Question

bio 105 exam 2
please write your name on the scantron sheet. each question has only one correct answer. take a deep breath. do not rush through this exam. good luck.

1. macronutrients are:

a. nutrients that are large in terms of molecular structure.
b. nutrients that our body cant make.
c. nutrients that our body needs in large amounts.
d. molecules that include proteins, carbohydrates, and nucleic acids.

1. macronutrients provided by food include:

a. proteins, fats, sugars, and minerals.
b. proteins, fats, and nucleic acids.
c. proteins, carbohydrates, and sugars.
d. proteins, carbohydrates, and fats.

1. which of these is an organic molecule that is not considered a macronutrient?

a. nucleic acids
b. proteins
c. fats
d. lipids

1. grains, including bread, rice, and pasta, are a rich source of:

a. fats.
b. proteins.
c. nucleic acids.
d. carbohydrates.

1. another term for vitamins and minerals is \micronutrients,\ because they are:

a. very small compared to other molecules in the body.
b. only needed in small amounts by our bodies.
c. used by very few reactions in the body.
d. not very nutritionally dense.

1. which of these will be broken down into amino acids by the digestive system?

a. fats
b. nucleic acids
c. carbohydrates
d. proteins

Explanation:

1. Macronutrients are nutrients our body needs in large amounts.
2. Macronutrients provided by food are proteins, carbohydrates, and fats.
3. Nucleic acids are not macronutrients among the options. Proteins, fats (lipids are a type of fat) are macronutrients.
4. Grains are rich in carbohydrates.
5. Vitamins and minerals are micronutrients as they are only needed in small amounts by our bodies.
6. Proteins are broken - down into amino acids by the digestive system.

Answer:

1. d
2. d
3. a
4. d
5. b
6. d