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- A lack of iodide in the diet would produce which of the following (select all that apply) - low body temperature - low blood glucose levels - lack of calcium absorption in small intestine - lack of uterine contractionsarrow_forwardDescribe if each of the following mechanisms is regulated by positive or negative feedback. neanive 1. When you are hot, you sweat and your blood vessels dilate. As your body cools, you sweat less your blood vessels return to normal. 2. When blood clots, more and more platelets rush to the area 3. When a baby is born, the uterus contracts more often and more forcefully until the baby is born. 4. Blood sugar is regulated by insulin. As blood sugar returns to normal, less insúlin is produced. 5.When you are cold, your blood vessels constrict and your muscles shiver. As your body returns to normal, you cease shivering and your blood vessels restore normal blood flow. 6.After pregnancy, the suckling of an infant causes an increase in milk production.arrow_forwardIdentify if the statement is True or False. If the statement is false, identify what is incorrect and correct it. The Endocrine system secretes regulatory hormones important for growth, reproduction and metabolism. The digestive system breaks down food, allows for nutrient absorption into blood and eliminates indigestible materials Extrinsic regulation results from activity of nervous system or endocrine system. In positive feedback the initial stimulus produces a response that reinforces the stimulusarrow_forward
- Jamie has fallen ill. Her body temperature has risen to high levels. Her blood pressure is high and her glucose level is low. In order for her body to return to homeostasis and for Jamie to feel better, the following events are taking place: Select all that apply Dilating blood vessels reduce blood pressure Lowering her body temperature by sweating Raise her body temperature by sweating Apply positive feedback to restore glucose levels in the blood stream by using the hormone glucagon which will raise blood sugar Apply negative feedback to restore glucose levels in the blood stream by using the hormone glucagon which will raise blood sugar Constricting blood vessels to increase blood pressurearrow_forwardIs this an example of positive or negative feedback? A man is potty trainging his daughter. When she potties on the floor, he tells her "No, no. Potty goes in the potty."arrow_forwardThe statement "A baby who is being breastfed is an example of positive feedback mechanism", is it true or false?arrow_forward
- Identify the negative feedback loop from the examples below. hormone production in preteens causes puberty to begin an automatic drinking bowl for pets stops dispensing water when it reaches the right level shivering when you feel cold ethylene gas causes fruit in a bowl to ripenarrow_forwardWhich of the following is an example of negative feedback? a The uterine contractions during childbirth push the baby's head against the cervix which stimulates the uterus to contract b The release of platelets that aggregate at the site of a blood vessel injury c "As blood sugar level rises, insulin is released which promotes the absorptiom of glucose from the blood by liver, muscle and fat cells" d None of the abovearrow_forwardExplain the components of a feedback loop and discuss what would happen if secretion of a body chemical controlled by a negative feedback system became too great.arrow_forward
- Which hormone is primarily responsible for the contractions during labor? a. oxytocin b. estrogen c. -HCG d. progesteronearrow_forwardcreate your own diagram by illustrating how the positive and negative feedback mechanism works. You should use specific condition in the body like (temperature regulation, osmotic balance and glucose levels). Make your diagram creative and presentable by making use of colors and other art materials and don’t forget to put labels on your work.arrow_forwardIf the oxygen level in the blood decreases, the brain sends a message to the lungs/diaphragm to breathe faster, which increases the levels of oxygen in the blood. This describes a negative or positive feedback loop.arrow_forward
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