In this lesson our instructor talks about bacteria. First she does a comparison of domain archaea and domain bacteria. Then she discusses phototrophs, autotrophs, heterotrophs, and chemotrophs. After, she talks about structure of bacteria, bacterial genomes, reproduction, and conjugation. Four complete example videos round up this lesson
Domain Bacteria is composed of
prokaryotic organisms that have a circular chromosome and do not
have histones associated with their DNA. Additional genes may be
located on small, circular pieces of DNA known as plasmids.
Although they are unicellular,
bacteria can form colonies. A biofilm is a group of bacteria
aggregated together on a substrate.
Bacteria can be divided into
gram positive and gram negative types based on the amount of
peptidoglycan in their cell walls.
Some bacteria are covered by a
capsule that helps them to evade their host’s immune system.
Flagella area a means of
motility for bacteria and are composed of a basal apparatus,
filament and hook.
Bacteria reproduce asexually
through binary fission.
During conjugation, DNA is
transferred form one bacterial cell to another. The F factor codes
for a sex pilus through which the transfer takes place.
Bacteria play an important role
in biotechnology. Through the process of transformation, bacteria
take up DNA from their environment. The bacteria can then express
the gene, producing a protein.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
The book and CD package include three full length practice exams that are presented with all questions answered and explained. The author also presents detailed reviews of all test topics and includes multiple-choice and free-response questions with answers at the end of each topic's chapter.
This book has a great topic-by topic breakdown of the 14 must-know principles with sample questions and answers for each of the subjects. Laboratory Review includes a focused review of all 12 AP laboratory exercises. Included in this is 2 full length practice tests that stimulate the actual test along with answers and complete explanations.
This book includes a comprehensive biology test topic review, covering everything from photosynthesis to genetics to evolution. Cracking the AP Biology also includes testing strategies for the grid-in and essay section, great guidance on writing a high-scoring essay, and two full length practice exams with detailed explanations.