Question

chapter 2 & 3: calories

1. what is the main function of calories in our bodies?

a) build muscle
b) provide energy
c) store fat
d) regulate body temperature

1. fill in the blank:

the body uses ______ calories per gram of protein.

1. true or false:

consuming too few calories consistently can lead to decreased energy and potential muscle loss.

1. how many calories are in one gram of fat?

a) 4 calories
b) 7 calories
c) 9 calories
d) 10 calories

1. what happens if you consistently consume more calories than your body needs?

a) the body stores the excess as muscle
b) the body burns the excess for immediate energy
c) the excess is stored as fat
d) the body converts excess calories into protein

Explanation:

Question 1

Calories are units of energy. The body uses calories from food to power its functions. Building muscle (A) is done by protein and exercise, storing fat (C) is for excess calories, and regulating temperature (D) is a body function not the main role of calories. So the main function is to provide energy.

The body uses 4 calories per gram of protein (same as carbohydrates; fat has more). This is a standard nutritional fact.

If calorie intake is too low, the body doesn't have enough energy and may break down muscle for fuel, leading to muscle loss and low energy. So the statement is true.

Answer:

B) Provide energy

Question 2