Year10 Exams Flashcards
One sub cellular structure in a prokaryotic cell
Plasmid dna,chromosomal dna
How do ciliated epithelial cell help in fertilisation
The cilia beat backwards and forwards
And move the egg along the surface of the fallopian tube towards the uterus
How would an image differ with an electron microscope
Clearer and more detailed
Has a higher magnificatiom
And a higher resolution
What colour is iodine
Browny orange
What colour does iodine Turn in the prescence of starch
Blue black
Ph on enzymes
Add buffer of different phs
Place starch in a tile with amylase
Measure every 30 seconds
See how long it takes for the amylase to break down the starch
No starch=iodine turns black, blue
Why is the breakdown of molecules key
Enables the body to absorb smaller molecules into the blood
Describe test to see if fat is in egg whites
Add to a test tube containing ethanol, shake tube until the whites dissolve, pour the solution into the water. If there is fat then it will turn into a milky emulsion
Test to see protein in egg whites
· Add potassium hydroxide to egg whites then copper sulfate. If proteins are present it will turn purple if not it will be blue
Test to show differences between glucose concentrations
Add Benedict’s reagent to each solution, heat test tubes in a water bath set to 75 degrees, see the formation a coloured precipitate
Give an example of diffusion
Plant absorbing water in the roots
