proteins

Multiple Choice

Which of the following is a primary function of proteins in living organisms?

• Providing energy storage

• Carrying genetic information

• Catalyzing biochemical reactions

• Forming the main component of cell membranes

Open Ended

Why are proteins considered essential molecules for the human body?

Open Ended

What is the relationship between amino acid sequence and the diversity in form and function of proteins?

Open Ended

Explain how pH and temperature can affect the structure of proteins.

Fill in the Blank

The bond that links two amino acids together in a protein is called a ___ bond.

Multiple Choice

Which of the following is NOT a key term related to proteins as listed in the slides?

• Polypeptide

• Denaturation

• Carbohydrate

• Peptide Bond

Multiple Choice

Which of the following statements about amino acids is correct?

• All amino acids have a central alpha carbon atom.

• Amino acids do not contain a carboxyl group.

• The side chain (R group) is always the same in all amino acids.

• Amino acids lack an amine group.

Multiple Select

Which of the following are components of the generalized structure of an amino acid?

• Amine group

• Carboxyl group

• Phosphate group

• Side chain (R group)

Open Ended

Explain how the R group of an amino acid influences its properties and behavior.

Multiple Choice

Which functional groups are present in all twenty amino acids?

• Amine group and carboxylic acid group

• Hydroxyl group and methyl group

• Phosphate group and amine group

• Carboxylic acid group and aldehyde group

Fill in the Blank

A peptide bond forms between the carbon of the carboxylic acid group of one amino acid and the ___ group of the second amino acid.

Multiple Choice

What are the products of the condensation reaction between two amino acids?

• Dipeptide and water

• Polypeptide and oxygen

• Amino acid and carbon dioxide

• Dipeptide and ammonia

Multiple Select

Which of the following statements about the formation of dipeptides are correct?

• Amino acids undergo condensation reactions to form dipeptides.

• Water is produced during the formation of a dipeptide.

• A peptide bond forms between the carboxyl group of one amino acid and the amine group of another.

• Hydrolysis is required to form a dipeptide.

Open Ended

Describe the process by which genes on DNA ultimately determine the structure of a protein.

Multiple Choice

Which of the following statements best explains why there is an infinite variety of possible peptide chains?

• There are 20 amino acids that can be arranged in any order and in chains of any length.

• There are only a few amino acids and they must be in a specific order.

• Peptide chains are always made of the same sequence of amino acids.

• Amino acids can only be arranged in pairs.

Fill in the Blank

A conformational change in the shape of a protein that results in the loss of its function is called ___.

Multiple Choice

What determines the function of a protein?

• Its specific shape

• The number of peptide bonds

• The amount of water present

• The temperature of the environment

Multiple Select

Which of the following can cause protein denaturation?

• Extreme changes in pH

• Extreme changes in temperature

• Addition of water

• Exposure to light

Open Ended

Explain the difference between essential and non-essential amino acids and why this distinction is important for human health.

Fill in the Blank

Proteins are made up of smaller units called ___.

Open Ended

What is one question you still have about proteins after today's lesson?