The Cell
What is a cell?
The smallest working unit of a living thing (organism)
What is an example of a plant cell?
Onion cell
Name any 3 structures in the animal cell
Ribosomes, Cell membrane, Nucleus, Cytoplasm, Mitochondria
Why is a light microscope called a light microscope?
Light is needed to pass through object being observed
What is an organism?
Something that displays the characteristics of life (living things)
What is an organism?
Something that displays the 7 characteristics of life
When observing a plant stain using a light microscope, which stain do we use to view it?
Iodine stain
Carries genes, which controls the activities of the cell
Name any 3 parts of the microscope
Eyepiece, Nosepiece, Stage, Objective lens, coarse focus, fine focus, light, diaphragm
What are the 7 characteristics of life?
Reproduction, Movement, Respiration, Responses, Nutrition, Growth and Excretion
Name the characteristics of life
Reproduction, Movement, Respiration, Response, Nutrition, Growth and Excretion
Name any 3 cell structures of a plant cell
Chloroplasts, Mitochondria, Ribosomes, Cell membrane, cell wall, vacuole, Nucleus, cytoplasm
What is a cell structure that animal cells lack but is present in plant cells?
Cell wall
What is the function of the coarse focus?
To bring the object into focus (make it more clear)
What does the Response characteristic mean?
Give an example of a type of cell found in the human body
Muscle cell, Sperm cell, nerve cell, red or white blood cells
What is one cell structure that a plant cell has that an animal cell lacks?
Cell wall
Why do animal cells lack a cell wall?
Cell wall makes cell rigid- animal cells can be lots of different shapes
What is the function of the diaphragm?
Adjusts the light coming through the hole in the stage?
Mouth, throat, stomach, large intestine, small intestine
What is an example of a unicellular organism?
Bacteria
What is the main function of the chloroplasts?
Carries chlorophyll (green pigment)
What stain is used to observe animal cells using a light microscope?
Methylene blue stain
What is total magnification if 10x objective lens is used?
100
What does the Respiration characteristic mean?
Releasing energy from food