which curve shows the course of the reaction in the presence of an enzyme

Full Answer

How do enzymes affect the course of a reaction?

I found the attached image on the internet and it really helps complete this exercise. In the presence of an enzyme, the course of the reaction is shown by the red curve. The necessary energy to make a reaction occur is less when there is an enzyme to help the reaction happen.

What are the three true statements about enzymes?

red curve; line b Use the graph and your knowledge of enzymes to identify the three true statements about enzymes. 1) Enzymes lower the overall energy input needed for a reaction to occur. 2) Reactants cannot convert to products without an initial input of energy to start the reaction.

What is the activation energy of an enzyme?

The activation energy is represented by line B. The activation energy is the energy needed to be available for a reaction to happen. If we compare it with line A, which represents the activation energy necessary for a reaction without an enzyme, we can see how much less energy is necessary to dispend when an enzyme is part of the reaction.

How do enzymes enable metabolism to occur?

Enzymes enable metabolism to occur by reducing the amount of activation energy required to break the bonds of reactant molecules. Calories are units of __________. energy

What does an enzyme do to the energy curve of a reaction?

Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.

Which of the following is changed by the presence of an enzyme in a reaction?

Which of the following is changed by the presence of an enzyme in a reaction? The activation energy. (An enzyme lowers the amount of energy required to get the reactants to the transition state.)

At what site on the enzyme are reactants brought together during a chemical reaction?

the active siteEnzymes bring reactants together so they don't have to expend energy moving about until they collide at random. Enzymes bind both reactant molecules (called the substrate), tightly and specifically, at a site on the enzyme molecule called the active site (Figurebelow).

What are three true statements about enzymes?

(1) Enzymes may change shape when they bind substrates; (2) Enzymes provide no energy for the reaction, except collision energy; (3) Enzymes may release substrates.

What is it called when an enzyme's shape is changed?

The simple answer to it is yes. Enzymes modify their shape to bind with their substrates. The process wherein the enzymes change their shape is called as induced fit. It is the precision aligning of enzymes essential for catalytic activity which is caused by the binding of the substrate as enzymes possess active sites.

Which of the following best describes the relationship between the shape of enzymes and the reactions they catalyze?

Which of the following best describes the relationship between the shape of enzymes and the reactions they catalyze? The shape of an enzyme depends on the reaction that it needs to catalyze. Enzymes with more active sites can catalyze several reactions at once.

Why is the shape of the active site important?

Only molecules with exactly the right shape will bind to the enzyme and react. These are the reactant, or substrate, molecules. The part of the enzyme to which the reactant binds is called the active site. This is a very specific shape and the most important part of the enzyme.

What are the reactants in an enzymatic reaction called?

The chemical reactants to which an enzyme binds are called the enzyme's substrates. There may be one or more substrates, depending on the particular chemical reaction. In some reactions, a single reactant substrate is broken down into multiple products.

What is the active site in an enzyme?

The part of the enzyme where the substrate binds is called the active site (since that's where the catalytic “action” happens). A substrate enters the active site of the enzyme.

What do the two axes represent in the graph of an enzymatic reaction given below?

X-axis always represents temperature or pH and Y axis represents enzyme activity.

Which of the following statement is correct about enzymes?

So, the correct answer is 'They are all proteins except ribozymes.

Which are methods to measure the activity of an enzyme?

The methods used for measuring enzymatic activities include spectrophotometry, fluorescence, and radiolabeling. The enzymatic assay can be direct or indirect; where, in the case of direct assay substrate is added to the soil system and the end product formed is determined.

Why do enzymes help in chemical reactions?

1) Enzymes lower the overall energy input needed for a reaction to occur. 2) Reactants cannot convert to products without an initial input of energy to start the reaction. 3) By binding to reactant molecules, enzymes make it easier for the bonds in the molecules to break apart. For a chemical reaction to begin, ...

How does water cross the plasma membrane?

Water can cross the plasma membrane through the process of facilitated diffusion. However, water molecules can also cross the lipid bilayer directly. The sodium-potassium pump uses energy from ATP to move sodium ions out of the cell, and potassium ions into the cell. This is an example of.

What is the pump that moves ions across the plasma membrane?

The sodium-potassium pump moves ions across the plasma membrane against their concentration gradients. This requires energy and is an example of active transport. The plasma membrane forms a pocket that pinches inward, forming a vesicle that contains material from outside the cell. This describes the process of.