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What are Organelles?
A specialized cellular part, basically the GUTS of the cells.
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Define Cell Membrane
The cell membrane sorrounds the cell, holding in the fluids and materials that the cell needs to surive. Basically the SKIN OF THE CELL.
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What is the cell membrane made out of?
The cell membrane is made of phospholipid bilayer.
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What is Phospholipid Bilayer?
Phospholipid bilayer is a two layer arrangent of phosphate and lipid molecules that form a cell mebrane. It is embedded with protein that allows good things to enter the cell and makes bad things stay out.
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On a cellular level, why do we get sick?
The protein gates in the cell membrane are resposible for letting good stuff in and keeping bad stuff out. If the gates recognize something thats BAD as something GOOD it is let into our system, in turn having a negative affect (possibly sickness) on us.
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Who discovered the first plant cells in 1665?
Robert Hooke
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What is Cytoplasm?
Cytoplams is a jelly-like substance that fills in the extra space within the cell. Not only does it protect the organelles, it puts pressure on the cell walls so it can stay in a circular shape.
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What is the Necleus?
The necleus is the BRAIN of the cell. Contained within the nuclear evelope, the necleus contains all of the cells genetic information (DNA).
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Do all cells have a nucleus?
NO, single simple cells don't, however they are doomed to a very sad and boring life.
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Function of Ribosomes
Ribosones are crucial to cells as they are repsosible for producing proteins. Without ribosomes, your cell is doomed.
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Where are ribosomes produced?
The NECLEOLUS
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What is a Necleur Envelope?
The necleur envelope is a membrane that contains pores for material transfer, it is the outer shell of the entire NECLEUS.
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Vesicles
Vesicles are small transport bubbles created by "pinching off" the cell membrane. They are resposible for all movement within and out of cells.
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Endoplasmic Reticulum (ER)
This is essentially the WORKSITE. These tube like structures come in two types; smooth and rough.
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What is the difference between Smooth ER and Rough ER?
Rough ER is covered in ribosones (proteins) and assist with the transportation of materials around the cell. Smooth ER is not convered in ribosones, instead they make lipids and fats. Smooth ER helps package the material into vesicles for transport.
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Golgi Apparatus/Golgi Body
Think of this as a FIVE STAR RESTRAUNT. Vesicles arrive here with "ingredients", then the golgi appartatus takes the raw materials and makes a new, usable version of it. It then repackages it and sends it to wherever it needs to go. The golgi apparatus is also resposible for making lysosomes.
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What happens to a Vesicle when it reaches the Golgi Apparatus?
After the internal materials from the vesicle are removed, the actual vesicle is absobored into the golgi appartatus, or the "chef".
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What are Lysosomes?
Lysomoses are specialized vesicles that contain digenstive enzymes. Created in the golgi apparatus, they are ACID BALLS and a vells alternative to a stomach.
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What is Mitochondria?
Mitcochondria converts stored chemical energy in glucose into energy the cell can use- specifically in the form of ATP. Mitochondria shatters the bonds that are keeping the cells from using the glucose they have. This reaction is called CELLULAR RESPIRATION.
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Cellular Respiration:
The process of converting glucose into usable energy
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What are Centrioles?
Centrioles are small churro looking structures that ensure the necleus divides properly during cell division. After cell division, the centrioles move copies of the original genetic information to the correct location in each of the new cells.
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What are Vacuoles? (Animal Cells)
Vacuoles are storage sacks that contain water, food particles, and minerals. Basically storage rooms so that cells don't DIE if times get rough.
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Plant cells contain all of the same cells as animal cells, EXCEPT FOR:
Lysosomes and centricles
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Vacuoles (Plant cell)
Plant cells contain one MASSIVE vacuole that takes up majority of the cell, providing turgor pressure to keep the plant cell rigid.
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Cell Wall (Plant cells ONLY)
- Plants are covered in a rigid CELL WALL composed of cellulose. The cell wall provides protection and helps the cell maintain its shape. (like BODY ARMOUR!)
- - When we eat plants, this is the hard crunch that we bite through.
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What is Cellulose?
Found in the cell wall, cellulose is a molecule that humans cannot digest. That being said, it is extremely important because when we consume it acts as a pipe scraper and clears our digestice track.
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Chloroplast (Plant cells ONLY)
Chloroplast is an organelle that uses solar energy and carbon dioxide to manufacture glucose, essentially it blows up water and recombines it into sugar. This is the process is known as PHOTOSYNTHESIS, and is made possible because of chlorophyll (green pigment located within the chloroplast)
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Prokaryotic Cells
- PRO= NO. Prokaryotic cells are cells "before necleus" and refers to cells of very simple organisms that do not have a necleur membrane (such as bacteria).
- - These cells still have DNA, it is just loose and floats around.
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Eukaryotic Cells
EU= TRUE! Eukaryotic means '"true nucleus" and refers to cells containing a nucleur membrane.
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