Biomolecules

1. Carbohydrates are more easily metabolized than lipids. However, on a gram-for-gram basis, lipids provide cells with more –

• Nitrogen

• Energy

• Structure

• Proteins

Although carbohydrates and lipids provide a similar function for cells, how can these organic compounds be differentiated?

• Carbohydrates provide quick energy, while lipids provide long-term energy storage

• Carbohydrates form long chains of sugar, while lipids are single fatty acid molecules

• Carbohydrates provide long-term energy storage, while lipids provide quick energy

• Carbohydrates are single sugar molecules, while lipids are long chains of fatty acids

How are protein and nucleic acid functions interconnected

• Proteins direct the production of nucleic acids in an organism

• Nucleic acids direct protein synthesis in an organism

• Nucleic acids store energy for later use during protein synthesis in an organism

• Proteins provide long-term energy needed to synthesize nucleic acids

The surfaces of the leaves of many plants help reduce water loss because they are not water-permeable. Which class of biomolecule coats the leaves of plants?

• Carbohydrate

• Lipid

• Nucleic Acids

• Protein

________ are primary components of cell membranes while ________ are a class of biomolecules that provide structural components for animal tissues such as hair and fingernails.

• Carbohydrates; proteins

• Lipids; carbohydrates

• Lipids; proteins

Mr. McAdams just finished an exhausting workout. Which of the following carbohydrates can be readily used by his body as a source of fuel?

• Glucose

• Cellulose

• Glcogen

• Starch

All of the following places a function with the correct biomolecule EXCEPT

• Nucleic acid – carry instructions to make proteins

• Lipid – primary component of cell membranes

• Protein – store and transmit hereditary information

• Carbohydrate – source of primary energy

Four different nucleotides are used as building blocks of DNA. Which of the following can be used to distinguish one nucleotide from another

• The nitrogenous base

• The shape of the deoxyribose sugar

• The length of the phosphate group

• The type of fatty acid

Number 1 is

• Deoxyribose sugar

• Phosphate

• Hydrogen bond

• Nucleic acid

Number 2 is a/an:

• Deoxyribose sugar

• Nitrogen bases

• Hydrogen bond

• Nucleic acid