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Cambridge International A Level Biology Revision Guide

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<strong>Cambridge</strong> <strong>International</strong> A <strong>Level</strong> <strong>Biology</strong><br />

Index<br />

526<br />

α-helix, 40<br />

A band, 346<br />

abiotic factors, 402<br />

abscisic acid (ABA), 323, 354<br />

absorption spectrum, 295<br />

accessory pigments, 288, 295<br />

accuracy of measurements, 254<br />

acetylcholine, 237, 341<br />

acetylcholinesterase, 342<br />

acid rain, 443<br />

acrosome, 16<br />

actin, 346, 347<br />

action potentials, 333, 335–40<br />

action spectrum, 295<br />

activation energy, 56–7, 269<br />

active immunity, 232–3<br />

active loading, 149<br />

active transport, 86–7, 88, 271–2<br />

adenine, 112, 113<br />

adenosine, 113<br />

adenosine deaminase (ADA), 476, 478<br />

adhesion, 143<br />

ADP (adenosine diphosphate), 17, 31,<br />

87, 270<br />

adrenaline, 193, 303, 318<br />

aerenchyma, 281<br />

afferent arteriole, 306<br />

AIDS (acquired immune deficiency<br />

syndrome), 200, 205–9<br />

alchemists, 94<br />

albinism, 388–9<br />

alcoholic fermentation, 277<br />

alcohols, 37<br />

aleurone layer, 356<br />

alien species, 451–2<br />

all-or-nothing law, 340<br />

alleles, 118, 366, 367, 374, 378<br />

allopatric speciation, 414<br />

allopolyploids, 415<br />

altitude sickness, 172<br />

alveoli, 186, 189–90<br />

amino acids, 39, 416, 512<br />

ammonia, 287, 304<br />

amniocentesis, 476–7<br />

AMP (adenosine monophosphate), 270<br />

amylase, 356, 391<br />

amylopectin, 33<br />

amylose, 33<br />

anaerobic respiration, 277–8<br />

anaphase, 97<br />

animal cells<br />

characteristic features, 440<br />

compared to plant cells, 5–6<br />

osmosis in, 84<br />

ultrastructure, 13–19<br />

Animalia, 440<br />

anole lizards, 417<br />

Anopheles mosquito, 202<br />

antibiotic resistance, 214–16, 405–6<br />

antibiotics, 213–16<br />

antibodies, 168, 224, 228–9<br />

monoclonal, 238–40<br />

anticodons, 119<br />

antidiuretic hormone (ADH), 311,<br />

312–14<br />

antigen presentation, 230<br />

antigenic drift, 234<br />

antigenic shift, 234<br />

antigens, 77, 224<br />

antitoxins, 229, 232<br />

antiviral drugs, 214<br />

aorta, 159, 173<br />

aphids, 148<br />

apoplastic pathway, 141, 144<br />

apparatus, 491–2<br />

Archaea, 436, 437<br />

arteries, 160, 161–2<br />

arterioles, 162<br />

artesunate, 204<br />

artificial active immunity, 232<br />

artificial heart, 158<br />

artificial insemination, 448<br />

artificial passive immunity, 232<br />

artificial selection, 409–12<br />

asexual reproduction, 101<br />

assimilates, 146<br />

assisted reproduction, 448<br />

Atlantic salmon, 484<br />

ATP (adenosine triphosphate), 17, 31,<br />

86, 113, 270–2, 349<br />

ATP synthase, 270–1, 274, 276<br />

atrial systole, 175<br />

atrioventricular node (AVN), 177<br />

atrioventricular valves, 175<br />

atrium, 174<br />

autoimmune diseases, 237–8<br />

autolysins, 213<br />

autopolyploid, 415<br />

autosomal linkage, 383–4<br />

autosomes, 366, 378<br />

autotrophs, 268, 287<br />

auxins, 354, 355<br />

axons, 331–2<br />

β-galactosidase, 390<br />

β-glucuronidase, 468<br />

β-lactamase, 214<br />

β-pleated sheet, 40<br />

B-lymphocytes (B cells), 226–8<br />

bacteria, 389, 390, 436, 466<br />

bar charts, 258<br />

barley seed, 356<br />

basal bodies, 19<br />

BCG vaccine, 212<br />

belt transect, 431<br />

Benedict’s test, 32<br />

best-fit line, 257<br />

bicuspid valve, 175<br />

binomial system, 424<br />

biodiversity, 426–30, 441–5<br />

bioinformatics, 474–5<br />

biological drawings, 129, 262<br />

bioreactors, 287<br />

biosensors, 319–20<br />

biotic factors, 402<br />

birth control, 351–3, 448<br />

biuret reagent, 44<br />

black bears, 300<br />

BLAST, 475<br />

blood, 166–8<br />

blood glucose, 315–19<br />

blood groups, 378<br />

blood plasma, 164<br />

blood pressure, 161, 162, 163<br />

blood tests, 231<br />

blood vessels, 159, 160–3<br />

blubber, 38<br />

body temperature, 269, 300, 302–3<br />

Bohr effect, 170<br />

Bombadier beetle, 54<br />

bone marrow stem cells, 232<br />

botanic gardens, 449–50<br />

Bowman’s capsule, 306, 307<br />

Braun–Blanquet scale, 429<br />

bronchi, 187–9<br />

bronchioles, 187–9<br />

bronchitis, 191<br />

Bt toxin, 482<br />

budding, 101<br />

buffer solutions, 60, 253<br />

building blocks of life, 28–9<br />

bulk transport, 87<br />

bundle sheath cells, 293, 294<br />

Burmese pythons, 451<br />

bush elephants, 442

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