what is a cell without a nucleus and what is a strutue within the cytoplasm of a cell havein a specific funtio

Question

its home work help
plez help

Answer 1

Most of the cells in our bodies have nuclei. An exception are the red blood cells (erythrocytes) of mammals; these cells lose their nuclei during their transformation into functional erythrocytes, and they acquire a biconcave shape.

There are many structures immersed the cytoplasm that have specific functions. These include ribosomes (protein synthesis), mitochondria (oxidation, or aerobic respiration), the smooth and rugose endoplasmic reticula (these synthesize more complex biomolecules) and Golgi apparatus (that "packs" the substances made in the cell to be exported). However, the question may be referring specifically to the cytoskeleton, a system of microtubules and microfilaments that participates in the movements of organelles within the cell, attachment to other cells, and other functions, and are essential during cell division.

Here's a nice page with illustrations and information on cell components:
http://www.beyondbooks.com/lif71/4.asp

Answer 2

I don't think red blood cells have nuclei, or nucleuses, or whatever the proper plural form is. And in a general cell, there are several little organelles that have specific function. For example, the mitochondria produce energy, and lysosomes digest stuff or explode to make the cell die. And there are other organelles also.

Answer 3

Prokaryotes