Enzyme Test Gen Bio

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Answer MCQ

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Which type of molecule are enzymes?

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Enzymes only work with specific substrates because each enzyme:

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Changes in the shape of an enzyme can affect its ability to function correctly. This loss of shape (denaturation) can occur as a result of _______________.

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At about what temperature do BOTH the human enzyme and thermophilic enzyme catalyze (help the reaction go) chemical reaction (at least a little)? Hint - look at where the 2 lines overlap!

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Which enzyme from the graph would most likely be found in a bacterium living in hot springs (close to the boiling point of water)?

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In the lock and key model of of enzyme function shown above, what is happening in step 2?

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This diagram shows what happens to lactose in the small intestine with lactase present

Draggable item		Corresponding Item
lactase		substrate
lactose		products
glucose + galactose		enzyme

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Drag one of the two reactions to each of the catergories

Item 1
Item 2

Catabolic/Breaking Rx
Anabolic/Making Rx
1 substrate broken into 2 products
2 substrates bonded into 1 product
Would happen inside the small intestine/digestion
Would happen in the mammary glands of female mammals as part of the making milk for their newborns

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Which of the following is NOT correct about enzymes?

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This is the

This is the

This is the

Answer MCQ

Which type of molecule are enzymes?

Enzymes only work with specific substrates because each enzyme:

Changes in the shape of an enzyme can affect its ability to function correctly. This loss of shape (denaturation) can occur as a result of _______________.

At about what temperature do BOTH the human enzyme and thermophilic enzyme catalyze (help the reaction go) chemical reaction (at least a little)? Hint - look at where the 2 lines overlap!

Which enzyme from the graph would most likely be found in a bacterium living in hot springs (close to the boiling point of water)?

In the lock and key model of of enzyme function shown above, what is happening in step 2?

At what temperature does this enzyme work the fastest (optimal temp.)?

Answer MCQ

Which enzyme works best (optimal pH) in an acidic environment (pH less than 7)

Which enzyme works best (optimal pH) in a neutral environment?

What happens to the enzyme when the pH increases/decreases above/below its optimal pH?

This diagram shows what happens to lactose in the small intestine with lactase present

Drag one of the two reactions to each of the catergories

Which of the following is NOT correct about enzymes?

Explain why enzymes must work correctly in order for life to exist!