Enzymes Quiz

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in red blood cells, the compound carbonic anhydrase the increase the rate at which carbon dioxide is converted to bicarbonate ions for transport in the blood. in red blood cells, carbonic anhydrase acts as which of the following.

an Enzyme

what are the optimum temperatures for each enzyme?

37.5 C

Salivary amylase breaks down which class of organic molecules?

Carbohydrates

to which category of biological molecules does cellulose belong?

Carbohydrates

Which of the following conclusions can be made about he functioning of catalase?

Catalase best works at 34 degrees C

which enzyme would have the most activity in humans

Enzyme X

which enzyme is active over the largest temperature range?

Enzyme Y

which enzyme would you expect to find in a bacterium growing in a hot spring?

Enzyme Y

baby food manufactures sometimes use proteases in their products. Proteases catalyze the breakdown proteins in these foods, making digestion easier for infants.

Enzymes

Human tears contain the enzyme lysozame, which damages the cell walls of bacteria. Which of the following statements about lysozyme is most accurate?

Lysozyme breaks a specific type of bond in a bacterial cell wall molecule.

Some bacteria live in hot springs. Their cells contain enzymes that function best at temperatures of 70 C or higher at a temperature of 50 C, how will the enzymes in these bacterial cells most likely be affected?

The enzymes will not increase the rate of reactions as much as they would at 70 C.

at what temperature do the two enzymes have the same amount of activity?

about 46 C

high temperatures can cause an enzyme to denature. what does this mean?

it means that the enzyme will lose its shape and not function.

Enzymes affect the reactions in living cells by changing the

speed of the reaction.

Which of the following best explains why enzymes are necessary for many cellular reactions?

the reactions are too slow to meet the needs of the cell if enzymes are missing


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