B1: Cells Structure and Transport Flashcards
What is in an animal cell
Cell membrane, cytoplasm, nucleus, mitochondria and ribosome.
What is in a plant cell
Cell membrane, nucleus, cytoplasm, ribosomes, mitochondria, cel wall, large vacuole, chloroplast,
How do you work out the size of magnification
Magnification=size of image/ size of real object
What are eukaryotic cells
Cells which have a cell membrane, cytoplasm and genetic material. Fungi plants and Protista are examples.
What are prokaryotes
Single celled living organisms.
What is a specialised cell
A cell specialised to perform a specific job.
Root cells adaptations?
Increase the surface area for water to move into the cell.
Large vacuole that speeds up the water movement by osmosis
What is diffusion?
Diffusion is the spreading of particles of a gas in a solution (solute)
What is the rate of diffusion?
The particles quickly move from high concentration to low concentration.
What is osmosis?
The movement of water molecules through a partially permeable membrane.
Movement of osmosis?
Moves from a dilute solution to a concentrated solution through the partially permeable membrane from osmosis.
What is Active transport?
Movement of a low concentration to a high concentration up a gradient.
What happens to the SA:Vol when the object gets bigger? Why?
When objects get bigger SA:Vol gets smaller. This is because the diffusion distance is short.
What is the effect of the root hair cell?
The plants needs a lot of water and the root hair cell help it take the water and mineral ions there quicker.
What do xylem tissues carry?
They carry mineral ions up the rest of the plant.
