Ch.19 Bacteria and Viruses

The study of microscopic organisms is called...?

• Microscopy
• Botany
• Microbiology
• Awesome

Differences between Eubacteria and Archaebacteria include:

• Cell wall
• Cell membrane
• DNA sequences
• All of these

Which of the following is a characteristic of prokaryotes?

• Large size
• Nucleus
• Cell wall
• Multicellular

Prokaryotes usually have linear chromosomes.

• True
• False

Prokaryotes often have small, extrachromosomal loops of DNA called...?

• Plasmids
• Plasma
• Nucleus
• Fruit Loops

Which type of prokaryotes have peptidoglycan in their cell walls?

• Eubacteria
• Archaebacteria

Which type of prokaryotes are more similar to eukaryotes?

• Eubacteria
• Archaebacteria

Name the shape of these bacteria.

• Cocci
• Bacilli
• Spirilli

These bacteria do not have much peptidoglycan in their cell wall and have an extra outer membrane. Are they Gram-Positive or Gram-Negative?

• Gram-Positive
• Gram-Negative

What shape are the Gram-Positive bacteria in this picture?

• Cocci
• Bacilli
• Spirilli