Cell Components & Cell Membrane Flashcards
Unit 1 Lesson 4 & 5
What is the function & appearance of the Nucleus?
Large, membrane-bound organelle found in plant cells. Usually spherical or oval-shaped, located in the centre of the cell.
Stores genetic info,Ribosomes production, Cell division, Controls Cell Activities.
What is the function & appearance of the Endoplasmic Reticulum?
Groups of sacs
Manufacturing, Processing, Transporting chemical compounds
- Contains Ribosome, Producer Proteins
What is the function & appearance of the Ribosomes?
Tiny, non-membrane-bound organelles that can be found free floating or in the ER
Synthesize proteins by translating mRNA into polypeptides.
What is the function & appearance of the Golgi Apparatus?
Stack of membranes
Collect & modify chemical compounds
Packages compounds to be moved & used around the cell
How is the function of the Nucleus, Ribosome, Endoplasmic Reticulum and Golgi body are connected?
They work together together to process, synthesize, modify, and transport proteins within the cell.
Go into detail how the Nucleus, Ribosome, Endoplasmic Reticulum and Golgi body are connected?
Nucleus: makes mRNA from the DNA code for proteins.
Ribosomes: read the mRNA and synthesize proteins on the rough ER.
Endoplasmic Reticulum: folds and modifies proteins, sending them to the Golgi.
Golgi Body: packages and ships proteins to their final destination.
What is Homeostasis?
Maintaining a steady state of when it coming in and what is leaving the cell
Phospholipid bilayer is responsible for this
What is the fatty acid bilayer?
Cell membrane made up of 2 phospholipid layers, with the hydrophobic end facing inwards
Selectively permeable
What is the fluid mosaic model?
Description of the structure and function of cell membranes.
Describes how the membrane is made up of different components that float in a fluid-like pattern.
Why is cholesterol important?
It’s important bc when phospholipids are too far apart it come in between fill the space to pull them together
Also when they r too close together form the cold it goes in between to give more space
What are the 3 Intergal proteins?
Carrier Proteins
Channel Proteins
Aquaporins
What is a Carrier Protein?
Transmembrane protein
moves neutral water molecules form outside the cell to inside the cell
What is a Channel Protein?
Transmembrane protein
Allows ions to pass through the membrane
What is an Aquaporin?
Proteins that help help water move into the cell membrane
What r the 2 types of carbs found in a cell membrane and their functions?
Glycoproteins: serve as markers for other internal structures
Glycolipids : serve as sites for cell to cell communication
