A group of students are participating in a 24-hour fast to raise money for the foodbank. Fasting refers to refraining from eating for a period of time. Select the answer that describes how the students’ bodies would respond to maintain homeostasis. Select one: a. The beta cells of the islets of Langerhans are producing glucagon to decrease blood glucose levels. b. The alpha cells of the islets of Langerhans are producing insulin to increase blood sugar levels. c. The alpha cells of the islets of Langerhans are producing glucagon to increase blood glucose levels. d. The beta cells of the islets of Langerhans are producing insulin to decrease blood sugar levels.

A farmer raising quail, ducks, and chickens switches to a cheaper feed and she notices that hens lay eggs with thin eggshells that are prone to breaking. Which of the following answer choices would be a first step to resolve this problem. (You can assume that there are no chemical contaminants such as DDT in the feed) Select one: a. Increase cobalt supplementation in the feed b. Increase selenium concentration in the feed c. Increase the appetite of poultry by adding dried ghrelin to the feed d. Increase calcium supplementation in the feed e. Increase free fatty acid (FAA) content of the feed

Answer Human Nutrition  If you consume more protein than you need, the excess amino acids are stored as fat. What is one thing you CAN do to change your body so that your protein stores are greater? Hormones + exercise: Be able to explain the connection between epinephrine and fat. Where is epinephrine secreted? How does epinephrine help a person who has been exercising for longer than 20 minutes continue exercising? Hormones + exercise: Is insulin needed for exercise activity? Does your body make more or less insulin while you exercise? Be able to summarize effects of hormones + exercise: As blood glucose levels drop during exercise, there is less glucose in the blood available to enter cells and provide energy. The body needs to bring glucose into the blood, so glucose can travel to and enter the cell.  What signals the liver and fat cells to release stored energy as glucose? What is the form of that stored energy in the liver? in fat cells? Be able to list the factors that…

The glycemic index is a ranking scale used as an indicator of how high and how fast your blood sugar (blood glucose levels) will rise and then elicit an insulin response. An example of a food with a low glycemic index would be Obeans O white sugar O soda pop (ex.: coke) O fruit drink Question 8 of 61