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Parts of a Cell By Esteban

Plant Cell vs. Animal Cell

Nucleus

Cell Membrane

Mitochondria

Endoplasmic Reticulum

Ribosomes

Lysosome

Golgi complex

Cell Wall

Chloroplasts

The nucleus is an important part of the cell. All Plant and animal cells have nucleus. The nucleus contains DNA. The nucleus also contains a dark area called the nucleolus. The nucleolus is responsible for making ribosomes. Materials cross the double membrane through pores.

The Golgi complex is an organelle that packages and distributes protein. Lipids and proteins are delivered to the Golgi complex to modify them to do different jobs. The final products are enclosed in piece of of the Golgi complex's membrane. It pinches off to form a small bubble. The bubble transports its content to other parts of the cell or out of the cell.

As you may know, all plant cells have cell walls. Animal cells don't have cell walls. Cell walls give support to the cell and is a rigid structure. The cell walls of plants, fungi, archaea, and bacteria are made of different materials. For example, plants and algae have cellulose fiber in the cell wall.

Click here for a video about animal cells and plant cells

Plant cell and animal cells are different in two ways. Plant cells have chloroplasts which photosythesis takes place. Animal cells do not have chloroplasts and don't go through photosythesis. Plant cells also have cell walls. Cell walls are rigid sturctures that protect the plant cell. Animal cells do not contain cell walls. Animal cells only have cell membranes.

All plant and animal cells have a cell membrane. The cell membrane is a protective barrier that separates the cells content from the cell's environment. Cell membranes are made up of proteins and lipids. The cell membrane contains two layers of phospholipids which is a liquid. Each phospholipid has a hydrophobic end and a hydrophilc end.

All plant cells and animal cells have mitochondria. Mitochondria is the main power source of a cell. Mitochondria's purpose is to break down food to release energy. The energy released by mitochondria is stored in a substance called ATP. In mitochondria, the mitochondria contains two membranes. They are the inner membrane and the outer membrane. The inner membrane is where the ATP is produced.

Many chemical reactions happen in the endoplasmic reticulum or ER. It is where proteins, lipids, and other material are made. The ER is either rough or smooth. The rough ER is found near the nucleus. The rough ER also contains ribosomes. The rough ER makes the cell's protein and the delivers these proteins throughout the cell. The smooth ER lacks protein. The smooth ER makes lipids, and breaks down toxic materials that could damage the cell.

Lysosomes are responsible for digestion in a cell. They contain digestive enzymes. They destroy worn out cells or damaged organelles, gets rid of waste,and engulf foreign envaders. Lysosomes are very helpful to the human body. They get rid of waste and get rid of foreign invaders which could harm us. If lysosomes weren't there, then the foreign invaders could harm us.

Organelles that make protein are called ribosomes. Ribosomes are the smallest organelle in a cell. There are more ribosomes than any other organelle in a cell. Ribosomes make protein by assembling chains of amino acids. Ribosomes are usually found in the rough ER. The smooth ER does not contain ribosomes. Ribosomes are also not covered by a membrane.

As you already now, all plant cells have chloroplasts. Animal cells do not have chloroplasts. Chloroplast is an organelle where photosynthesis takes place. Chloroplasts have two membranes and their own DNA. Chloroplasts are green. They are green because chloroplasts contain chlorophyll. Chlorophyll is a green pigment that makes the chloroplast green. It also traps energy of sunlight.

Click here for more information about cells

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