Enzymes Y10

Enzymes Y10

Multiple Choice

What is another name for enzymes?

• chemical catalysts
• microorganisms
• biological catalysts
• inorganic catalysts

Multiple Choice

Enzymes provide a site where reactants called substrates can be brought together in an enzyme-catalyzed reaction. The site is called the

• enzyme substrate complex.
• reaction site.
• active site.
• lock and key.

Multiple Choice

After the enzyme and substrate bind together and perform the reaction, what does the substrate become?

• a substrate
• an enzyme
• a product
• an active site

Multiple Choice

Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?

• reducing the number of products   
• reducing the activation energy
• increasing the temperature of the cell
• increasing the concentration of reactants 

Multiple Choice

What is a substance called if it speeds up a chemical reaction?

• reusable

• catalyst

• specific

• fragile

Multiple Choice

What is the name of the tract that leads from the mouth to the stomach?

• Liver

• Trachea

• Oesophagus

• Galbladder

Multiple Choice

Where does digestion start taking place?

• The mouth

• The oesophagus

• The stomach

• The liver

Multiple Choice

Where in the mouth are there most enzymes?

• The tongue

• The saliva

• The teeth

• The soft palate

Fill in the Blanks

is the enzyme that breaks down starch.

Fill in the Blanks

is the name of the enzyme that breaks down maltose to glucose.

Multiple Choice

An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 

• true
• false

Multiple Choice

What is the function of an enzyme?

• enzymes break themselves into small pieces
• enzymes slow down chemical reactions
• enzymes speed up chemical reactions
• enzymes combine products to form reactants 

Multiple Choice

Which of the following binds to the active site of an enzyme? 

• substrate
• product
• codon
• none of the above

Multiple Choice

What makes an enzyme substrate specific?

• Size
• Shape
• Name
• Location it is found in

Fill in the Blanks

is the name of the enzyme that breaks down Proteins into peptides.

Multiple Choice

Trypsin is located in the...

• Stomach

• Pancreas

• Small intestine

• Large intestine

Fill in the Blanks

is the name of the enzyme that breaks down peptides into amino acids