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Презентация на тему Plant Cell Nucleus

The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. This organelle has two major functions. It stores the cell's hereditary material, or DNA, and it coordinates the
Agrobiological FacultyGroup 4.2Prepared by Maria MatvienkoPresentation on the topic : Plant Cell Nucleus The nucleus is a highly specialized organelle that serves as the information ChromatinChromosomesNucleolusNuclear EnvelopeNuclear PoresStructure of nucleus Packed inside the nucleus of every human cell is nearly 6 feet The nucleolus is a membrane-less organelle within the nucleus that manufactures ribosomes, The nuclear envelope is a double-layered membrane that encloses the contents of The nuclear envelope is perforated with holes called nuclear pores. These pores Thank you for attention!
Слайды презентации

Слайд 2 The nucleus is a highly specialized organelle that

The nucleus is a highly specialized organelle that serves as the

serves as the information and administrative center of the

cell. This organelle has two major functions. It stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, which include intermediary metabolism, growth, protein synthesis, and reproduction (cell division).

What is a Nucleus ?


Слайд 3 Chromatin
Chromosomes
Nucleolus
Nuclear Envelope
Nuclear Pores
Structure of nucleus

ChromatinChromosomesNucleolusNuclear EnvelopeNuclear PoresStructure of nucleus

Слайд 4 Packed inside the nucleus of every human cell

Packed inside the nucleus of every human cell is nearly 6

is nearly 6 feet of DNA, which is divided

into 46 individual molecules, one for each chromosome and each about 1.5 inches long. Packing all this material into a microscopic cell nucleus is an extraordinary feat of packaging. For DNA to function, it can't be crammed into the nucleus like a ball of string. Instead, it is combined with proteins and organized into a precise, compact structure, a dense string-like fiber called chromatin.

Chromatin/Chromosomes


Слайд 5 The nucleolus is a membrane-less organelle within the

The nucleolus is a membrane-less organelle within the nucleus that manufactures

nucleus that manufactures ribosomes, the cell's protein-producing structures. Through

the microscope, the nucleolus looks like a large dark spot within the nucleus. A nucleus may contain up to four nucleoli, but within each species the number of nucleoli is fixed. After a cell divides, a nucleolus is formed when chromosomes are brought together into nucleolar organizing regions. During cell division, the nucleolus disappears.

Nucleolus


Слайд 6 The nuclear envelope is a double-layered membrane that

The nuclear envelope is a double-layered membrane that encloses the contents

encloses the contents of the nucleus during most of

the cell's lifecycle. The space between the layers is called the perinuclear space and appears to connect with the rough endoplasmic reticulum. The envelope is perforated with tiny holes called nuclear pores. These pores regulate the passage of molecules between the nucleus and cytoplasm, permitting some to pass through the membrane, but not others. The inner surface has a protein lining called the nuclear lamina, which binds to chromatin and other nuclear components.

Nuclear Envelope


Слайд 7 The nuclear envelope is perforated with holes called

The nuclear envelope is perforated with holes called nuclear pores. These

nuclear pores. These pores regulate the passage of molecules

between the nucleus and cytoplasm, permitting some to pass through the membrane, but not others. Building blocks for building DNA and RNA are allowed into the nucleus as well as molecules that provide the energy for constructing genetic material.

Nuclear Pores


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