Cells and Tissues Flashcards
Cells are organised into what three main regions
Plasma membrane
Nucleus
Cytoplasm
What is the basic structure of a cell?
Mitochondria, cytoplasm,nucleus and the cell membrane
The nucleus is the control center of the cell, it contains genetic material (DNA)
What are its three regions?
Nuclear membrane, nucleus, chromatin
What is the purpose of the nuclear membrane?
Barrier of le nucleus
What does a nuclear membrane contain?
Nuclear pores that allow for exchange of material with the rest of the cell.
The nucleus contains one or more ______
Nucleoli
The nucleus is composed of chromatin which is also composed of
DNA and protein
Chromatin is scattered throughout the…..
NUCLEUS
Chromatin condenses to form ______ when the cell divides
Chromosomes
What is the cell membrane?
A thin semi-permeable membrane that surrounds the cytoplasm of a cell.
What does a cell/plasma membrane consist of?
A phospholipid bilayer with embedded proteins.
Also cholesterol and glycoproteins
The cell/plasma membrane is a ______ membrane that separates the interior of all cells from the outside environment and basic function is to protect the cell from its surroundings.
Biological
What are micro villis?
Finger like projections that increase surface area for absorption.
What does a flagellum do?
Propels the cell
What are ribosomes made of?
Protein and RNA
