Cells Flashcards
What type of cells are animal and plant cells?
Eukaryotic cells
Mitochondria function
releases energy from aerobic respiration
What are prokaryotic cells?
bacteria cells
What are in bacteria cells?
Plasmid (contains DNA) and DNA loop
What are the two different microscopes?
Light microscope and electron microsope
Which microscope is better?
Electron microscope
What are the specialised cells?
Root hair cell, sperm cell, blood cell and nerve cell
What is diffusion?
Spreading out of particles from a high concerntration to a low concerntration
What is osmosis?
The net movement of water particles from an area of high concerntration to an area of low concerntration.
What is active transport?
The net movement of particles from a high concerntration to a low concerntration.
How is a sperm cell adapted to carry out it’s function?
Has a tail so it can swim to the egg
What is the formula for magnification?
length of the Image divided by the Actual Length.
What is the function of plasmids?
Carry genes
Examples of diffusion
water, oxygen and carbon dioxide molecules can pass directly through the cell membrane
Example of Active Transport
Moving materials across the cell membrane
Whic cell is more complex?
Eukartyotes
Where do the chemical reactions happen?
The cytoplasm
What are microscopes for?
To see things we cant with the naked eye
How many ums in a mm?
1000
What is differentation?
When a cell changes to become specialised for it’s job
What are nerve cells specialised for?
Carry electric signals from one part of the body to the other.
What are muscle cells specialised for?
It is to contract quickly
What are root hair cells specialised for?
Absorbing minerals
What are phloem and xlyem specialised for?
Transports food and water around plants.
Which does not affect the rate of diffusion across membranes?
Colour of molecule
What is an independent variable?
A variable that is controlled and changed in an experiment
What is required in Active Transport?
Energy
