Review Topic 2
Enzymes are necessary because they cause reactions to happen.
Human cells can exist only in a balanced environment. ◦ Cells are enclosed by a cell membrane. Small compounds can pass through easily. Larger charged.
CELL TRANSPORT Types of Transport Across the Cell Membrane.
THE CELL Cells are mainly formed of water, but present in their structure are proteins, carbohydrates, and nucleic acids (DNA). Structure Cell membrane.
Science GHSGT Review
