GCSE SCIENCE PAPER 1 CORRECTIONS

villi + small intestine

absorbs glucose - energy for respiration
absorbs amino acids - to build new protein

Why was Mendeleev accepted

- discovered elements properties - reactivity were predicted correctly
- discovered elements fitted in gap

Group 1 + water observation

effervescence
metal floats / melts
metal moves on surface
metal flame
hydrogen gas released

after filtering

wash/dry solid to remove residue

titration + accuracy

- use white tile under flask

why is less water loss for plant good

so plant does not wilt

How is glucose used in plants for storage?

Converted into insoluble starch and stored

How is glucose used in plants to store energy?

Converted into fats and oils

What is another important use of glucose in plants?

To produce amino acids from proteins

less glucose

less respiration , less energy released for growth

Pre-clinical testing

on tissue culture/animals
- check toxicity, dosage and efficacy

clinical trials

healthy volunteers, LOW dosage
check for side effects

double-blind trials

placebo
check for OPTIMUM DOSAGE/efficacy

glucose from small intestine--> muscle cell

glucose absorbed by diffusion into bloodstream
blood delivers glucose to muscles via capillaries

yeast vs muscles

Y- ethanol, M- lactic acid
Y- CO2 M- X
both release small amount of energy

Biuret test

test for proteins
blue- purple

bacteria cell divisions stops

shortage of nutrients, cells die

pregnancy test control zone

other antibodies which do not attach to HCG bind to antibodies in control zone
blue dye appears

substrate

breaks down to form porducts

plant breaks down glucose

to release enrgy

solar power

non polluting
low efficiency
demand / supply

gentle evaporation

water bath

metal + acid

salt + hydrogen

metal oxide + acid

salt + water

metal carbonate + acid

salt + carbon dioxide + water

how can scientist produce many x-resistant plants

take STEM CELLS from meristem
(and clone)

What process uses glucose in plants to release energy?

Respiration

What does glucose in plants help produce to strengthen cells?

Cellulose

peer review

prevent false claims

ANY SCIENCE, ANY PRACTICAL WITH GAS - ACCURACY

COLLECT GAS IN GAS SYRINGE

what organ breaks down lactic acid

liver

LESS PROTEN + LESS GLUCOSE

STUNTED GROWTH