What is the minimum amount of energy required to start a chemical reaction?   A. Activation energy   B. Net energy input   C. Potential energy

Some exergonic chemical reactions that proceed slowly in the outside world proceed quickly in the human body. This is primarily because Select one: a. Body temperature is higher than outside temperature. b. Humans have enzymes that lower the activation energy of a chemical reaction. c. Humans have enzymes that increase the amount of energy released by a chemical reaction. d. All of the above

is this question true or false

How is the activity of enzymes in biological reactions similar to machines that build cars

Explain how enzymes work to speed up reactions

explain how measuring the effect of temperature on enzyme activity will be different from measuring the effect of enzyme concentration on enzyme activity.

How can thermodynamically unfavorable reactions, such as the synthesis of DNA and protein polymers, occur in cells? A. Cells couple thermodynamically unfavorable reactions to reactions that result in a positive change in enthalpy. B. Cells couple thermodynamically unfavorable reactions to reactions that release energy. C. Cells couple thermodynamically unfavorable reactions to reactions that have a positive free energy. D. Cells couple thermodynamically unfavorable reactions to reactions that result in a decrease in entropy.

Describe how enzymes function; be sure to include information about energy use in your answer.

The substrate of an enzyme is? A. an organic accessory molecule B. The molecole(s) released at the end of an enzyme-facilitated reaction. C. The shape of the enzyme D. One of the amino acids that makes up the enzyme E. What the enzyme acts on.

How do enzymes affect the activation energy of a reaction?   Question 28 options:   decrease it   increase it   don't affect it