Enzyme Function, Interactions & Regulation | Baamboozle - Baamboozle

The location of substrate binding is called the

Active Site

Induced Fit

Lactose

Catalyst

Which of the following is NOT true of lactase?

It can break down different sugar substrates besides lactose

It forms an enzyme-substrate complex with lactose

It is an enzyme

Lactose binds in its active site

The change in overall energy of a reaction is

Unchanged with the help of an enzyme

slower with the help of an enzyme

faster with the help of an enzyme

Increased with the help of an enzyme

Enzymes are known as catalysts; this means that they can _____.

Both answers are correct

Lower the activation energy of a reaction

Make a chemical reaction go faster

None of the answers are correct

Which of the following is true about enzymes?

Enzymes lower the activation energy

Enzymes raise the activation energy

Enzymes leave the activation energy the same

Enzymes increase the temperature

What is induced fit?

A change in enzyme shape to bind to a substrate

The barrier to a chemical reaction in the cell

The rise in the free energy in a cell

A chemical reaction in a cell

A non-substrate molecule binds to an enzyme but does not bind at the active site. The enzyme is now unable to bind its substrate. What has likely occurred?

The active site has changed shape

The reaction has been catalyzed.

An activator is bound to the substrate

A competitive inhibitor is bound to the enzyme

An activator could have the following effect on an enzyme:

Increase of reaction rates

Increase in inhibitor binding

Decrease in enzyme function

Inhibition of substrate binding

Which of the following is NOT true of enzyme regulation?

All enzymes are regulated by the same inhibitors

An enzyme can be positively regulated

An enzyme can be negatively regulated

Enzyme regulation ensures control on enzyme function

Competitive inhibition involves an inhibitor

Binding to the active site

Binding away from the location

Recognizing a substrate

Initiating enzyme function

Which of the following is NOT true of a noncompetitive inhibitor?

The inhibitor can bind in the active site

It is possible for a substrate to still bind to the enzyme

The enzyme active site can change shape

The reaction may be completely prevented

What is the main function of an inhibitor?

Disrupt an enzyme's activity

Decrease the rate of reaction

Increase the rate of reaction

Positively regulate an enzyme's activity

Which of the following occur at the point of saturation?

The reaction rate plateau and reaches its maximum

None of the answers are correct

The reaction rate becomes faster

Both answers are correct

Pepsin works optimally in your stomach due to its

Acidic pH

basic pH

low temperature

high temperature

Which of the following would likely NOT increase a reaction rate of an enzyme in your mouth that was not yet at optimal conditions?

extremely high temperature

neutral pH

more substrate

more enzyme

An increase in temperature

Increases the likelihood a enzyme and substrate will collide

Provides shape to an enzyme

Increases substrate concentration

Changes the shape of the substrate

The following conditions can denature an enzyme

extreme temperature and extreme pH

extreme temperature only

increased substrate concentration only

extreme pH and increased substrate concentration

The optimum pH of the enzyme malatase is 6.5. What will happen to this enzyme at a pH of 3.1?

The enzyme will denature and stop working

The enzyme will continue working normally

The enzyme will not suffer any change

None of the answers are correct

An enzyme will reach its saturation point

when no more enzyme is available to work on substrates

when no more substrates are available

when it is at an optimum temperature

when it is at an optimum pH

Many coenzymes are derived from _____.

vitamins

metals

inorganic molecules

All of these answers are correct.

A coenzyme is differentiated from the broader class of cofactors because it is _____.

organic

inorganic

metal

All of these answers are correct.

Iron binds tightly to the heme group in the protein hemoglobin. What type(s) of helper molecule would this be considered?

The process through which food is converted to energy inside

The process through which food enters the cell

The process through which oxygen enters the cell

The process through which oxygen is converted to energy

What type of bond is often formed between prosthetic groups and proteins?

Covalent

Amino acid

Metal

Hydrogen

Which of the following statements is true about cofactors?

All of the answers are correct

Coenzymes are a specific type of cofactor

Cofactors increase the rate of reaction

Cofactors are required for some enzymes to function

Cellular respiration includes a step that converts pyruvate into Acetyl coA. Acetyl coA is also known as Coenzyme A. This implies that Acetyl coA _____.

helps an enzyme perform a function

is bound tightly to the enzyme

is a metal ion

is one of the enzymes performing the function