Organelles Flashcards
What contains cell membranes?
Cell membranes contain a variety of biological molecules, notable lipids and proteins, cholesterol is another important component in the membrane.
Function as a semi-permeable barrier, allowing a very few molecules across it.
The cell membrane
What is the cell wall?
A cell wall is a rigid layer that surround the cell membrane giving the cell support, protection and a filtering mechanism.
Cell wall is found in animal cells. True or false?
False, the cell wall is only found in plant cells and some prokaryotic cells.
What is the nuclear envelope?
The nuclear envelope is the double membrane of the nucleus that encloses the genetic material.
The nuclear envelope only appear in eukaryotic cells. True or false?
True, it only has it the eukaryotic cells, not in prokaryotic cells.
What is the nuclear pores function?
Nuclear pores allows the transport of water-soluble molecules across the nuclear envelope.
What is it and what is the function of the nucleolus?
The nucleolus is a sub-organelle of the cell nucleus, and the main function is the production and assembly of ribosome components.
What is it and what is the function of the nucleus?
The nucleus is found in most eukaryotic cells, is a membrane enclosed organelle that contains most of the cell’s genetic material, and its function is to regulate the integrity of this genes and control the activities of the cell, and mediate the replication of the DNA during the cell cycle.
What is the function of the Golgi apparatus?
Is an organelle found in typical eukaryotic cells, its function is to modify proteins made on the RER (rough endoplasmic reticulum), formation of secretory vesicles (exocytosis) and the formation of lysosomes (intracellular digestion) its like a post office the Golgi, it package and labels items and send them to different parts of the cell
What is the endoplasmic reticulum?
Is an organelle found in all eukaryotic cells, is made by a network of tubules, vesicles and cisternae its function is the translation, folding and transport of the proteins to be used in the cell membrane, or to be out from the cell and production of macromolecules.
What are the two types of endoplasmic reticulum and what they do?
Its the rough endoplasmic reticulum that works with the Golgi to send the proteins to their proper destinations and the smooth endoplasmic reticulum that do the metabolic processes like synthesis of lipids and drug detoxification.
What are the ribosomes?
Is a cell sub-organelle that build proteins from genetic instructions.
What is the mitochondria?
Is a organelle inside the cell found in most eukaryotic cells, they generate the ATP, used as a source of chemical energy.
Is an organelle found in plant cells and eukaryotic that conduct photosynthesis, they absorb the sunlight with water and carbon dioxide to produce sugars or ATP, is like the mitochondria of the plant cells.
Chloroplasts
