Prokaryotes - P rokaryotes Prokaryotes Structure...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Prokaryotes Structure Reproduction Nutrition Prokaryotes The prokaryotes include bacteria and archaea, which are fully functioning cells. Discovered by Antoine van Leeuwenhoek who invented the first microscope in the 1600’s. A single spoonful of earth can contain 10 10 prokaryotes. Range in size from 1-10 μ m in length and .7-1.5 μ m in width, larger than viruses. Prokaryote Structure Lack a eukaryotic nucleus. Have outer cell wall containing peptidoglycan, wall prevents rupture due to osmotic changes. Some move by means of flagella, and adhere by fimbriae. Lack membranous organelles. Contain nucleoid with single chromosome containing circular DNA. May have accessory ring of DNA (plasmid). Reproduction in Prokaryotes Prokaryotes reproduce asexually by means of binary fission. Generation time as short as 12min, mutations occur, prokaryotes are haploid so mutations are immediately subject to natural selection. Conjugation – one of 3 means of prokaryotic genetic recombination, occurs
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Prokaryotes - P rokaryotes Prokaryotes Structure...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online