Cell Structure Flashcards
The function of the Cell Membrane
Determines which substance get into or out of a cell
Describe the Cytoplasm
Thick fluid, 70-90% water
The function of the Cytoplasm
This is the material in which the cell contents are suspended
Describe the Nuclear Membrane
A double membrane contains holes called Nuclear Pores
The function of the Nuclear Membrane
Separates the Nucleus from the Cytoplasm
Describe the Endoplasmic Reticulum
Pairs of parallel membranes. Connected to the Nuclear Membrane. If they have Ribosomes attached they are called “rough Endoplasmic Reticulum”
The function of the Endoplasmic Reticulum
Provides a surface for chemical reactions
Describe the Mitochondria (Mitochondrion if more then one)
Spherical and elongated structures spread through the Cytoplasm, has a double membrane, inner folded
Function of the Mitochondria
Chemical reactions that occur on its inner membrane make energy for the cell from food molecules
Describe the Centrioles
A pair of cylindrical structures usually located near the Nucleus
The function of the Centrioles
The are necessary for Mitosis (a type of cell division)
Describe the Nucleus
Usually Ovoid or spherical, contains genetic material
Th function of the Nucleus
Contains genetic material (DNA) and contains cell functions
Describe the Flagella
Whip-like Structure
The function of the Flagella
This allows the sperm cell to swim towards the ovum
Describe the Cilia/Microvilli
Short and numerous projections from the cell surface