Cell Structure 2 Flashcards
What is diffusion?
The net movement of particles from an area of high concentration to an area of lower concentration
What’s an organelle?
A part of a cell with a specific function
What’s a chromosome?
Structure containing DNA, found in the nucleus of eukaryotic cells
What is photosynthesis?
A chemical reaction that occurs in the chloroplasts of plant and algae and stores energy in glucose
What’s an axon?
The extension of a nerve cell along which electrical impulses travel
What is the purpose of the nervous system?
Controls and coordinates all out actions
What is the central nervous system made up of?
Brain and Spinal chord
What is the peripheral nervous system made up of?
All the other nerve cells that connect to the CNS
How are our actions controlled?
Signals must be sent and received
What’s a xylem?
Dead plant cells joined together into long tubes through which water flows during transpiration
What’s transpiration?
The gradual release of water vapour from leaves to continue the ‘pull’ of water up to them from the soil
What’s a phloem?
Living cells that carry sugars made in photosynthesis to all cells of a plant
What’s translocation?
The movement of sugars made in photosynthesis from the leaves of a plant
What is the function of the eyepiece lens?
To look through to see the sample
What is the function of the objective lens?
For magnification
