General Biology 1 Exam Questions

Which of the following is the primary structure of a protein determined by?

• The sequence of amino acids

• The arrangement of beta-sheets

• The presence of alpha helices

• The overall 3D shape of the protein

What type of bond holds the secondary structure of a protein, such as alpha helices and beta-sheets, together?

• Ionic bonds

• Hydrogen bonds

• Disulfide bonds

• Van der Waals forces

What is the process called when a protein loses its functional shape due to changes in temperature or pH?

• Hydrolysis

• Denaturation

• Phosphorylation

• Glycosylation

What is the main function of nucleic acids in cells?

• Store genetic information

• Provide energy for cellular processes

• Catalyze biochemical reactions

• Form cell membranes

What is the main structural difference between glucose and fructose?

• Glucose is a ketose, while fructose is an aldose.

• Glucose has a six-carbon ring, while fructose has a five-carbon ring.

• Glucose and fructose has the same structure and different chemical formula

• Glucose has more hydroxyl groups than fructose.

Which nitrogenous base is found in RNA but not in DNA?

• Adenine

• Thymine

• Uracil

• Guanine

Which component of a nucleotide is responsible for carrying genetic information?

• Phosphate group

• Sugar molecule

• Nitrogenous base

• Ribose

In DNA, which base pairs with cytosine?

• Adenine

• Thymine

• Guanine

• Uracil

Which polysaccharide is used by plants for energy storage and is composed of both amylose and amylopectin?

• Cellulose

• Glycogen

• Starch

• Chitin

What is the main function of triacylglyceride in the body?

• Energy storage

• Hormone production

• Enzyme activity

• DNA synthesis