Models of cells Flashcards
What are all the different parts of a microscope?
-eyepiece
-body tube
-coarse focus knob
-nosepiece
-objectives
-stage
-fine focus knob
-mirror or lamp
What is the function of the eyepiece?
To allow the users to look through the specimen
What is the function of the body tube?
To maintain the proper distances between the eyepiece and the objectives
What is the function of the coarse focus knob?
To allow the initial focus of the specimen
What is the function of the nosepiece?
To hold the objectives in place so that they can rotate and be changed easily
What is the function of the objectives?
To magnify the specimen to different sizes
What are the functions of the stage?
-To hold the glass slide with its clip
-To allow light to pass through the specimen through its opening
What is the function of the fine focus knob?
To make a small final focus adjustment to sharpen the focus
What is the function of the mirror or lamp?
To provide a source of light to illuminate the specimen
What are all the typical possible magnification power?
4x
10x
40x
What are all the different types of cells?
Unicellular
Multicellular
What is a cell?
A cell is the basic unit of lie that can carry out all life processes
What are all the parts a typical animal cell has?
Nucleus
Cell membrane
Cytoplasm
Vacuole
What are all the parts a typical plant cell has?
Nucleus
Cell membrane
Cytoplasm
Cell wall
Chloroplast
Vacuole
What part is used to identify whether a cell is a plant cell or an animal cell?
Cell wall
What is the difference between the vacuole in animal and plant cells?
Animal cells have small and numerous vacuole
Plant cells has one large central vacuole
What is the function of the Nucleus?
-It controls all cell activities within a cell, such as growth and repair
-It helps pass on the genetic information contained in the DNA, ensuring the inheritance of traits from one generation to the next
What is the function of the cell membrane?
-Controls the movement of substances in and out of the cell
-The cell membrane is partially permeable
What is the function of the cytoplasm?
-A place where most chemical reactions take place
-Made up of mainly water
-Gel like fluid
What is the function of the Vacuole?
Stores liquids, food and waste materials
What is the function of the chloroplast?
Contain chlorophyll to absorb light for photosynthesis
What is the function of the Cell wall?
-Gives plants a regular shape
-Protects plant cells from injury
What is the differences between animal cells and plant cells?
-Plant cells has a cell wall and chloroplast while animal cells do not have a cell wall and chloroplast
-Animal cells has numerous small vacuoles while plant cell has one large and central vacuole
-Plant cells are regular shape while animal cells do not have a regular shape
What are the levels of cellular organism?
cells->tissues->organs->systems
->organism
What is the purpose of a specialized cell?
-To perform a particular task in an organism
What are the two advantages of division in labor?
-Different functions can be performed
-It ensures the smooth and efficient functioning of the organism as a whole
