Unit 3 Review

Front

What is the powerhouse of the cell?

Back

Mitochondria - the organelle where energy is created in the form of ATP.

Front

What temperature does the enzyme work best at according to the graph?

Back

30 C - the optimal temperature for enzyme activity.

Front

What structure provides protection and structure to all plant cells and some prokaryotes?

Back

Cell Wall - a rigid layer that is not present in animal cells.

Front

What is indicated by the term 'active site' in an enzyme?

Back

Active Site - the region on an enzyme where substrates bind and reactions occur.

Front

What do prokaryotic and eukaryotic cells have in common?

Back

Plasma Membrane, Ribosomes, DNA, Cytoplasm - all four components are found in both cell types.

Front

Define 'enzyme'.

Back

Enzyme - a biological catalyst that speeds up chemical reactions in living organisms.

Front

What is the function of ribosomes?

Back

Ribosomes - cellular structures that synthesize proteins by translating messenger RNA.

Front

What is the role of the plasma membrane?

Back

Plasma Membrane - a selective barrier that regulates what enters and exits the cell.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have them.

Front

What is ATP?

Back

ATP (Adenosine Triphosphate) - the energy currency of the cell, used for energy transfer.