Cell Structure Flashcards
(17 cards)
What are the Characteristics of living things (7)
Nutrition
Movement
Response
Excretion
Growth
Reproduction
Respiration
4 types of living things
Plants
Animals
Bacteria
Fungi
What is the cell
: the smallest working unit of a living organism.
All living things are made up of cells. They can be described as the ‘building blocks of life
2 types of cell
Animal
Plant
Parts of animal cell
Nucleus
Cell membrane
Mitochondria
Cytoplasm
Vacuole
Parts of a plant cell
Cell membrane
Nucleus
Cyptoplasm
Vacuole
Mitochondria
Cell wall
Chloroplasts
What is the nucleus
The nucleus is the control centre of the cell.
• It contains chromosomes, which contain genes (DNA)
What is the cell membrane
• The cell membrane controls what enters and leaves the cell.
•• Oxygen and nutrients can enter the cell.
• Carbon dioxide and waste leave the cell.
What is cyptoplasm
A jelly like substance that suspends the cell organelle.
What is the mitochondria
• The mitochondria are the powerhouse of the cell.
• Respiration occurs here.
What is cell wall
Provides shape and support only.
What are chloroplast
• Photosynthesis.
• Contains green pigment chlorophyll.
• Chlorophyll traps the sunlight & makes glucose.
What is used to examine cells
Microscope
What chemical is used under microscope to see plant cells clearer
Methylene blue is
What chemical is used under microscope to see animal cells clearer
Iodine
How much does eyepiece lense magnify by
X10
To prepare and examine animal cells using a light microscope
Scrape the inside of your mouth with a cotton bud.
Spread the smear of cheek cells on a glass slide.
Add two drops of methylene blue using a dropper, to stain the nucleus dark blue.
Using a mounting needle, slowly add a cover slip at a 45° angle (reduce air bubbles).
Note: The purpose of the cover slip is to protect the microscope lens.
Examine using the coarse focus wheel and then sharpen the image with the fine focus wheel.
