Bacteria & Virus Review

Which statement regarding viruses is true?

• Viruses do not contain DNA

• A virus can only reproduce inside of a living cell

• Viruses are generally larger than cells

• Viruses are unicellular

Change in species is described as a process that usually occurs over long periods of time. Yet, even though antibiotics have only been widely used for fifty years, scientists recognize that overuse of antibiotics has led to antibiotic-resistant strains of bacteria. The reason this can occur in a relatively short span of time is that -

• travelers carry bacteria around the world

• bacteria reproduce rapidly

• there are many different types of bacteria

• bacteria are very small

One of the reasons that viruses are nonliving is that they...

• Cannot reproduce by themselves
• Have no DNA or RNA
• overproduce too quickley to be attacked

Unicellular, Prokaryotic organism is known as a?

• Virus
• Bacteria
• Fungi

Tags

NGSS.MS-LS1-1

Bacteria reproduce through the process of?

• Host cells
• regeneration
• Binary fission

Tags

NGSS.MS-LS3-2

Which of the following only applies to viruses?

• Living
• Requires a host cell to replicate
• can be treated with antibiotics

Which of the followig only applies to Bacteria

• Nonliving
• Requires Host cell to replicate
• Eukaryotic
• Unicellular

Retroviruses are made of

• RNA only
• Proteins Only
• DNA and a protein coat
• RNA and a protein coat

Live bacteria are found in milk, cheese and yogurt

• True
• False

Reasons that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They cannot make proteins
• all of the above