BIOMOLECULES

What macromolecule is responsible for cell membrane and energy storage?

• carbohydrates

• nucleic acid

• lipid

• protein

Carbohydrates provide energy to the body. These are usually found in ___________.

• Waxes

• Starches

• Proteins

• Nucleotides

Disaccharides are double sugars. Which one is not a disaccharide?

• maltose

• sucrose

• galactose

• lactose

It is the sweetest sugar and usually found in most fruits.

• Lactose

• Fructose

• Galactose

• Maltose

A nucleotide structure always has three components: a five-carbon sugar molecule, a molecule of nitrogen-containing base, and a molecule of_________.

• sulfate(SO42-)

• carbonate (CO22-)

• phosphate (PO43-)

• nitrate (NO3-)

DNA can be used to produce RNA. This RNA can be used to create __________.

• Fats

• Carbohydrates

• Proteins

• None of the above

Which of the following elements is not present in carbohydrates?

• carbon

• nitrogen

• hydrogen

• oxygen

The sugar in RNA is ______________________, the sugar in DNA is____________.

• deoxyribose, ribose

• ribose, deoxyribose

• ribose, phosphate

• ribose, uracil

Nutritional chemists have found that burning 1 gram of fat releases twice the amount of heat energy as burning 1 gram of starch. Based on this information, which type of biomolecule would cause a person to gain more weight?

• carbohydrate

• proteins

• fat

• nucleic

Which of the following macromolecule contains carbon, nitrogen, oxygen, phosphorus and hydrogen in its structure?

• carbohydrate

• nucleic acid

• lipid

• protein