is the cell's primary barrier.

separates the cytoplasm from external environment.

is an important property of the lipid bilayer, in which it only allows certain molecules to move into and out of the cell.

PASSAGEWAY OF CERTAIN MOLECULES

CHANGE CONFORMATION TO TRANSPORT MOLECULES

DETECT INVADING PATHOGENS

BINDING OF MOLECULES TO TRIGGER RESPONSES

This consists of a network of protein fibers that gives the cell its structural framework.

These consist of helically arranged globular proteins called .

is a helix of a-tubulin and B-tubulin subunits.

They consist of long fibers of __ protein, making them the thinnest cytoskeleton.

• They help facilitate cell and organelle movement. • They can help change the shape of the cell.

• Helps maintain cell shape • Anchors the nucleus provide structural integrity to the plasma membrane

This is where all different subcellular structures are suspended.

is a rigid structure that surrounds the cell membrane. • It helps maintain the shape of cells and prevent them from bursting.

Most bacteria have cell wall made up of___.

The cell wall in some fungi consists of ___.

In plant cells, the cell wall consists of mesh-like ___ fibers.

___ prevent the cell from bursting should excess water is absorbed.

• This is a prominent, usually oval structure in a eukaryotic cell. • It is located in almost the center of the cell.

is the semifluid matrix.

__ separates the nucleus from the cytoplasm

___ permit the passage of ribosomal subunits and mRNA out of the nucleus into the cytoplasm.

__ are the organelles that use instructions from the nucleus, written in mRNA, to build proteins.

•__ are found in the cytosol.

___ are attached to the outside of the endoplasmic reticulum or nuclear envelope.

These serve functions similar to a warehouse and processing center, processing products of the ER.

These contain enzymes and serve as metabolic assistance to organelles and specialize in synthesizing & breaking down lipids.

These serve as a storage of water, organic nutrients,variety of salts, sugar & some weak acids.

This is known as the "powerhouse of the cell"

This is unique to plant and algae cells. This organelle perform photosynthesis.