Shared Flashcard Set

Details

Cells
(revision for test)
16
Science
8th Grade
08/10/2015

Additional Science Flashcards

 


 

Cards

Term



What are cells?

Definition





The smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane.

Term

 

What is the difference between a unicellular organism and a multicellular organism?

Definition




A unicellular organism is made up of only one kind of cell

capable of performing all the required functions. Whereas a multicellular organism is made up of many cells.

Term


What is the difference between plant and animal cells?

Definition

 


Plant cells are larger than animal cells. Plant cells have chloroplasts unlike animal cells. Plant cells have a cell wall unlike animal cells. Vacuoles are more obvious in plant cells than animal cells i.e. large central vacuole in plant cells.


Term


What are the important oganelles found in cells?

Definition
- Nucleus
- Cytoplasm
- Mitochondria
- Chloroplasts
- Vacuole
- Cell wall
- Cell membrane
Term


What role does the nucleus play in the cell?

Definition

 

The nucleus is the cell infomation center. It contains chromosomes wich carry DNA.

Term


What role does the vacuole play in a cell?

Definition


A vacuole is the one large water filled sack in a plant cell. small vacuoles can be found in animal cells.

Term
What role does the cell wall play in a plant cell?
Definition


The cell wall is the outer boundry of a plant cell. It protects the things on the inside of the cell.

Term
What role does a cell membrance play in a cell?
Definition
A cell membrance is the outer boundry of an animal cell and the inner boundy of the plant cells. This controls what substances enter and exit the cell.
Term


What role does the mitochondria play in a cell?

Definition


Mitochondria is the power house of the cell where ATP energy is produced(cells requiring more energy will have more mitochondria).

Term
What role does the chloroplasts play in a plant cell?
Definition


Chloroplasts is where the photosynthesis happens. These give the plant its green pigmentation.

Term


What are the parts in a microscope?

Definition
[image]
Term
How do you calculate the magnification when using a microscope?
Definition

 


The total magnification is the magnification of the objective (10x/40x/100x usually, but can be something else) which is further magnified by the eye piece (typically 10x, but others exist). 

Term



What are cells, tissues and organs?

Definition

 

Cells make up tissues. Tissues make up organs, and organs make up body systems. The only difference is the level of complexity.
Term

 


What is cell respiration?
Definition



Cellular Respiration, process in which cells

produce the energy they need to survive. it includes the beaking down of food with the use of oxegyn

Term


What is cellular respiration?

Definition



The formula for aerobic cellular respiration is 
C6H12O6 + O2 → CO2 + H2O + Energy (as ATP) 

The word equation for this is: 
Glucose + Oxygen → Carbon dioxide + Water + Energy (as ATP) 

Term


What is osmosis and diffusion?

Definition



Diffusion is the movement of molecules from an area ofHigh concentration to an area of low concentration. Basically the molecules go from where they are plenty of them to where there are little. Osmosis is basically the same thing as diffusion but it deals solely with water.The movement of water molecules from where they are in high concentration to where they are in low concentration. 

Supporting users have an ad free experience!