Chapter 4- Chemical Composition Of The Cell

Organic compounds are compounds that contain ...

• Nitrogen

• Hydrogen

• Sulphur

• Carbon

In a carbohydrate, the ratio of carbon (C) to hydrogen (H) to oxygen (O) atoms is:

• 3:1:1

• 1:2:1

• 1:3:1

• 2:1:1

Which of the following is not a monosaccharide?

• Fructose

• Lactose

• Galactose

• Glucose

Sucrose is a _____ sugar.

• non-reducing

• reducing

What is the composition of a basic unit of fat?

• One molecule of glycerol and three molecules of fatty acid

• One molecule of fatty acid and three molecules of glyerol

• One molecule of glycerol and one molecule of fatty acid

• Three molecules of fatty acid and three molecules of glycerol

Both butter and olive oil are made up of fats. In room temperature, butter exists as a solid while olive oil is a liquid. Why?

• Butter is a nonpolar molecule and olive oil is a polar molecule.

• Butter is an unsaturated fat and olive oil is a saturated fat.

• Butter is a saturated fat and olive oil is an unsaturated fat.

• Butter is a polar molecule and olive oil is a nonpolar molecule.

Question 8 out of 10:

The repeating units in both DNA and RNA are known as ____

• hydrogen bonds

• nucleotides

• amino acids

• nucleic acids

Which of the following nucleotide base exist in RNA but not in DNA?

• Uracil (U)

• Cytosine (C)

• Thymine (T)

• Adenine (A)

The double helix structure of DNA allows it to ___

• look better

• move around cells

• stores genetic material in all viruses

• serve as a template for its own replication

Which of the following substances acts as a medium for biochemical reaction in a cell?

• Glucose

• Amino Acid

• Water

• Lipid