AP Biology Quiz Organic Macromolecules

2.

Can be used for enery by the cell

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer(s)

A. Carbohydrates
A. Lipids
A. Proteins
A. Nucleic acids

Explanation

Carbohydrates, lipids, proteins, and nucleic acids can all be used for energy by the cell. Carbohydrates are the main source of energy, while lipids can be broken down to release energy. Proteins can be converted into energy when carbohydrates and lipids are not available. Nucleic acids, although not a direct source of energy, can be broken down into their nucleotide components, which can then be used in energy-producing metabolic pathways. Therefore, all of these biomolecules can contribute to the cell's energy needs.

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1

3.

Contain H and O in a 2:1 ratio

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer

A. Carbohydrates

Explanation

Carbohydrates are organic compounds that consist of carbon, hydrogen, and oxygen atoms. They are commonly known as sugars and starches. The key characteristic of carbohydrates is that they contain hydrogen and oxygen atoms in a 2:1 ratio, which means that for every two hydrogen atoms, there is one oxygen atom. This ratio is essential for the formation and structure of carbohydrates. Lipids, proteins, and nucleic acids do not have this specific ratio of hydrogen and oxygen atoms, making carbohydrates the correct answer.

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3

4.

Monomers contain N

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer(s)

A. Proteins
A. Nucleic acids

Explanation

Proteins and nucleic acids are the only two options among the given choices that contain nitrogen (N). Carbohydrates and lipids do not contain nitrogen. Therefore, the correct answer is proteins and nucleic acids.

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5

5.

Monomers do not contain N

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer(s)

A. Carbohydrates
A. Lipids

Explanation

Carbohydrates and lipids are both types of biomolecules that are composed of monomers. However, they do not contain nitrogen (N) in their structure. On the other hand, proteins and nucleic acids are biomolecules that do contain nitrogen in their structure. Therefore, the correct answer is carbohydrates and lipids.

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2

6.

Some of these are inorganic

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer

A. None

Explanation

The given options list different types of biomolecules such as carbohydrates, lipids, proteins, and nucleic acids. These biomolecules are all organic compounds as they contain carbon atoms. However, the statement "some of these are inorganic" suggests that at least one of the options is inorganic. Since all the options listed are organic compounds, the correct answer is "none" as none of them are inorganic.

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7.

C12H22O11

Carbohydrates
Lipids
Proteins
Nucleic acids

Correct Answer

A. Carbohydrates

Explanation

C12H22O11 is the chemical formula for sucrose, which is a type of carbohydrate. Carbohydrates are organic compounds that serve as a major source of energy for the body. They are made up of carbon, hydrogen, and oxygen atoms. Sucrose, commonly known as table sugar, is a disaccharide composed of glucose and fructose molecules. It is commonly found in fruits, vegetables, and processed foods. Therefore, the correct answer is carbohydrates.

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1

8.

Contain carbon, hydrogen and oxygen

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer(s)

A. Carbohydrates
A. Lipids
A. Proteins
A. Nucleic acids

Explanation

Carbohydrates, lipids, proteins, and nucleic acids all contain carbon, hydrogen, and oxygen. Carbohydrates are composed of carbon, hydrogen, and oxygen in a ratio of 1:2:1. Lipids are organic compounds that consist of carbon, hydrogen, and oxygen atoms, although the ratio of these atoms may vary. Proteins are made up of amino acids, which contain carbon, hydrogen, oxygen, and nitrogen. Nucleic acids, such as DNA and RNA, are composed of nucleotides, which contain carbon, hydrogen, oxygen, nitrogen, and phosphorus. Therefore, all four of these biomolecules contain carbon, hydrogen, and oxygen.

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9.

Contain all the elements C,H, O, N, S, and P

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer

A. None

Explanation

None of the listed options contain all the elements C, H, O, N, S, and P. Carbohydrates contain C, H, and O, but not N, S, or P. Lipids contain C, H, and O, but not N, S, or P. Proteins contain C, H, O, N, and S, but not P. Nucleic acids contain C, H, O, N, and P, but not S. Therefore, none of the options fulfill the requirement of containing all the elements C, H, O, N, S, and P.

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1

10.

Examples are glucose, sucrose, and maltose

Carbohydrates
Lipids
Proteins
Nucleic acid
None

Correct Answer

A. Carbohydrates

Explanation

Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen atoms. They are the main source of energy for the body and play a crucial role in various biological processes. Glucose, sucrose, and maltose are all examples of carbohydrates. Glucose is a simple sugar that is used by cells to produce energy. Sucrose is a disaccharide made up of glucose and fructose, commonly found in table sugar. Maltose is another disaccharide made up of two glucose molecules, often found in grains. Therefore, the correct answer is carbohydrates.

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11.

Fats, oils, and waxes

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer

A. Lipids

Explanation

Lipids are a class of organic compounds that include fats, oils, and waxes. They are characterized by their insolubility in water and their solubility in nonpolar solvents. Lipids play various important roles in the body, such as being a major source of energy, serving as structural components of cell membranes, and acting as signaling molecules. Therefore, lipids are the correct answer in this case.

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2

12.

Monomers made of sugar, N-base, and phosphate

Carbohydrates
Lipids
Proteins
Nucleic acid
None

Correct Answer

A. Nucleic acid

Explanation

Nucleic acids are polymers made up of monomers consisting of a sugar, a nitrogenous base, and a phosphate group. This is the correct answer because it accurately describes the composition of nucleic acids. Carbohydrates, lipids, and proteins do not have the same monomer structure as nucleic acids, making them incorrect choices.

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1

13.

Contain glycerol

Carbohydrates
Lipids
Proteins
Nucleic acids
None

Correct Answer

A. Lipids

Explanation

Lipids, specifically fats and oils (triglycerides), contain glycerol as a fundamental component. In these molecules, glycerol forms the backbone to which three fatty acid chains are attached, creating a structure known as a triglyceride. Glycerol is a three-carbon molecule that serves as a critical building block in the formation of these types of lipids. Carbohydrates, proteins, and nucleic acids do not contain glycerol in their structures.

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2

AP Biology Quiz Organic Macromolecules

Deoxyribonucleic acid

Quiz Preview

Can be used for enery by the cell

Contain H and O in a 2:1 ratio

Monomers contain N

Monomers do not contain N

Some of these are inorganic

C12H22O11

Contain carbon, hydrogen and oxygen

Contain all the elements C,H, O, N, S, and P

Examples are glucose, sucrose, and maltose

Fats, oils, and waxes

Monomers made of sugar, N-base, and phosphate

Contain glycerol