Lesson 7 - Evolution of Microbial Life

Introduction
 
"Viruses are non-cellular, and they reproduce only inside living cells. The life-cycle of a bacteriophage describes, in general, the life cycle of a virus in any type of cell, including ananimal cell. Of special concern are viruses that cause diseases in plants and animals including humans. Prokaryotes are cellular but lack a true nucleus and other membrane organelles. They all reproduce by binary fission but have varied means of nutrition, including photosynthesis. The cyanobacteria release oxygen into the atmosphere, and the archaea are well know for living in extreme environments. Prokaryotes are extremely plentiful and play n important role in the environment, in addition to causing human diseases."
 
Getting Started "The first organic molecules could have originated in the atmosphere, or perhaps at hydrothermal vents. The discovery of RNA enzymes (ribozymes) suggests that RNA could have formed the first genes. A protocell (before the first true cell) surrounded by a plasma membranecould store genetic information and metabolize."


Focus on Learning
 
Use the course competencies listed below to focus your learning and use the lesson objectives to sharpen that focus.
 
Competencies By the end of the lesson , you should be able to:

  1. Describe and analyze the processes involved in evolution and their impact on all living things.
 
Objectives

To master the competencies, you should seek to understand how:

  1. Viruses reproduce in living cells.
  2. The first cells originated on early Earth.
  3. Both bacteria and archaea are prokaryotes.


Reading Assignments
 
Reading Assignment Reading is a very important component of an internet course. Read the assigned pages from your textbook before proceeding to the Activities, Study Help, and Assessment Sections.
 
Textbook Read the Assignment in Mader Concepts of Biology Textbook:
Evolution of Microbial Life: Chapter 16


Activities
 
Complete the Animation Activities. Feel free to open your book and notes as you work on them. The information in these activities is very helpful when completing the Animation Quiz that follows.
 
Animations
Complete the Animation Activities by Clicking the Links Below:
Animation Activity 1 - Retrovirus
Animation Activity 2 - T4 Viruses Attack
Animation Activity 3 - Bacterial Conjugation
Animation Activity 4 - Transformation
 
Complete the Virtual Lab Activity. Feel free to open your books and notes as you work on it. Complete the activity by reading the instructions, performing the lab exercise, downloading the post lab quiz and report and filling it out. Be sure to complete and print out the data table embedded in each lab exercise. The information in this lab activity is very helpful when completing the Virtual Lab Quiz and Worksheet that follow.
 
Virtual Lab
Complete the Virtual Lab Activity by Clicking the Link Below:
Virtual Lab Activity: Classifying Using Biotechnology


Study Help

 
It's time to review and practice what you have learned from your reading and instruction activities. Slide presentations, Chapter Outlines, Flashcards, and Student Learning Outcomes are provided to help you study. Feel free to open your book and notes as you use them.
 
Slide Presentation
Log-in to BlackBoard, navigate to the Textbook Reading Folder, click into the Reading Review Slide Presentation Folder, and click the Slide Presentation Link:
Slide Presentation - Chapter 16 Mader Web Presentation
 
Practice Quiz
Log-in to BlackBoard, navigate to the Textbook Reading Folder, and click the Reading Practice Quiz Link:
Reading Practice Quiz - Chapter 16


Assessing Your Learning

 
It's time to assess what you have learned from your reading and instruction activities. The following reading, animation, virtual lab, and essay quizzes are graded assignments. Feel free to open your book and notes as you work on them. Be sure to submit your work as you complete it. Good luck!
 
Reading Quiz
Log-in to BlackBoard, navigate to the Textbook Reading Folder, and click the Reading Quiz Link:
Reading Quiz - Chapter 16
 
Animation Quiz
Log-in to BlackBoard, navigate to the Animations Folder, and click the Animation Quiz Link:
Animation Quiz - 7
 
Virtual Lab Quiz
Log-in to BlackBoard, navigate to the Virtual Lab Folder, and click on Virtual Lab Quiz Links:
Virtual Lab Quiz and Worksheet - 7
 
Essay Quiz
Log-in to BlackBoard, navigate to the Essay Quiz Folder, and click on the Essay Link:
Essay Quiz - 7



Related Web Sites

 
Here is a website that I like. Click the icon to pursue this topic on the internet:

Have You Met The Objectives For This Lesson?