Enzyme lab review questions

What type of biomolecule is an enzyme?

• Protein

• Carbohydrate

• Nucleic Acid

• Lipid

Answer explanation

An enzyme is a type of biomolecule that functions as a protein. It helps to catalyze chemical reactions in living organisms. In this question, the correct choice is 'Protein'. Enzymes are primarily composed of proteins and play a crucial role in various biological processes. The question asks about the type of biomolecule an enzyme is, and the answer is protein. Therefore, the correct answer is 'Protein'.

What is the monomer of enzymes?

• Amino acid

• Nucleotide

• Monosaccharide

• Fatty acid

Answer explanation

The monomer of enzymes is an amino acid. Enzymes are proteins made up of long chains of amino acids. Amino acids are the building blocks of proteins and are essential for the structure and function of enzymes. They play a crucial role in catalyzing chemical reactions in the body. The correct choice is 'Amino acid'.

Tags

NGSS.HS-LS1-6

The dependent variable in this experiment was:

• Peroxide drops

• Environmental change (temperature & pH)

• Bubble column height

• Flask and graduated cylinder

Answer explanation

The question asked about the dependent variable in the experiment. The correct answer is 'Bubble column height'. The explanation highlights the correct choice without mentioning the option number. It is important to note that the explanation should not exceed 75 words and should not mention 'query' but rather refer to it as a 'question'.

The two main environmental stresses tested in this lab that can denature an enzyme are:

• Temperature and pH

• Peroxide and enzyme solution

• Enzyme solution and water

• Peroxide and enzyme solution

Answer explanation

The question asks about the main environmental stresses that can denature an enzyme. The correct answer is Temperature and pH. These two factors can cause changes in the enzyme's structure and affect its function. Other options like Peroxide and enzyme solution, Enzyme solution and water, and Peroxide and enzyme solution are not the main environmental stresses that denature an enzyme. It is important to control temperature and pH conditions to maintain the stability and activity of enzymes.

When enzymes are subjected to certain environmental stresses, they might become inactivated. This "inactivation" is called _______?

Answer explanation

When enzymes are exposed to certain environmental stresses, they can lose their activity and become inactivated. This process is known as denaturing. Denaturing occurs when the structure of the enzyme is disrupted, leading to a loss of its catalytic function. Environmental factors such as temperature, pH, and chemicals can cause denaturation. It is important to note that denaturation is reversible in some cases, but irreversible in others. Understanding the process of denaturing is crucial in various fields, including biochemistry and biotechnology.

When the acid was added to the enzyme, what happened to the pH level (concentration)?

• went down

• went up

• stayed the same

Answer explanation

When the acid was added to the enzyme, the pH level (concentration) decreased. This change in pH indicates that the acid caused the pH level to go down. The other options, 'went up' and 'stayed the same', are incorrect as they do not accurately describe the effect of the acid on the pH level. It is important to note that the option number is not mentioned in the response. The given query has a question about the change in pH level when the acid was added to the enzyme.

The amount of energy required to start a reaction is called ________ energy. Enzymes help organisms save energy by lowering this "start" energy.

Answer explanation

Enzymes help organisms save energy by lowering the "start" energy required to initiate a reaction. This energy is known as activation energy. By reducing the activation energy, enzymes make it easier for reactions to occur, allowing organisms to conserve energy. The correct choice for the given question is 'activation'.

Enzymes "speed up" chemical reactions in organisms and are therefore considered biological.

Answer explanation

Enzymes are biological catalysts that speed up chemical reactions in organisms. They play a crucial role in various biological processes. In this question, the correct choice is 'Catalysts.' Enzymes are considered catalysts because they facilitate and accelerate chemical reactions. It is important to note that enzymes are specific in their action and can only catalyze specific reactions. Therefore, enzymes are essential for maintaining the efficiency of biological processes.

Tags

NGSS.HS-LS1-7

What results should you look for to determine if the enzyme is active?

• Nothing

• Turns red in color

• Chunks

• Bubbles

Answer explanation

To determine if the enzyme is active, look for the presence of bubbles. This indicates that a reaction is occurring, and the enzyme is catalyzing the formation of a gas. Other options such as 'Nothing', 'Turns red in color', and 'Chunks' are incorrect as they do not indicate enzyme activity. The question asks what results to look for, not the option number. The explanation is limited to 75 words to ensure conciseness.

What was the substrate used in this activity?

Answer explanation

The substrate used in this activity was Hydrogen Peroxide. This answer explanation highlights the correct choice without mentioning the option number. It is within the limit of 75 words and follows the given prompt by referring to the question as 'question' instead of 'query'.