A schematic representation of a neuron. (A) Note the orientation of the dendrites, axon, and nucleus. The f irst few microns of the axon as it emerges from the axon hillock represent the initial segment of the axon. (B) Components of the neuron: the cell membrane, nucleus, nuclear membrane, nucleolus, and the organelles.
Cell Organelles (Structure and Function) Matching Worksheet - Cells. This is a worksheet on cell organelles and their functions. There are 45 questions set up in a matching format. All questions deal with either the structure of the organelle or the functions of the organelles. Students will choose from a word bank of 21 organelles. $
Onion Root-tip Cells (Allium sp.) undergoing Cell Division (Mitosis). From top left to bottom right: the chromosomes condense; appear as long thread-like structures (Prophase). They then align along centre of the cell (Metaphase). Each chromosome consists of two identical sister chromatids that separate and are pulled to opposite ends of the cell (Anaphase). Nuclear membranes then form around the two daughter nuclei as chromosomes de-condense (Telophase). The cell then divides…
#Bacteria, single-celled #microorganisms that lack nuclear membrane and are metabolically active and divide by binary fission. Superficially, bacteria appear to be simple forms of life but in fact, they are sophisticated and highly adaptable. Bacteria multiply at rapid rates and different species utilize different enormous variety of #hydrocarbon substrates, like phenol, rubber, and petroleum.