Cells & Microscope Flashcards
Living Thing
A living thing has seven characteristics-Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition- otherwise known as Mrs Gren
Cell
Cells are found all around the body and normally contain cytoplasm, mitochondria and a nucleus. They are the building blocks of life. All organisms are made up of many cells of one.
Cell Membrane
The casing, like the skin, of animal cells. It choses what can go in and out of the cells
Nucleus
Found in most cells, the nucleus contains DNA. The nucleus must give permission to start binary fission
Cytoplasm
A jelly-like substance found in cells. Chemical reactions take place here.
Mitochondria
This is the site of respiration which happens when energy is released from food.
Cell wall
Similar to a cell membrane, but only found in plant cells. It gives plant cells support and structure.
Permanent Vacuole
A large area in plant cells used to store food called cell sap.
Chloroplast
Found in plant cells and used to trap sunlight energy for photosynthesis. Also found in some unicellular organisms.
Eyepiece lens
The lens found at the top of the microscope that has x10 power. This is the lens that you look through.
Objective lenses.
The lenses found in varying sizes and powers such as x4, x10 and x20. Normally found in groups of three
Coarse Focus Wheel
The larger wheel on a microscope used first for gaining a rough image
Fine Focus Wheel
The smaller wheel on a microscope used after the coarse focus wheel to gain a clear image.
Stage
The space on a microscope to place your slide.
Total magnification
The total magnification of the eyepiece lens and the objective lens
