Question

13 multiple choice 1 point students performed an experiment to determine how enzyme activity differs with concentration. they used different volumes of potato, which naturally contain the enzyme catalase, placed in hydrogen peroxide and measured the height of the bubbles produced as oxygen was released. they performed the experiment 3 times, all at the same temperature. the averaged results are shown in the table. table with columns: test tube, enzyme: potato (cm³), water (cm³), substrate: hydrogen peroxide (cm³), total volume (cm³), average bubble height (cm) what conclusion can be drawn from this data? higher enzyme concentration increases the reaction rate temperature is not important in enzyme reactions enzymes are specific 14 multiple choice 1 point which statement describes the structure of lipids? composed of single or double strands of nucleotides composed of a glycerol molecule bonded to fatty acid molecules composed of long chains of amino acids 15 multiple choice 1 point which example best represents the ability of carbohydrates to serve as structural components? the rigid cell wall of green plants is composed of cellulose the muscles of animals are held together by connective tissues the roots of many plants store starches produced by the plant 16 multiple choice 1 point in organisms, macromolecules are made up of subunits. which of these pairs correctly describes how a macromolecule is constructed? nucleic acids are made up of dna amino acids are made up of protein protein is made up of amino acids 17 multiple choice 1 point the specificity of an enzyme to its substrate is often compared to a lock and key. image of enzyme given the enzyme shown, which would be the correct substrate? three images of possible substrates 18 multiple choice 1 point which organic molecule carries the hereditary information for cells? lipid nucleic acid carbohydrate

Explanation:

• Question 13: As the volume of potato (enzyme - catalase) increases, the average bubble height increases, indicating a higher reaction rate with higher enzyme concentration.
• Question 14: Lipids are composed of a glycerol molecule bonded to fatty - acid molecules. Nucleotides form nucleic acids and long chains of amino acids form proteins.
• Question 15: Cellulose in the rigid cell wall of green plants is a carbohydrate and serves as a structural component. Muscles are related to proteins and starch storage is a function of carbohydrates but not a structural one in the context of this question.
• Question 16: Proteins are made up of amino acids. Nucleic acids are made up of nucleotides, not just DNA. Amino acids are the building blocks of proteins, not the other way around.
• Question 17: According to the lock - and - key model, the substrate fits into the enzyme's active site. The correct substrate will have a shape that complements the enzyme's active site.
• Question 18: Nucleic acids (DNA and RNA) carry the hereditary information for cells. Lipids are for energy storage and membrane formation, and carbohydrates are for energy and structure.

Answer:

1. Higher enzyme concentration increases the reaction rate
2. composed of a glycerol molecule bonded to fatty acid molecules
3. The rigid cell wall of green plants is composed of cellulose
4. Protein is made up of amino acids
5. (The option with the shape that fits the enzyme's active - site in the diagram)
6. nucleic acid