AP Biology Unit 3 Review

Front

What effect does an increase in temperature have on reaction rates?

Back

An increase in temperature increases the speed/kinetic energy of particles, leading to more frequent collisions and a higher reaction rate.

Front

Where does the substrate bind on an enzyme?

Back

The substrate binds at the active site of the enzyme.

Front

What is oxidation in biochemical terms?

Back

Oxidation is the loss of electrons from a molecule.

Front

What must occur to maintain order in cellular processes?

Back

Energy input must exceed energy loss to maintain order and power cellular processes.

Front

What is the effect of increasing enzyme concentration on reaction rates?

Back

Increasing enzyme concentration will increase the rate of the reaction.

Front

Define enzyme.

Back

An enzyme is a biological catalyst that speeds up chemical reactions in living organisms.

Front

What is the role of the active site in an enzyme?

Back

The active site is the region on the enzyme where the substrate binds and the reaction occurs.

Front

Explain the term 'allosteric site'.

Back

The allosteric site is a site on an enzyme where molecules can bind, causing a change in the enzyme's activity.

Front

What is the significance of kinetic energy in chemical reactions?

Back

Kinetic energy is crucial as it determines the speed of particles, affecting the frequency of collisions and reaction rates.

Front

What happens to enzyme activity at high temperatures?

Back

At high temperatures, enzyme activity may increase initially but can lead to denaturation, reducing activity.