1. Chapters 6-8

2. Viruses: -Don’t have all of the characteristics of living things, so not considered living -Classified according to the host they infect -Simply a piece of DNA or RNA surrounded by an “overcoat” called a capsid -Three types of viruses: a) bacterial, b) plant, c) animal

3. 1) Travel on dust particles or tiny water droplets in the air (ex: common cold virus, measles) 2) Contaminated food or drinking water (ex: hepatitis virus) 3) Animal or insect bites (ex: rabies) 4) Insects depositing virus onto food

4.  Virus enters the host cell and takes over the cell’s DNA or RNA and causes the cell to make more viruses. This process is called viral replication.  At some point, the viruses break open the host cell and invade more cells.  How a virus invades your body How a virus invades your body  Bacteriophage replication Bacteriophage replication

5.  All members of kingdom Monera are bacteria that:  A) are single celled (unicellular)  B) lack (do not have) a nuclear membrane  C) lack some organelles found in most cells Bacteria can reproduce very quickly and produce large colonies of billions which can be seen with the naked eye.

6.  You will need to read/skim through pages 92 -102 to find the answers, or some will be in the notes I have just given you.  Page 95: #’s 1, 2, 3, and 4  Page 100: #’s 6 and 7  Page 102: #’s 11 and 12

7.  Members of kingdom Protista:  A) Have a nuclear membrane  B) Have organelles  C) Live in wet/moist environments  Protista has three major groups:  A) Protozoans (simple animals)  B) Algae  C) Slime molds

8.  A) Pseudopods (“False feet”)  B) Cilia (Tiny hairs)  C) Flagella  (Whip-like structure)

9.  All have chlorophyll (green pigment) for photosynthesis.  Many have other pigments as well, so they come in a variety of colors. (Red, brown etc)  One celled algae are also known as plankton.

10.  A) Live on decaying material (such as rotting logs)  B) Have two life stages: reproductive and feeding

11.  A) Reproduce by spores  B) Have cell walls made of chitin (same substance that makes the shells of crabs, exoskeleton of insects)  C) Do not have chlorophyll  D) Digest their food before it is ingested =

12.  Fungi are “saprophytes”. This means that they feed on dead organisms.  They are also decomposers because they break down substances in the environment. =