Explain how enzymes increase the speed of chemical reactions.

Compounds that are similar in shape to an enzyme's substrate that compete with the substrate molecules by binding to the active site of an enzyme are said to be _______________.

Which statement about enzymes is NOT true?

a) Enzymes speed up chemical reactions during which their structure and chemical composition are altered.

b) Enzymes provide pocket or grove sites in their three dimensional structures where substrates can bind.

c) Active sites alter their initial shape to match the structural shape of a substrate after it binds to the site.

d) Enzymes dramatically increase the rate of a chemical reaction, but they cannot cause a nonspontaneous reaction to happen

Which of these statements concerning enzymes is correct?

a. Enzymes increase the rate of reactions but are permanently changed as a result.

b. Enzymes are proteins that function as catalysts.

c. Enzymes increase the activation energy requirement for a reaction to occur.

d. Enzymes usually can only double the rate of a chemical reaction.

e. Enzymes increase the kinetic energy of the reactants.

Enzymes _____ the speed of chemical reactions in the body.

A. decrease
B. increase
C. both A and B, depending on the type of enzyme
D. none of the above

$$\textbf {\color{#19804f}{ Describe}}\text{ how enzymes increase the speed of chemical reactions.}$$

$\text{\red{Explain}}$ how enzymes work, including the role of the active site.

What do enzymes do?____________________________________

Transcription and translation take place in the ________ and ________, respectively. a. nucleus; cytoplasm b. nucleolus; nucleus c. nucleolus; cytoplasm d. cytoplasm; nucleus

Define the various terminologies used to describe the joint position, movements, and relationships.

Which of the following statements is a correct distinction between cyclic and noncyclic photophosphorylation?

A. only noncyclic photophosphorylation produces ATP.

B. only cyclic photophosphorylation utilizes light at 700 nm.

C. only noncyclic photophosphorylation can operate in the absence of photosystem.

D. in addition to ATP, cyclic photophosphorylation also produces O2 and NADPH.

How does active transport differ from passive transport?

What is the energy from electrons used in oxidative phosphorylation?

In oxidative phosphorylation, electrons released by NADH are ultimately transferred to?