biology (cell organelles)

• what is the outer membrane of the nucleus called?


  nuclear membrane
• where is chromatin found?


  chromatin are strings of DNA and protein found in the nucleus
• what is Rough Endoplasmic reticulum (RER)


  flattened sacs called cisternae- that synthesizes proteins and packages them for transportation.
• what does the Rough ER have attached to it?

  ribosomes
• what is the Golgi Apparatus?

  modifies proteins and lipids and packages them into vesicles
• what are lysosomes?

  lysosomes break down worn out cell parts and contain digestive enzymes
• what is the digestive enzyme that are in lysosomes?

  Lysozyme
• what is the mitochondria?

  mitochondria is the site of aerobic respiration and is also where ATP is produced.

  and also provide energy
• where is ATP produced?

  in the mitochondria
• structure of the mitochondria?

  • double membrane + has many folds
  • contains matrix fluid
  • has its own DNA
• what is the role of ribosomes?

  to make proteins
• what does the Smooth endoplasmic reticulum do (smooth ER)

  synthesize lipids
• cell walls are only found in....

  plant cells.
• what is the outer layer that protects the cell?

  cell surface membrane
• structure of chloroplasts:

  -has outer membrane, inner membrane and thylakoid membrane

  • has stoma (fluid inside)
  • contains green pigment called chlorophyll
  • contains DNA
• what are centrioles?

  2 hollow tubes at right angles to each other that are made of mircotubles
• what process are centrioles involved in?

  cell division
• what type of cells are amyloplasts found in ?

  plant cells
• what is the role of an amyloplast?

  produce and store starches
• what is the plasmodesmata

  the plasmodesmata, allows the movement of substances between cells
• what type of cell is the plasmodesmata found in?

  plant cells