AllFreePapers.com - All Free Papers and Essays for All Students
Search

Dna Molecules

Autor:   •  November 26, 2011  •  Essay  •  312 Words (2 Pages)  •  1,582 Views

Page 1 of 2

Nucleus is the large membrane organelle that contains the genetic material the form of

Multiple linear DNA molecules organized into structures called chromosomes. A nucleus

Is a group of specialized nerve cells in the brain or spinal cord. The nucleus is not always

In the middle of a cell its like in the middle of all the cytoplasm. Not all cells have nucleus.

Eukaryotic cells have an organized nucleus and you can find DNA, RNA, and Chromatin

In the nucleus of the cell.

This organelle has two major functions they are that it stores the cells hereditary material,

Or DNA, and it coordinates the cell's activities like growth, metabolism, and

reproduction. When a cell is resting not dividing the chromosomes structures called

Chromatin. Nucleus contains the nucleolus that helps to synthesize the ribosomes.

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

Most of the cells lifecycle. The nuclear envelope is perforated with the holes called

Nuclear pores these pores pass through the nucleus and cytoplasm. Building blocks

For building DNA and RNA are allowed in the nucleus but so as well as molecules

That provide the energy for forming genetic material.

Nucleolus is visible when cell is not dividing, it contains RNA for protein manufacture.

...

Download as:   txt (2.1 Kb)   pdf (59.6 Kb)   docx (11 Kb)  
Continue for 1 more page »