What are good questions to ask about enzymes?

Enzymes – Edexcel test questions – Edexcel

• What affect does extremely high pH have on enzymes?
• What does the term optimum mean for enzyme temperature?
• What type of enzymes break down carbohydrates?
• What type of enzymes break down fats?
• What type of enzymes break down proteins?
• What type of enzyme is amylase?

What enzymes break down substances?

Some of the most common digestive enzymes are: Carbohydrase breaks down carbohydrates into sugars. Lipase breaks down fats into fatty acids. Protease breaks down protein into amino acids.

How do enzymes breakdown molecules?

To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. These molecules are the enzyme’s substrates. In some reactions, one substrate is broken down into multiple products. The reaction then occurs, converting the substrate into products and forming an enzyme products complex.

What 3 things can denature enzymes?

Enzyme activity can be affected by a variety of factors, such as temperature, pH, and concentration.

What type of enzymes break down proteins?

protease enzymes break down proteins into amino acids. lipase enzymes break down lipids (fats and oils) into fatty acids and glycerol.

What type of enzymes break down fats?

lipase, any of a group of fat-splitting enzymes found in the blood, gastric juices, pancreatic secretions, intestinal juices, and adipose tissues. Lipases hydrolyze triglycerides (fats) into their component fatty acid and glycerol molecules.

How does an enzyme recognize its substrate?

How does an enzyme recognize its substrate? The shape of the active site on the enzyme fits with the substrate. The factors that affect the speed of an enzyme-controlled reaction are the number of enzymes and substrate molecules in the cell.

How do pH levels affect enzymes?

Enzymes are also sensitive to pH . Changing the pH of its surroundings will also change the shape of the active site of an enzyme. This contributes to the folding of the enzyme molecule, its shape, and the shape of the active site. Changing the pH will affect the charges on the amino acid molecules.

Can enzymes change primary?

I know this question could have been done through process of elimination, but it is bugging me that enzymes are considered unable to alter substrate primary structure. Hydrolases cleave bonds, and that truncates primary structure, aminotransferases make different amino acids from substrates given.

Why do enzymes denature?

As the temperature rises, reacting molecules have more and more kinetic energy. Above this temperature the enzyme structure begins to break down (denature) since at higher temperatures intra- and intermolecular bonds are broken as the enzyme molecules gain even more kinetic energy.

How do you calculate the rate of an enzyme-catalysed reaction?

You may also be asked to draw, label or interpret graphs about enzyme experiments. You can calculate the rate of an enzyme –catalysed reaction in two ways: • By measuring the rate at which the substrate disappears • By measuring the rate at which products form Both of these approaches can come up in questions.

What determines the shape of an enzyme?

And then join them up with a few words in between: Enzymes have an active site. Its complex 3D shape is determined by the tertiary structure of the protein. The substrate has a complementary shape and this means that and only that substrate can be acted upon by the enzyme.

How long should the enzyme and substrate be mixed before incubation?

A test tube containing the enzyme and a test tube containing the substrate were incubated separately at each of the temperatures being investigated. After 5 mins, they were mixed and the rate of reaction was determined. The experiment was repeated but this time the enzyme and substrate were left for 60 mins before they were mixed.

What is the mechanism by which enzyme and substrate bind?

The mechanism by which enzyme and substrate bind is called induced fit This would get maximum marks. Don’t waffle and don’t say the same thing twice. It is certain that there will be a question about enzyme activity in your exams!