Chapter 11, section 1 Viruses LT: I can describe the structure and function of a virus.

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Presentation transcript:

Chapter 11, section 1 Viruses LT: I can describe the structure and function of a virus

Agree Disagree 1._______ ________ 2._______ ________ 3._______ ________ 5._______ ________ 4._______ ________ Viruses are the smallest form of life on Earth. The flu and the common cold are caused by viruses. Viruses make you sick by taking control over your own cells. West Nile virus exists in Egypt, but has not been found yet in the United States. You can get sick from the same viral disease multiple times in your life.

I. Viruses A. Virus – tiny, nonliving particle that enters and reproduces inside a cell. B. Host Cell – cell used by a virus to reproduce

C. Viruses act like parasites by using the host cell.

II. Structure of Viruses A. All viruses have a protein coat outside and genetic material inside. B. Surface Proteins - are used to lock on to a cell membrane.

III. Virus Reproduction A. Virus inserts its genetic material into the host cell. B. The host cell is used to make new viruses, host cell is destroyed.

IV. Viral Diseases: -influenza (flu) - chicken pox - West Nile - colds - AIDS (HIV) 1. Many viruses mutate into new strains, so you can catch the disease multiple times.

Ew3g New Science: Are Viruses Living?

Agree Disagree 1._______ ________ 2._______ ________ 3._______ ________ 5._______ ________ 4._______ ________ Viruses are the smallest form of life on Earth. The flu and the common cold are caused by viruses. Viruses make you sick by taking control over your own cells. West Nile virus exists in Egypt, but has not been found yet in the United States. You can get sick from the same viral disease multiple times in your life.

Page 446 Complete 1-3

You can either complete A,B,C Will be homework if you do not complete in class.