211 Biology As Level P-1 (MCQ’s) Topical Unsolved

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1 CELL STRUCTURE 5
1.1 The microscope in cell studies 6
1.2 Cells as the basic units of living organisms 6
1.3 Multiple Topics 46
1 ANSWER SECTION 52
2 BIOLOGICAL MOLECULES 53
2.1 Testing for biological molecules 54
2.2 Carbohydrates and lipids 63
2.3 Proteins and water 85
2.4 Multiple Topics 102
2 ANSWER SECTION 110
3 ENZYMES 111
3.1 Mode of action of enzymes 112
3.2 Factors that affect enzyme action 115
3.3 Multiple Topics 121
3 ANSWER SECTION 137
4 CELL MEMBRANES AND TRANSPORT 139
4.1 Fluid mosaic membranes 140
4.2 Movement of substances. into and out of cells 149
4.3 Multiple Topics 181
4 ANSWER SECTION 184
5 THE MITOTIC CELL CYCLE 185
5.1 Replication and division of nuclei and cells 186
5.2 Chromosome behaviour in mitosis 194
5.3 Multiple Topics 209
5 ANSWER SECTION 217
6 NUCLEIC ACIDS AND PROTEIN SYNTHESIS 219
6.1 Structure and replication of DNA 220
6.2 Protein synthesis 240
6.3 Multiple Topics 250
6 ANSWER SECTION 256
7 TRANSPORT IN PLANTS 257
7.1 Structure of transport tissues 258
7.2 Transport mechanisms 269
7.3 Multiple Topics 295
7 ANSWER SECTION 301
8 TRANSPORT IN MAMMALS 303
8.1 The circulatory system 304
8.2 The heart 316
8.3 Multiple Topics 327
8 ANSWER SECTION 354
9 GAS EXCHANGE AND SMOKING 355
9.1 The gas exchange system 6
9.2 Smoking 368
9.3 Multiple Topics 381
9 ANSWER SECTION 387
10 INFECTIOUS DISEASE 389
10.1 Infectious diseases 390
10.2 Antibiotics 404
10.3 Multiple Topics 409
10 ANSWER SECTION 410
11 IMMUNITY 411
11.1 The immune system 412
11.2 Antibodies and vaccination 6
11.3 Multiple Topics 432
11 ANSWER SECTION 434