Nutrition and Fitness exam 1

what is a nutrient that does not supply energy to the body?

vitamin D

What is a standard that can help you compare nutritional contents of packaged foods to make more healthful choices?

% DVs (daily values)

According to the 2015-2020 Dietary Guidelines for Americans, saturated fat intake should be limited to less than _____% of total daily calories.

10

Most biochemical reactions occur in the pH range of

6 to 8

The substrate of an enzyme binds to the

active site

Derek takes protein supplements before and after his workouts. He told his workout partner that he became 200% stronger within a couple of months after he added the supplements to his diet. His report about the effects of the supplements is an example of a(n)

anecdote

Macromolecules such as proteins are held together by

covalent bonds

A tentative solution to a problem is a(n)

hypothesis

Your food intake on a daily basis affects your health because

improper balance of nutrients over time can lead to chronic diseases in the future.

The breakdown of substances in the cell is a function of the

lysosome

Cells that produce a lot of energy (ATP) will most likely have a lot of

mitochondria

whats an example of a strong base?

pH 13

Food guides usually classify sunflower and other seeds in the _____ group.

protein

An atom has the same number of

protons and electrons

What is a lifestyle choices that is the primary cause of most preventable cancer deaths in the United States?

smoking cigarettes

The purpose of an enzyme is to

speed up chemical reactions