Unit 3 Concept 1 & 2 Review
Quiz by Catherine Tate
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34 questions
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- Q1Which of the following is true about enzymes?They store genetic informationThey speed up chemical reactionsThey produce energy in cellsThey transport oxygen in the blood30s
- Q2Which of the following is NOT a characteristic of enzymes?They are specific in their actionThey are used up in the reactionThey work under specific temperature and pH conditionsThey speed up chemical reactions30s
- Q3What is the primary function of enzymes in living organisms?To catalyze chemical reactionsTo store genetic informationTo transport nutrientsTo provide structural support30s
- Q4Which of the following factors can affect enzyme activity?Temperature and pHBlood type and geneticsExercise and dietAmount of sunlight and rainfall30s
- Q5What is the main function of enzymes in digestion?To regulate body temperatureTo break down macromolecules into smaller moleculesTo absorb nutrients from the bloodstreamTo produce hormones and enzymes30s
- Q6Which of the following is an example of an enzyme?ChlorophyllAmylaseInsulinHemoglobin30s
- Q7Which of the following best describes the role of enzymes in metabolism?They provide structural support to cellsThey transmit genetic informationThey regulate and facilitate metabolic reactionsThey act as energy storage molecules30s
- Q8Which of the following is true about the structure of enzymes?Enzymes are carbohydrates that store energy.Enzymes are lipids that participate in metabolic reactions.Enzymes are DNA molecules that aid in cell division.Enzymes are proteins that act as catalysts in biological reactions.30s
- Q9Which of the following is true about enzyme specificity?Enzymes exhibit high specificity for their substrates.Enzymes have no preference for specific substrates.Enzymes can bind to multiple substrates simultaneously.Enzymes can catalyze any chemical reaction.30s
- Q10What is the active site of an enzyme?The active site is a region of the enzyme where the substrate binds and undergoes catalysis.The active site is a region of the enzyme that aids in enzyme transport.The active site is a region of the enzyme where cofactors are located.The active site is a region of the enzyme that provides structural stability.30s
- Q11What is the function of coenzymes in enzyme-catalyzed reactions?Coenzymes break down substrates into products.Coenzymes assist enzymes by transferring chemical groups or electrons in reactions.Coenzymes provide structural stability to enzymes.Coenzymes inhibit enzyme activity.30s
- Q12Which of the following is true about enzyme inhibition?Enzyme inhibition only occurs in the presence of cofactors.Enzyme inhibition always leads to enzyme activation.Enzyme inhibition can be reversible or irreversible.Enzyme inhibition only affects the shape of the enzyme.30s
- Q13Which of the following is a correct description of the structure of ATP?A lipoprotein with three peptide chains attached.A nitrogenous base with three phosphate groups attached to a ribose sugar.A trimeric protein with three nucleotide subunits.A disaccharide with three phosphate groups attached.30s
- Q14What is the primary function of ATP in cells?To transport molecules across the cell membrane.To provide energy for cellular processes.To store genetic information.To facilitate cell division.30s
- Q15Which molecule is the primary energy source for cellular activities?GlucoseDNA (Deoxyribonucleic Acid)ATP (Adenosine Triphosphate)RNA (Ribonucleic Acid)30s