How do enzymes work to speed up chemical reactions within a cell? They increase the ∆G (change in Gibbs free energy) for a chemical reaction. They lower the ∆G (change in Gibbs free energy) for a chemical reaction. They lower the energy of activation for a chemical reaction. They increase the kinetic energy of molecules to raise the speed of molecular collisions. They bypass the transition state to more quickly form products.

How do enzymes work to speed up chemical reactions within a cell? They increase the ∆G (change in Gibbs free energy) for a chemical reaction. They lower the ∆G (change in Gibbs free energy) for a chemical reaction. They lower the energy of activation for a chemical reaction. They increase the kinetic energy of molecules to raise the speed of molecular collisions. They bypass the transition state to more quickly form products.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter2: Life's Chemical Basis

Section: Chapter Questions

Problem 3SA

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Which of the following statements is a lie? Select one: a. Chemical energy is the energy within chemical bonds. Energy is required for bonds to break while energy is released when bonds form. b. Exergonic chemical reactions release more energy than they absorb and the catabolism of the food in an energy bar serves as an example. c. The many forms of energy used up by cells comes from the breakdown of the chemical energy from the food we digest.
Which of the following statements is NOT true? None of the other four answers (all are true) The energy required to cause a chemical reaction to occur is called the activation energy Decomposition (degradation, catabolic) reactions are usually endergonic Chemical reactions in living cells are catalyzed by enzymes Enzymes increase the probability that a chemical reaction will take place by lowering the activation energy
Why do chemical reactions occur faster at higher temperatures? refers to enzymes.
we get energy from food to do what we need to every day. why is digesting food a chemical change?
Which of the following statements about biomolecules is true? I. Biomolecules are the basis of life. II. Biomolecules are involved in the metabolic processes of all living organisms. III. Biomolecules are inorganic molecules.
What type of chemical reactions are the below 2 reactions? Decomposition or Synthesis? Protein amino acid + amino acid + amino acid ____________________________ Glucose + Glucose Maltose __________________________________
Which of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formation
Enzymes are: [Select all that apply.] -waste products from the chemical reactions they catalyze. -molecules that are a main source of energy for most cells. -molecules that have specific shape that bind specific molecules. -mostly proteins. -molecules that catalyze (speed up) other chemical reactions. -waste products from most cellular chemical reactions.
What happens to a molecule that is reduced during a chemical rxn? a) gains an oxygen b) becomes more positively charged c) loses a H d) gains an electron
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