Eukaryotic Cell Research Paper

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PROKARYOTIC AND EUKARYOTIC CELLS

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COMPARISON OF THE STRUCTURE OF EUKARYOTIC AND PROKARYOTIC CELLS

STRUCTURE
EUKARYOTIC CELL
PROKARYOTIC CELL
Nucleus
Present
Absent
Cytoplasm
Present
Present
Mitochondria
Present
Absent
Chloroplasts
Present
Absent
Endoplasmic Reticulum
Present
Absent
Ribosomes
Relatively large
Small
Cytoskeleton
Present
Absent
Chromosomes
DNA arranged in several
DNA arranged in circular
Cell Wall
Present
Present
Cell Membrane
Present
Present
Cilia and Flagella
Sometimes present
Some have flagella, but these have a different structure from those in eukaryotic cells

ROOT HAIR CELLS

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Root hair cells …show more content…
It requires cellular energy. Eg ions, sodium, glucose and sugar.
Types of active transport
Bulk transport:
Exocytosis: a vesicle containing the molecule fuses with the inside of the plasma membrane and the molecule is expelled.
Endocytosis: The membrane recognises and binds with a molecule in its environment. The fluid membrane then forms a vesicle around the molecule, and the sac enters the cell. Phagocytosis and pinocytosis are examples of endocytosis.
Passive transport is the movement of molecules down the concentration gradient, which means movement from an area of higher concentration to lower concentration. It does not require cellular energy. Eg carbon dioxide and oxygen.
Types of passive transport:
Simple diffusion: The liquid and gas particles are persistently moving about. These particles stretch from an area of higher to lower concentration. Some particles are small enough to pass through the space between the phospholipid bilayer. Eg water, oxygen and carbon dioxide
Facilitated diffusion: Glucose and many other molecules are too big to travel across the membrane by themselves. They need to be assisted by the carrier proteins. The carrier protein lets glucose move through it by changing its shape. Eg glucose and

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