Biology EOC Review #2

Front

What is specificity in relation to enzymes?

Back

Specificity refers to the ability of an enzyme to catalyze a reaction for only one specific substrate due to the unique shape of its active site.

Front

What is the optimum pH for enzyme activity?

Back

The optimum pH is the pH at which an enzyme's activity is highest. For many enzymes, this is around pH 6.6.

Front

Where do the light-dependent reactions of photosynthesis occur?

Back

The light-dependent reactions occur in the thylakoid membranes of chloroplasts.

Front

What is a byproduct of the light-dependent reactions of photosynthesis?

Back

Oxygen is a byproduct of the light-dependent reactions of photosynthesis.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed in the process.

Front

What happens to enzymes at extreme pH levels?

Back

Extreme pH levels can lead to denaturation, where the enzyme's structure is altered, resulting in loss of function.

Front

What is the function of thylakoids in photosynthesis?

Back

Thylakoids are membrane-bound structures where the light-dependent reactions of photosynthesis take place.

Front

What is the relationship between enzyme activity and temperature?

Back

Enzyme activity typically increases with temperature up to a certain point, after which it may decrease due to denaturation.

Front

What is the difference between competitive and non-competitive inhibition?

Back

Competitive inhibition occurs when an inhibitor competes with the substrate for the active site, while non-competitive inhibition occurs when an inhibitor binds to a different site, altering enzyme function.

Front

What is the significance of the active site of an enzyme?

Back

The active site is the region of the enzyme where substrate molecules bind and undergo a chemical reaction.