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IGCSE keywords- biology

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1. Characteristics and
classification of living
organisms
turgid
active site
flaccid
enzyme-substrate complex
7 features of living organisms
water potential
substrates
binomial classification
plasmolysis
products
cladistic classification
active transport (uptake of ions by
roots, glucose by intesines and
reabsorption by tubules in kidney)
factors affecting enzyme activity
(temperature, pH, substrate
concentration)
DNA classification
proteins in active transport
2. Cell structure:
7. Human nutrition
cytoplasm
5. Biological molecules
balanced diet
cell membrane
carbohydrates
dietary needs
nucleus
lipids (fats)
malnutrition
genetic material (DNA)
proteins
starvation
ribosomes
polysaccharides (starch,
glycogen, cellulose)
constipation
mitochondria
coronary heart disease
amino acids
chloroplasts
obesity
fatty acids
cell wall
scurvy
glycerol
endoplasmic reticulum
vitamins C and D
iodine test (starch)
calcium
3. Levels of organization
Benedict's reaction (reducing
sugars)
iron
cells
biuret test (proteins)
fibre (roughage)
tissue
ethanol emulsion test
marasmus
organ
DCPIP test (vit C)
ingestion
organ system
shape of proteins
mechanical and chemical
digestion
magnification
water properties
µm, mm
absorption
structure of DNA
assimilation
double helix
egestion
4. Movement in and out of cells
ATGC
diarrhea
diffusion
cholera
kinetic energy
6. Enzymes
factors affecting diffusion (surface
area, conc. gradient, temperature
and distance)
catalyst
osmosis
reaction speed
turgor
complementary shape
biological catalyst
alimentary canal (mouth,
salivary glands, oesophagus,
stomach, small intestine
(duodenum and ileum), pancreas,
liver, gall bladder and large
intestine (colon, rectum, anus))
types of human teeth (incisors,
canines, premolars and molars)
coronary heart disease (causes
and treatment)
structure of human teeth (enamel,
dentine, pulp, nerves, cement,
gums)
red blood cells
10. Gas exchange in humans
ventilation
gas exchange
vena cava
respiration
enamel
aorta
dental (tooth) decay
pulmonary artery
dental care
pulmonary vein
amylase
renal artery
lungs
diaphragm
ribs
protease
renal vein
internal and external intercostal
muscles
lipase
arterioles
larynx
gastric juice
venules
trachea
maltose
lymphatic vessels
bronchi
maltase
platelets
bronchioles
pepsin
blood clotting
alveoli
trypsin
fibrinogen
capillaries
bile
fibrin
cartilage in trachea
villi
white blood cells
exhaling and inhaling
microvilli
lymphocytes
inspired vs expired air
lacteal
antibodies
limewater (test for CO2)
capillaries
phagocytes
factors affecting the depth of
breathing
plasma
goblet cells
8. Transport in animals
mucus
blood vessel
9. Diseases and immunity
valves
pathogen
single vs double circulatory
system
transmissible disease
ciliated cells
11. Respiration
mechanical and chemical barriers
structure of heart (muscular wall,
the septum, the left and right
ventricles and atria, one-way
valves - atrioventricular and
semilunar- and coronary arteries)
energy use in body
cell response (white blood cells)
respiration uses enzymes
vaccination
aerobic vs anaerobic respiration
antigens
oxygen debt
arteries vs veins
active vs passive immunity
immune memory
balanced equation of respiration
(for both aerobic and anaerobic)
autoimmune (i.e. type I diabtetes)
lactic acid
left vs right ventricle
ECG
factors affecting heart rate (pulse
rate)
ethanol
fermentation
13. Excretion in humans
vasodilation
translocation
urea (in LIVER !!!)
