chapter 25 review

chapter 25 review - Lecture 11 Chapter 25: Protists I....

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 11 – Chapter 25: Protists I. Eukaryotic Cells formed 2.2 bya evolved from prokaryotic cells (endosymbiotic process) A.Chloroplast photoautotroph living inside heterotroph Red Chloroplasts endosymbiotic event Multiple secondary endosymbioses led to chloroplasts in euglena and brown algae B.Mitochondria aerobic heterotroph living inside anaerobic heterotroph cannot grown on their own; dependent on material in nucleus probably originated from endosymbiosis size similar to bacteria reproduce by splitting – reminiscent of binary fission contain circular DNA ribosomes similar to the size of ribosomes in prokaryotes base sequence of RNA produce protein double membrane expected when one cell engulfs another cell D.Other organelles evolved from infolding of plasma membrane E.Primary Endosymbiosis ancient eukaryotic cell engulfed a cyanobacteria, which survived and evolved into a
Background image of page 1

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

View Full DocumentRight Arrow Icon
chloroplast mitochondria surely evolved before chloroplasts F.Secondary Endosymbiosis a heterotrophic eukaryotic cell engulfed a eukaryotic cell with chloroplasts cell survived and evolved into a chloroplast surrounded by three membranes II. Protists most are unicellular some form colonies, loosely connected groups of cells some are coenocytic, consisting of a multinucleate mass of cytoplasm some are multicellular A.Ancestral Protists Plants – photoautotrophs – algae Animals – Ingestive Autotrophs Fungi – Absorptive Heterotroph B. Life Cycle (Animal) Multicellular
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

chapter 25 review - Lecture 11 Chapter 25: Protists I....

This preview shows document pages 1 - 3. Sign up to view the full document.

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