Nutrients

Warm-up What is your dream day of eating? Breakfast- Lunch- Dinner- Snacks or deserts-

Stay Lit 37. Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis? A) They swim the same way. B) They eat the same food. C) They live in the same area of the ocean. D) They have similar anatomies. 38. In the winter, the fur of the arctic fox is white. In summer, the fur darkens to a reddish brown. What most likely causes the fur of the fox to change color? A) the amount of sunlight present B) the fox’s habitat C) the fox’s genes D) the fox’s age

Why do we eat? What is the most important requirement for life? Why do our cells need energy? Where does our energy come from?

Warm-up Name the three essential nutrients for our diet. Give 1 example of each.

Stay Lit 58) A strawberry farmer finds that, after a hard freeze, some of his strawberries are still alive. Which best explains why these strawberries were able to survive? A. They have larger leaves to protect the fruit than the other strawberries. B. They have different genetic variations that cause them to be more resistant to cold temperatures. C. They are able to reproduce more quickly than the other strawberries. D. The color of the strawberries is darker, and they maintain their temperature better than other strawberries. 59) Which food provides the most energy for the body in the shortest amount of time? A. potato B. meat C. milk D. fruit

Carbs, Proteins, and Fats YUM What are the 3 basic food nutrients? How many Calories are needed by an average 8th grade student each day? Give an example of a monosaccharide. What is a complex carbohydrate?

Why do you need to eat carbohydrates? What is a lipid? List three roles of lipids. Compare saturated fats to unsaturated fats. List three roles of proteins

What is an essential amino acid? List five protein-rich foods. Why is fish good for you to eat?

Healthy Eating Guidelines Make at least half your daily grain choices whole grains. Examples of whole grains are whole wheat bread, whole wheat pasta, and brown rice. Choose a variety of different vegetables each day. Be sure to include both dark green vegetables, such as spinach and broccoli, and orange vegetables, such as carrots and sweet potatoes. Choose a variety of different fruits each day. Select mainly fresh fruits rather than canned fruits, and whole fruits instead of fruit juices. When choosing oils, choose unsaturated oils, such as olive oil, canola oil, or vegetable oil. Choose low-fat or fat-free milk and other dairy products. For example, select fat-free yogurt and low-fat cheese. For meats, choose fish, chicken, and lean cuts of beef. Also, be sure to include beans, nuts, and seeds.

Create a balanced meal

My Plate 1. Balancing Calories Enjoy your food, but eat less. Avoid oversized portions. 2. Foods to Increase Make half your plate fruits and vegetables. Make at least half your grains whole grains. Switch to fat-free or low-fat (1%) milk. 3. Foods to Reduce Compare sodium in foods like soup, bread, and frozen meals; choose the foods with lower levels. Drink water instead of drinks with high levels of sugar.

Warm-up Name the two types of lipids we encounter. Label one as bad one as good Give an example for each

Stay Lit 39) Which would best allow a species to survive environmental changes? A. similar physical features B. low mutation rate C. small population D. genetic diversity 40) How would smoking tobacco most likely have a negative impact on the ability of an individual to succeed at physical activities? A. It interferes with balance and coordination. B. It decreases the ability to make decisions rapidly. C. It decreases stamina and cardiovascular efficiency. D. It decreases the speed and power of muscle contractions.

Water, Vitamins, Minerals and Fiber Why do we need to drink water? How much water do we need each day? Why do we need vitamins and minerals? What are three good sources of vitamins?

What are three important minerals that the body needs? What are two good sources of minerals? Why is fiber important to our health? What are three good sources of fiber?

The Digestive System List the functions of the digestive system. Release nutrients from the food we eat. Break down food for excretion What parts of the digestive process occur in the mouth? Chemical breakdown of food caused by enzymes Mechanical breakdown of food cause by chewing What is peristalsis? Muscular contractions allowing food to go through the esophagus into the stomach

What is the role of gastric acid? Chemically breakdown food in the stomach What is meant by absorption? Molecules moving from the small intestine into the bloodstream What occurs in the large intestine? Food that is not fully digested moves here Water is reabsorbed into the bloodstream What is the last part of the digestive system? Excretion through fesces.