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The Human Cell

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on 24 September 2014

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Transcript of The Human Cell

2 types of cell..........
Prokaryote
- which have no nucleus, such as bacteria
Eukaryote
- which have a nucleus, such as plant and animal cells

Task Two - What can you remember about the information discussed?
3-5 minutes.
Jot notes.
Organelles
The human cell is made up of lots of organelles. These include those labeled in the cell picture below.
We are going to look at....
Nucleus (Nucleolus, nuclear envelope/membrane, Nuclear pores)
Ribosomes
Endoplasmic Reticulum (rough and smooth)
Lysosomes
Golgi apparatus
Vacuole
Mitochondrion

The Human Cell
The basic unit of any organism

A ‘compartment’ where chemical processes occur
Release of energy from glucose
Manufacture of substances
Transporting substances
Breakdown of substances

All controlled by the nucleus

Cells are often designed to perform a particular function, so have a structure and size to suit it for its job

What is the function of a cell??
Nucleus?
Cell Membrane?
What is a cell???
Task one
Place these structures in order, from smallest to largest - 3 minutes.....
Organs cells tissue macromolecules organ system organelles molecules atoms
Cells are the basic structural and functional parts of the human body, or any living organism.


They contain many organelles which make up and operate the cell.

Many cells make up a tissue, tissue makes up an organ, organs make up an organ system and organ systems make up an organism.......Example????
The nucleus is the "brain" or information center of the cell and controls cell function.

The nucleus contain our DNA, or genetic information.
or Plasma Membrane

The cell/plasma membrane is a phopholipid bilayer which controls what enters and exits our cells.


This membrane surrounds the cell and communicates with its neighbours to detect and respond to changes in its environment.
Cytoplasm?
The cytoplasm is the area within the cell, outside of the nucleus, which is made up of a fluid called cytosol and organells, such as the nucleus.
nucleolus
Ribosomes are created here

Nuclear envelope/membrane
Double layered membrane surrounding the nucleus

Nuclear Pores
Selective entry and exist of materials in and out of the nucleus

Ribosomes
This is where proteins are produced. some ribosomes are free in the Cytosol, some are attached to the Endoplasmic Reticulum (Rough) where the proteins are then sent to the Golgi apparatus for secretion outside the cell, or to be distributed to other organelles.

Endoplasmic Reticulum
Rough
- packages proteins for the Golgi Apparatus
Smooth
- produces lipids, stores and releases calcium ions.

Golgi Apparatus
Modifies and sorts proteins for secretion or transportation to other organelles

Mitochondrion
This is where energy is produced in the form of ATP (Adenosine Triphosphate)


Task 3
Spend 10 - 15 minutes on each of the carousel tasks
1 - Use the diagram to draw your own, larger version of the cell including the organelles covered.
Use your notes to give a brief summary of the function of each of the organelles.

2- Use the play doh to create a model of the cell. Use the paper to create a key of all the organelles and their function.

3 - Create a table of the organelles and describe their function within the cell. Also create a table highlighting the cellular organisation of cells, organs etc as carried out in task one.
Lysosomes
Contains highly acidic digestive enzymes which are used to breakdown bacteria and cell debris


Vacuole
Internal "sac" used to store food and waste



http://people.eku.edu/ritchisong/301notes1.htm
Watch cell structure video
Learning Outcomes

Correctly organise cellular structures
Correctly identify the 3 basic structures within a general human cell
Describe the function of the 10 further structures within a general human cell
Correctly differentiate between Difussion,Assisted Diffusion, Osmosis, Endocytosis and Exocytosis
List at least 4 human specialised cells

Assessment One.........
Learning Outcomes recap - can you.....

Correctly organise cellular structures

Correctly identify the 3 basic structures within a general human cell

Describe the function of the 10 further structures within a general human cell

Correctly differentiate between diffusion,assisted Diffusion, osmosis, endocytosis and exocytosis

List at least 4 human specialised cells
Can you think of any specialised cells
Sperm Cell
Nerve Cell
Smooth muscle Cell
Epithelial Cell
Stem Cells
Red Blood Cells
White Blood Cells

Cell Permeability
5 Major ways in which a cell can transfer and receive substances

Diffusion
Assisted Diffusion
Osmosis
Edocytosis
Exocytosis
read through the handout on these topics
Task 4
Produce a summary of each of these methods
Show cell function video
Watch "cell song" video
Independent learning task for next week - Research the structure and function of at least one of these cells
Upload notes via the VLE
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