The Cell’s Nucleus

Lecturer: Jonah Reyes (2SED-SC)

The Parts of Cell’s Nucleus

ChromosomesNuclear Envelope

Introduction

Summary

Nucleolus

Nuclear Pores

Chromosome: Greatest Data

Long strands containing hereditary materials, genes and DNA, where all of the information about biological characteristics of an organism is kept.

Nucleus: Cell’s CPU a highly specialized organelle that serves as the information processing and administrative center of the cell.

Functions: 1. it stores the cell's DNA2. coordinates the cell's activities,

which include growth, intermediary metabolism, protein synthesis, etc.

Nucleolus: Ribo-Factory

a membrane-less organelle within the 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.

Nuclear Envelope: Fencedouble-layered membrane that 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

Nuclear Pores: Gatekeeperregulate 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.

SummaryCell is the basic building block of an

organism. All living things has a cell- it is either uni or multicellular. Amazingly, this cell was controlled by an intricate system called nucleus; which controls cellular synthesis, metabolism and reproduction.

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Cellular Multimedia Archive

Mitosis Meiosis

Nucleus in Onion

DNA Replication