211 Biology As Level Paper 1 (MCQ's) Topical Worked Solutions

UNIT 1 CELL STRUCTURE
1.1 The microscope in cell studies
1.2 Cells as the basic units of living organisms
1.3 Multiple Topics
Answer Section
Solutions

UNIT 2 BIOLOGICAL MOLECULES
2.1 Testing for biological molecules
2.2 Carbohydrates and lipids
2.3 Proteins and water
2.4 Multiple Topics
Answer Section
Solutions

UNIT 3 ENZYMES
3.1 Mode of action of enzymes
3.2 Factors that affect enzyme action
3.3 Multiple Topics
Answer Section
Solutions

UNIT 4 CELL MEMBRANES AND TRANSPORT
4.1 Fluid mosaic membranes
4.2 Movement of substances. into and out of cells
4.3 Multiple Topics
Answer Section
Solutions

UNIT 5 THE MITOTIC CELL CYCLE
5.1 Replication and division of nuclei and cells
5.2 Chromosome behavior in mitosis
5.3 Multiple Topics
Answer Section
Solutions

UNIT 6 NUCLEIC ACIDS AND PROTEIN SYNTHESIS
6.1 Structure and replication of DNA
6.2 Protein synthesis
6.3 Multiple Topics
Answer Section
Solutions

UNIT 7 TRANSPORT IN PLANTS
7.1 Structure of transport tissues
7.2 Transport mechanisms
7.3 Multiple Topics
Answer Section
Solutions

UNIT 8 TRANSPORT IN MAMMALS
8.1 The circulatory system
8.2 The heart
8.3 Multiple Topics
Answer Section
Solutions

UNIT 9 GAS EXCHANGE 
9.1 The gas exchange system
9.2 Multiple Topics
Answer Section
Solutions

UNIT 10 INFECTIOUS DISEASE
10.1 Infectious diseases
10.2 Antibiotics
10.3 Multiple Topics
Answer Section
Solutions

UNIT 11 IMMUNITY
11.1 The immune system
11.2 Antibodies and vaccination
11.3 Multiple Topic
Answer Section
Solutions