Question

test: organic compounds

1. all organic compounds contain

a. oxygen b. nitrogen c. carbon d. amino acids

1. carbohydrates are made out of smaller molecules (monomers) known as

a. glucose b. amino acids c. monosaccharides d. polysaccharides

1. carbohydrates are composed of the following:

a. carbon, oxygen and hydrogen in a 1:2:1 ratio
b. carbon, hydrogen and oxygen in a 1:1:1 ratio
c. carbon and hydrogen in a 1:2 ratio
d. carbon, hydrogen and oxygen in a 1:3:1 ratio

1. carbohydrates are most prevalently found in food groups such as

a. meats b. fruits and grains c. fish and poultry d. none of the above

1. examples of lipids are:

a. cholesterol and waxes b. sugar c. dna d. enzymes

1. lipids that have double bonds in their structure are known as:

a. saturated fats b. unsaturated fats c. steroid d. polysaccharides

1. is the following statement true or false? bubble in or write an \a\ for true or a \b\ for false.

lipids are non - soluble (meaning they do not mix) with water.

1. proteins are made out of smaller molecules known as:

a. monosaccharides b. amino acids c. nucleic acids d. lipids

1. protein functions bases depend on the ______ of the protein.

a. shape b. solubility c. size d. activation energy
for numbers 10 - 13, find the best match to describe the function of each organic compound:

1. proteins
2. nucleic acids
3. lipids
4. carbohydrates

a. organic compound that helps build bone and muscle.
b. organic compound that stores genetic information.
c. organic compound that is essential for hormone development.
d. organic compound that can serve as a quick source of energy.

1. enzymes

a. are usually carbohydrates
b. can only catalyze (speed up) a reaction once.
c. eliminate the activation energy of chemical reactions.
d. reduce the activation energy of chemical reactions.

Explanation:

1. Organic compounds contain carbon.
2. Carbohydrates are made of monosaccharides.
3. Carbohydrates have carbon, hydrogen and oxygen in a 1:2:1 ratio.
4. Carbohydrates are found in fruits and grains.
5. Cholesterol and waxes are lipids.
6. Fats with double - bonds are unsaturated fats.
7. Lipids are non - soluble in water (true).
8. Proteins are made of amino acids.
9. Protein functions depend on shape.
10. Proteins help build bone and muscle (B).
11. Nucleic acids store genetic information (C).
12. Lipids are essential for hormone development (D).
13. Carbohydrates are a quick energy source (A).
14. Enzymes reduce the activation energy of chemical reactions (d).

Answer:

1. c. carbon
2. c. monosaccharides
3. c. carbon, hydrogen and oxygen in a 1:2:1 ratio
4. b. fruits and grains
5. a. Cholesterol and waxes
6. b. unsaturated fats
7. A (TRUE)
8. b. amino acids
9. a. shape
10. B. Organic compound that helps build bone and muscle
11. C. Organic compound that stores genetic information
12. D. Organic compound that is essential for hormone development
13. A. Organic compound that can serve as a quick source of energy
14. d. reduce the activation energy of chemical reactions