Enzyme review questions What is an enzyme What

Enzyme review questions

What is an enzyme?

What is a catalyst? How are enzymes related to catalysts?

What is activation energy?

Where is the active site on an enzyme? How is related to substrates?

Enzyme structure Active site Substrate Enzyme

Lock and Key Model Enzymes show specificity, that is they are selective.

Can enzymes carry out more than one reaction? Why or why not?

True or False: Enzymes can be used over and over again.

sucrase Sucrose + water glucose + fructose In the following reaction, identify the reactants, products, enzyme and substrate

sucrase Sucrose + water glucose + fructose Is the enzyme sucrase considered a reactant, a product, or neither?

sucrase Sucrose + water glucose + fructose What will happen to the enzyme sucrase at the end of the reaction?

#1 #2 What does the black arrow (#1) represent? What does the red arrow (#2) represent?

#1 #2 What does the black curve represent? What does the red curve represent?

Changes in some environmental factors, such as changes in ____ or increases in _______, can disrupt the three-dimensional shape of enzymes

A protein (enzyme) that has changed shape due to changes in environmental variables is described as __________

What happens when an enzyme is “denatured”? How is the active site affected?

What does hydrolysis mean? Is it the term used to describe a polymer being built or broken down?

sucrase Sucrose + water glucose + fructose What is the overall effect of an enzyme (sucrase) on the rate of sucrose hydrolysis?

sucrase Sucrose + water glucose + fructose What trend would you see as a result of increasing enzyme concentration on the rate of product formation?

sucrase Sucrose + water glucose + fructose 1. What is the limiting factor on the rate of product formation when there is one enzyme present? 2. What is the limiting factor on the rate of reaction when there are four enzymes in the reaction?

Notice there is the same number of enzymes present for each of the three scenarios What trend do you see as a result of increasing substrate concentration on the rate of product formation?

Notice there is the same number of enzymes present for each of the three scenarios What is the limiting factor on the rate of product formation in this experiment?

sucrase Sucrose + water glucose + fructose Changes in what kind of variables in a cell can cause sucrase, a protein, to denature?

sucrase Sucrose + water glucose + fructose Optimal human body temperature averages around 98. 6 o. F. Explain why exposure to extreme heat results in dangerous medical conditions such as heat stroke.

sucrase Sucrose + water glucose + fructose Fevers in mammals are a natural defense against bacterial and viral infections. Viruses and bacteria rely on properly shaped enzymes to complete their life cycles during an infection. State on hypothesis about how fevers help fight infection.

sucrase Sucrose + water glucose + fructose The normal p. H range for human blood and most body tissues is considered to be 7. 25 -7. 35. One possible complication of diabetes is a condition known as ketoacidosis, which causes blood to become more acidic. Explain why this condition can be dangerous, given what you know about proteins and changes in your p. H.

Biomolecule review questions

How many bonds can carbon form?

Name the 4 functional groups we learned about. What effect do functional groups have on a molecule?

Starch, cellulose and glycogen are carbohydrates, which are polymers of __________

How does our body store glucose that it doesn’t need right away?

How are carbohydrates used in our body?

Proteins are polymers of ________

Examples of amino acids

How are proteins used in our body?

What determines the job of a protein?

What is the quaternary structure of a protein?

What’s the difference between dehydration synthesis & hydrolysis?

The compound that most lipids have in common are _______

What is the function of lipids in our body?

Where is energy stored in the biomolecules?

Draw a phospholipid. Label it’s parts

Glycerol “head” Carboxyl group (part of fatty acid) Fatty acid “tails”

Nucleic acids (DNA, RNA) are polymers of ___________

Nucleotide

What is the function of nucleic acids in our body?