The document describes a school project where students created a model of a plant cell using various foods to represent the organelles. It explains each organelle and food representation, including using icing for the cytoplasm, a snowball for the nucleus, sprinkles for the vacuole, gummy worms for the plasma membrane, and various other candies and snacks to depict structures like the mitochondria, endoplasmic reticulum, ribosomes, and golgi bodies. The students concluded that plant cells are very complex with many interacting organelles.
Discovered by an English biologist Robert Brown in 1831.
It is also know as the, “Brain of the cell” or “Control centre of the cell”
On the basis of absence and presence of nucleus cell may be divided into Prokaryotes and Eukaryotes respectively.
NUMBER- Mostly uninucleate
Binucleate – Hepatocytes,Chondryocytes, fungi
Polynucleate- Tapetal cell, myocytes
Anucleated Cell- Red Blood cell
Sieve tube element
Component of Nucleus Nuclear membrane
Nuclear pore
Nucleoplasm
Nucleolus
Chromatin
Nuclear Membrane :Also called the nuclear envelope, is a double membrane layer that separates the contents of the nucleus from the rest of the cell.
The nuclear membrane is a lipid bilayer, meaning that it consists of two layers of lipid molecules.
Outer Layer: The outer layer of lipids has ribosomes, structures that make proteins, on its surface. It is connected to the endoplasmic reticulum.
Inner Membrane: Network of fibers and proteins attached to the inner membrane is called the nuclear lamina. It structurally supports the nucleus, plays a role in repairing DNA, and regulates events in the cell cycle such as cell division and the replication of DNA.
Discovered by an English biologist Robert Brown in 1831.
It is also know as the, “Brain of the cell” or “Control centre of the cell”
On the basis of absence and presence of nucleus cell may be divided into Prokaryotes and Eukaryotes respectively.
NUMBER- Mostly uninucleate
Binucleate – Hepatocytes,Chondryocytes, fungi
Polynucleate- Tapetal cell, myocytes
Anucleated Cell- Red Blood cell
Sieve tube element
Component of Nucleus Nuclear membrane
Nuclear pore
Nucleoplasm
Nucleolus
Chromatin
Nuclear Membrane :Also called the nuclear envelope, is a double membrane layer that separates the contents of the nucleus from the rest of the cell.
The nuclear membrane is a lipid bilayer, meaning that it consists of two layers of lipid molecules.
Outer Layer: The outer layer of lipids has ribosomes, structures that make proteins, on its surface. It is connected to the endoplasmic reticulum.
Inner Membrane: Network of fibers and proteins attached to the inner membrane is called the nuclear lamina. It structurally supports the nucleus, plays a role in repairing DNA, and regulates events in the cell cycle such as cell division and the replication of DNA.
CBSE Class 8 / VIII General Ccience Power Point Presentation
Prepared By
Praveen M Jigajinni
DCSc & Engg,PGDCA,ADCA,MCA,MSc(IT),MTech(IT), M.Phil (Comp Sci)
For Any Queries Please feel free to contact:
Email Id : praveenkumarjigajinni@gmail.com
Cell No: 9431453730
CELL - STRUCTURE AND FUNCTIONS
discovery of cell
cell shape
cell size
cell number
parts of cells
Cells Types
Plant Cell
Animal Cell
Differences Between Plant and Animal Cells
Levels of organization of living being
Cell Division And cell Growth
CBSE Class 8 / VIII General Ccience Power Point Presentation
Prepared By
Praveen M Jigajinni
DCSc & Engg,PGDCA,ADCA,MCA,MSc(IT),MTech(IT), M.Phil (Comp Sci)
For Any Queries Please feel free to contact:
Email Id : praveenkumarjigajinni@gmail.com
Cell No: 9431453730
CELL - STRUCTURE AND FUNCTIONS
discovery of cell
cell shape
cell size
cell number
parts of cells
Cells Types
Plant Cell
Animal Cell
Differences Between Plant and Animal Cells
Levels of organization of living being
Cell Division And cell Growth
Living organisms are made up of one or more cells.•Cells are the most basic unit of organisms which canfunction on their own. Cells carry out life processes suchas respiration, division, excretion and growth.•Cells are the building blocks of an organism.•
In this presentation, the presenter has described the basics of Cell Biology. The features of a cell, types of cells, functions, components of cells etc. This will be very handy for class 7-9th standard students.
2. • The cell is a very complex unit
of life that every living thing
must have in order to be
considered alive.
• The cell has many different
parts, or organelles, that
contribute to the function of
the cell.
• If the organelles run
smoothly, the cell will run
smoothly, and the thing that
has the cell, will be healthy.
By: Braxton Giavedoni
3. • The cytoplasm is the
area of the cell
within the plasma
membrane.
• The cytoplasm holds
all of the organelles
in the cell so they
will not move out of
place.
• We chose green
icing for the
cytoplasm because
it would cover the
whole cell. Also
because it is a plant
cells and most
plants are green.
Braxton Giavedoni
4. • Gives the cell its shape
• Provides protection
• Acts as a filter
• We used green icing for
this because it could be
made into a green
outer layer, like a cell
wall.
By Nathan Lingenfelter
5. • The nucleus is like the brain of the cell
• It controls all cell activity
• It also contains DNA
We used a “fast-ball” because it has similar characteristics; a
creamy inside which represents the nucleolus and it is the same
shape as a nucleus. By: Nathan Ray
6. Nucleolus
This is the
nucleolus
- It is a control center in
the middle of the
nucleus
- central location of the
production of
ribosomes.
- We used the center
filling of a snowball to
represent how the
nucleolus is located
inside of the nucleus.
7. • The vacuole is one of
the biggest parts of
the cell.
• The vacuole in the
plant cell stores water
and nutrients. It also
helps with the
removal of waste.
• We chose the
sprinkles for the
vacuole because we
could cover a large
space, and the
vacuole in most
pictures is blue.
Braxton Giavedoni
8. • Separates the inside of
the cell from the
outside world
• Made of phospholipids
• Allows things to exit
and enter the cell
• We used gummy
worms for this because
they could be lined up
to form something that
looked like a
membrane.
By Nathan Lingenfelter
9. • The mitochondria are
like the power plants
of the cell
• The mitochondria
convert energy into
forms that are usable
by the cell
We used candy orange slices because they look similar to the
mitochondria of a actual plant cell. By: Nathan Ray
10. - system of internal membrane inside
the cell which move proteins and
other substance through the cell
- Synthesis of lipids
- We used twizzlers to represent the
smooth endoplasmic reticulum
because if you take them apart and
lay them down together, they look
like tubes, like the smooth E.R.
11. • The rough endoplasmic
reticulum is a strand by
the nucleus that holds
ribosomes.
• The rough ER holds many
materials and minerals
making transportation
through the cell.
• We used licorice because
the ER looks like a little
strand just coiled up.
Braxton Giavedoni
12. • The ribosomes can be free
flowing or located in the
rough endoplasmic reticulum.
• The main function of the
ribosomes is to arrange the
amino acids to help with the
cell, and ultimately, the body.
• We used the M&Ms as the
ribosomes because
ribosomes look like
small, sphere shaped balls
that carry around material.
Braxton Giavedoni
13. • Packages proteins
before they are sent to
their destination
• We used a Fruit Roll-Up
for this because if you
fold it up, it looks like a
golgi body.
By Nathan Lingenfelter
14. • A plant cell is very complex
• A plant cell also has many parts that replicate
many of the foods that we consume.
• We learned a lot about the organelles of a
plant cell and came to the conclusion that
things are more complex than the seem!