6658887
Description
Mind Map by Niamh Mannion, updated more than 1 year ago
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Created by Niamh Mannion
almost 8 years ago
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The Cell and Microscope
- a microscope is used to examine a specimen that is
too small to see with the naked eye.
- Eyepiece is used to look at the specimen. The objective lenses focus on the slide for examination.
The arm is used to carry the microscope. The stage is where the slide is placed for examination. The
clips hold the slide in place. The coarse focus gives a rough focus of the slide first. The fine focus
wheel gives a more precise focus of the slide. The light source shines light up to the slide. The
diaphragm controls the amount of light going to the slide.
- animal cell structures under LM: nucleus, cell membrane, cytoplasm.
- plant cell structure under LM: cell wall, nucleus cytoplasm.
- Electron Microscope: uses electrons instead of light.
resolution and magnification are much better
- animal cell structures under LM: nucleus, cell membrane, cytoplasm.
- Calculate magnification: eyepiece lense X objective lens. Eg. Eyepiece lens 10X Objective lens 4X= 40X
- Eyepiece is used to look at the specimen. The objective lenses focus on the slide for examination.
The arm is used to carry the microscope. The stage is where the slide is placed for examination. The
clips hold the slide in place. The coarse focus gives a rough focus of the slide first. The fine focus
wheel gives a more precise focus of the slide. The light source shines light up to the slide. The
diaphragm controls the amount of light going to the slide.
- PARTS OF A PLANT CELL(8): cytoplasm, chloroplasts, large
vacuole, mitochondria, outer cell wall, inner cell wall,
ribosomes, neucleus
- PARTS OF AN ANIMAL CELL(6): cell membrane, neucleus,
cytoplasm, mitochondria, ribosomes (small vacuole)
- DIFFERENT: chloroplasts & cell wall
- cell membrane- made up of phospholipids and proteins-
function seperate cell organelles, be semi permeable,
support the cell, recognise molecules that touch it
- neucleus-contains cells genetic info, controls the activities of the cell.
- EUKARYOTES- organisms whose cells contain a neucleus and other membrane bound organelles
- PROKARYOTES- organisms whose cells never contain a neucleus or other membrane bound organelles
- EUKARYOTES- organisms whose cells contain a neucleus and other membrane bound organelles
- neucleus-contains cells genetic info, controls the activities of the cell.
- DIFFERENT: chloroplasts & cell wall
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