Cells, tissues, organs and organ systems Flashcards
How many life processes does all organisms carry out?
Seven
What are the seven life processes?
Movement, reproduction, sensitivity, growth, respiration, excretion and nutrition
What is the function of the cell surface membrane?
It keeps cell together and controls what goes into and out of the cell?
What is the function of the nucleus?
It controls the cell
What is the function of the cytoplasm?
Where activities happen, including respiration (which occurs in the mitochondria)
What is the function of the chloroplast?
It contains chlorophyll to trap sunlight for photosynthesis
What is the function of the cell wall?
It is made of cellulose and provides support
What is the function of the vacuole?
Storage space
What is a microscope used for?
To magnify tiny things such as cells
How do you find out the total magnification?
Magnification of objective lens x magnification of eyepiece lens
The object you look at. What is this called?
A specimen. (It has to be thin to let light get through it)
What is the first step to use a microscope?
Place the smallest objective lens over the hole in the stage
What is the second step to use a microscope?
Turn the focusing wheel to move the objective lens close to the stage
What is the third step to use a microscope?
Place the slide on the stage
What is the fourth step to use a microscope?
Adjust the light source or mirror