vasoconstriction
source
deamination
diagram of the skin (hairs, hair
erector muscles, sweat glands,
receptors, sensory neurones,
blood vessels and fatty tissue)
sink
sweating
nerve impulse
shivering
neurones
carbon dioxide
17. Coordination and response
kidneys
filtration
reabsorption
central nervous system (CNS)
cortex
15. Plant nutrition
medulla
photosynthesis
ureter
balanced equation
bladder
chlorophyll
urethra
factors affecting photosynthesis
glomerulus
limiting factors for photosynthesis
tubules
greenhouse (glasshouse)
dialysis
leaf structure (chloroplasts,
cuticle, guard cells and stomata,
upper and lower epidermis,
palisade mesophyll, spongy
mesophyll, vascular bundles,
xylem and phloem in leaves of a
dicotyledonous plant)
peripheral nervous system
coordination and response
volontary and involontary actions
kidney transplant
osmoregulation
motor (effector)
relay (connector)
sensor (receptor)
sensory and motor neurons
reflex arc
synapse
neurotransmitter
synaptic cleft
14. Homeostasis
nitrate ions importance
thermoregulation
magnesium ions importance
osmoregulation
drugs (narcotics)
sense organs
phloem
structure of eye (cornea, iris,
pupil, lens, retina, optic nerve and
blind spot, fovea)
sucrose
pupil reflex
xylem
accomodation
root hair
ciliary muscles
root cortex
suspensory ligaments
transpiration
shape of lens
stomata
distribution of rods and cones
guard cells
tropic responses in plants
water cohesion
gravitropism
water adhesion
phototropism
negative feedback
wilting
auxins
diabetes
factors affecting transpiration
synthetic plant hormone 2,4-D
hormonal regulation
homeostasis
hormone
adrenal glands
adrenaline
pancreas
glucagon
insulin
antagonism of hormones
nervous vs hormonal control
16. Transport in plants
18. Drugs
factors affecting germination of
seeds
drug
gene
medicinal drugs
antibiotics
allele
XX, XY sex determination
male reproductive system (testes,
scrotum, sperm ducts, prostate
gland, urethra and penis)
bacterial resistance to antibiotics
genetic information
genetic code
excessive alcohol consumption
female reproductive system
(ovaries, oviducts, uterus, cervix
and vagina, and state the
functions of these parts)
addiction
sperm
withdrawal
egg cell (ovum)
how protein is made:
- DNA in nucleus
- mRNA copies gene
- ribosome reads from mRNA
- ribosome assembles proteins
- specific order of amino acids is
determined
HIV
male vs femal gamete
mitosis vs meiosis
heroin
embryo
nuclear division
tobacco smoking
fetus
stem cells
COPD
umbilical cord
monohybrid inheritance
carbon monoxide
placenta
genotype
nicotine
breast feeding
phenotype
tar
ante-natal care
homozygous
lung cancer
process of labour
heterozygous
detoxication in liver
amniotic sac
dominant
anabolic steroids
dilation of cervix
recessive
testosterone (testis)
pedigree
estrogen (ovaries)
Punnett square
progesteron (corpus luteum,
placenta)
co-dominance
gametes
zygote
menstrual cycle
fertilisation
birth control (natural, chemical,
barrier, surgical)
MRSA
19. Reproduction
sexual vs asexual reproduction
blood types
sex-linked genes
colour blindness
haploid
artificial insemination
21. Variation and selection
diploid
artificial fertilization
flower structure (sepals, petals,
stamens, filaments and anthers,
carpels, style, stigma, ovary and
ovules)
pollination (insect vs wind)
variation
sexually transmitted infections
phenotypic vs genotypic variation
HIV
AIDS
pollen
continuous vs discontinuous
variation
mutation
20. Inheritance
pollen tube
iodizing radiation
chromosome
self-pollination vs crosspollination
DNA structure
sickle cell anemia (association to
malaria)
adaptive feature
combustion
large scale monocultures
fitness
fossilisation
intensive livestock production
hydrophytes
fossil fuels
habitat destruction
xerophytes
deforestation
natural selection
water cycle (evaporation,
transpiration, condensation and
precipitation)
competition
nitrogen cycle
eutrophication of water
selective breeding
ammonia
greenhouse effect
evolution
nitrification
climate changes
process of adaptation
nitrogen fixation
acid rain
artificial selection
nitrate ions
susteinable resources
deamination
sustainable development
denitrification
renewable vs non-renewable
resources
20. Biotechnology and genetic
engineering
extinction of species
genus
population
biotechnology
factors affecting population size
(growth)
genetic engineering
22. Organisms and
environment
sources of pollution
species
endangered species
use of bacteria
lag, exponential (log), stationary
and death phases in the sigmoid
population growth curve
plasmids
ethanol production and biofuels
community
bread making
ecosystem
juice production (pectinase)
source of energy in ecosystem
biological washing powders
energy flow
lactose-free milk
food chain
Penicillum
trophic level
penicillin
food web
production of insulin
producers
GMO
consumers
decomposers
21. Human influences on
ecosystems
carnivores
food supply
herbivores
chemical fertilizers
pyramid of biomass and numbers
insectides
nutrient cycles
herbicides
carbon cycle
reasons for conservation
programs
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