1. 1 Lecture 3. Physical Structures Terms •Capsid •Envelopes •Nucleocapsid •Helical •Icosahedral Great website: http://viperdb.scripps.edu/ 2. 2 Size, mass, dimensions…

1. CHAPTER 12 THE STRUCTURE AND INFECTION CYCLE OF VIRUSES© Eye of Science / Science Photo LibraryMicrobiology: A Clinical Approach © Garland Science 2. OVERVIEW 3. Viruses…

1. CHARACTERISTICS OF VIRUSES 2. Are Viruses Living or Non-living?Biologists consider viruses to be non-living because:Are not cellsDo not grow or respond to their surroundingsCannot…

Slide 11 Viruses Slide 2 2 Are Viruses Living or Non-living? Viruses are non living They have some properties of life but not others They cant maintain a constant internal…

1.CHARACTERISTICS OF VIRUSES2. Many common illnesses are caused by viruses. Viruses are easily killed by drugs such as antibiotics. Once you have contracted a specific virus,…

Slide 1 Slide 2 General properties of viruses 1-They are very small in size, from 20-300 nm 2-They contain one kind of nucleic acid (RNA or DNA) as their genome 3-They are…

Slide 1 Introduction to the Viruses: General properties of viruses: 1-They are very small in size, from 20-300  m. 2-They contain one kind of nucleic acid (RNA or DNA)…

Slide 1 Viruses A. Viruses are a unique group of biological entities 1. They are not capable of surviving without a host cell (lack metabolic machinery) 2. They do, however,…

Slide 1 Antiviral Drugs Slide 2 General Characteristics of Viruses Depending on one's viewpoint, viruses may be regarded as exceptionally complex aggregations of nonliving…

Slide 1 1 Viruses, Viroids, and Prions Slide 2 2 Are Viruses Living or Non-living? Viruses are both and neither They have some properties of life but not others For example,…