Biology Anything With Cells Flashcards
Parts of the cell
What does the nucleus contain?
The cells DNA
Cell theory
What is spontaneous generation?
Everyone thought things just grew out of mid air
Cell theory
Provide 2 examples of spontaneous generation
Mice form from dirty clothes/ corn husks
Maggots form from rotting meat
Cell theory
List 5 characteristics of al living things
They have to have a lifespan
Grow in size, reproduce, and are able to repair ourselves
Can sense and respond to changes in the environment
Require energy
Produce wastes
Parts of the cell
What is the cell membrane made of?
A double layer of lipids long chain molecules found in fats
Parts of the cell
What does a cell membrane do?
Allows different substances to move through it
Cell theory
What is an organism?
All living things are organisms
Cell theory
What is the completed cell theory?
All organisms are composed of one or more cells
This cell is the basic unit of life in all living things
All cells are produced by the divisions of preexisting cells
Parts of the cell
Where does the Golgi body receive proteins from?
The endoplasmic reticulum
Parts of the cell
What does the Golgi body do?
Modify sorts and packages these proteins for delivery throughout the cell or outside the cel
Parts of the cel
What is the internal network of fibres called
Cytoskeleton
Parts of the cell
What is the purpose of vesicles?
Transport substances through the cell
Parts of the cell
What is considered the “power house” of the cell?
Mitochondrion
Parts of the cell
What’s another word for the Golgi body?
Apparatus
Parts of the cell
Where is the nucleus located in the cell?
Is wrapped in the nuclear envelope, which contains pores to allow transport of materials
Parts of the cell
What is the purpose of the vacuole and vesicle?
Stores nutrients, wastes and other substances needed by the cell
Parts of the cell
What does the central vacuole store in plant cells?
Stores water for the cell
Parts of the cell
What are the sites called where proteins are assembled?
Ribosomes
Parts of the cells
Do lysosomes breakdown?
Yes, invading bacteria and damaged cel organelles
Parts of the cell
What is the endoplasmic reticulum made of?
A series of interconnected small tubes that carry materials through the cell
Parts of the cell
What is the cytoplasm?
A jelly like substance that fills the cell and surround the organelles
The cell cycle
How many cel checkpoints are in the cell cycle?
There are 3 checkpoints for the cell to determine if it should continue the cell cycle
Parts of the cell
What are the smaller parts of a cel called?
Organelles
The cell cycle
What is vital to normal growth and development of a cell?
Controlling the rate and timing is vital to normal growth and development
Parts of the cell
What does the rough endoplasmic reticulum do?
Associates with making proteins
The cell cycle
How many skin cells do we loose approximately each year?
Approximately 3kg
Parts of the cell
Is cytoplasm found in all cells?
Yes
Cell theory
What is biology?
Biology is a natural science concerned with the study of life and living organisms including the structure, function, growth, evolution, distribution and taxonomy
Parts of the cell
What is the cytoskeleton made up of?
Protein filaments it helps maintain cell shape
The cell cycle
What are the skin cels replaces by?
Cell division
Parts of the cell
What does the nucleus do?
Controls all the activity in a cel including growth and reproduction
Parts of the cell
What are the possible functions of organelles
Intake of nutrients Exchange of gasses Movement Waste removal Growth reproduction Response to stimuli
Parts of the cell
What happens in the lysosomes
This is where digestion takes place
The cell cycle
When do the DNA checkpoints occur?
G1
G2
Mphase
Parts of the cell
What does the smooth endoplasmic reticulum do?
Production of fats and oils
The cell cycle
What are the three reasons the cell will stop at a checkpoint?
There are not enough nutrients to support cell growth
The DNA has not replicated properly
The DNA is damaged
Parts of the cell
What are ribosomes?
Small dense looking organelles that may be attached to the rough endoplasmic reticulum or free in the cytoplasm
The cel cycle
What happens at each checkpoint?
Special proteins halt the cycle until they receive signals that allow it to proceed
Parts of the cell
What does chlorophyll use energy from the sun for?
To convert carbon dioxide and water into sugar and oxygen in a process called photosynthesis
The cell cycle
How many phases are in the cell cycle?
2 phases each with sub phases
Parts of the cell
What happens in the mitochondrion?
Reactions occur in these organ cells to convert the chemical energy in sugar into energy that the cell can use
The cell cycle
What do the molecules control?
The control the whole cell cycle
Parts of the cell
What are thylakoids and where are they found?
Thylakoids collect light energy from the sun, they are found in the chlorophyll
Cell cycle
What is the function of molecules?
The function of molecules many of them proteins, carry messages between cells
Parts of the cell
What is the cell wall?
A rigid frame around the cell
The cell cycle
Does cell division need to be controlled for the cell to function?
Yes or the organism won’t function properly
Parts of the cell
What are lysosomes filled with?
Enzymes
Cel theory
What is the development of cell theory?
All plant parts are made of cells
Parts of the cell
What does the cytoplasm contain?
Nutrients required by the cel to carry in its life process
The cell cycle
How long does it take for the skin cell to reach the surface once it divides
It takes about 2 weeks to move to the surface
Parts of the cell
What does the cell wall do?
Provides strength protection and support to the cell
The cell cycle
How many sub-phases are in the M-phase?
2 mitosis and cytokinesis
Parts of the cell
Are all cells identical?
No not all cells are identical
The cell cycle
How many sub phases are in interphase?
3
G1
G2
Sphase
Parts of the cell
What does the chloroplast contain?
A green substance called chlorophyll
The cell cycle
What checkpoints is the most important? What happens to many cells after that checkpoint?
For many cells the most important is after mphase. Most s leave the cycle and take on specific roles. Specialization.
