Viruses

Multiple Choice

Which of the following correctly describes viruses?

• non-living because they grow and develop

• living because they can use energy

• non-living because they cannot reproduce on their own

• living because they can maintain homeostasis

Multiple Choice

Viruses are cells. 

• True 

• False

Multiple Choice

What do viruses need to reproduce?

• they need genetic material

• They need a host cell

• They need  bacteria

• They need insulin

Multiple Choice

Reasons that viruses are considered to be nonliving is because

• They are not made of cells

• They cannot reproduce on their own

• They do not exchange gases

• all of the above

Multiple Choice

What feature do viruses have in common with animal cells?

• ability to form proteins at the ribosomes

• existence of lipids in cell membranes

• presence of genetic code in nucleic acid

• production of energy by a mitochondrion

Multiple Choice

Which best describes the basic structure of a virus?

• nucleic acid strand surrounded by a protein coat

• a tail surrounded by a protein coat

• a tail surrounded by a carbohydrate coat

• nucleic acid strand surrounded by a carbohydrate coat

Multiple Choice

All viruses contain-

• nucleic acids

• ribosomes

• mitochondria

• cytoplasm

Multiple Choice

What part of the phage is the DNA?

• A

• B

• C

• D

Multiple Choice

A(n) _____ is a virus that enters a bacterial cell.

• endospore

• decomposer

• plasmid

• bacteriophage

Multiple Choice

During the lytic infection by a virus, the host cell is-

• destroyed

• copied

• passed on to the lysogenic cycle

• not affected

Multiple Choice

What process is this?

• phagocytosis

• lytic cycle

• lysogenic cycle

• formation of antibodies

Multiple Choice

What is shown here?

• Lysogenic Cycle

• Lytic Cycle

• Binary Fission

• Conjugation

Multiple Choice

The lysing of a cell occurs in which phase?

• 1

• 2

• 4

• 5

Multiple Choice

What is the 1st step of virus infection?

• Entry

• Attachment

• Replication

• Assembly

Multiple Choice

An outbreak of a virus occurs when ....

• someone dies from the virus

• the virus spreads to more and more hosts

• the virus spreads to more than one organ

• symptoms of the virus get worse

Multiple Choice

What is the difference between Pandemic and Epidemic?

• Epidemic - A rapidly spreading disease that affects the local population.

  Pandemic - A rapidly spreading disease that affects the world population.

• Epidemic - A rapidly spreading disease that affects the world population.

  Pandemic - A rapidly spreading disease that affects the local population.

Multiple Choice

Vaccines can be used to prevent viral infection by

• destroying any viruses that enter the host.

• creating a blocking protein on the cell.

• creating an immune response in the host.

• preventing replication of the virus.

Multiple Choice

structure of the virus are

• capsid and nucleic acid

• capsid and uncles

• capsid, DNA and RNA

Multiple Choice

Why do we need a new flu vaccine every year?

• Influenza mutates quickly and new strains result

• Our bodies rid themselves of the vaccine yearly

• When it gets warm outside, vaccines do not work anymore

• Cooler temps often cause vaccines to mutate and not be effective

Multiple Choice

When a virus mutates this:

• Helps the virus adapt to a new host

• Can have no effect, be detrimental, or can be beneficial and help the virus adapt to its new host

• Causes an outbreak

• gives the virus super powers like shooting lasers out of it's eyes

Multiple Choice

Each of the following statements is true except -

• viruses infect living cells

• viruses can replicate without a host

• viruses can cause illness

• viruses come in different types

Multiple Choice

Viruses are not living, because they

• are not cellular.

• have no DNA.

• do not reproduce.

• lack a nucleus.

Multiple Choice

Cell theory states:

all living things are composed of one or more cells;

a cell is the smallest unit that still retains the properties of life;

and new cells only come from cells that already exist.

Based on cell theory, which of these answer choices would describe one reason a virus is considered nonliving?

• A virus is too small to be considered a cell.

• A virus does not contain genetic material.

• A virus does not have a nucleus.

• A virus cannot reproduce itself without a host

Multiple Choice

Which statement describes ALL living things?

• They are composed of one or more cells.

• They must reproduce sexually.

• They have organ systems to carry out the processes of life.

• They are capable of making their own food.

Multiple Choice

Examine the model of a viral structure shown here. Select the choice that accurately compares and contrasts the structures of viruses and cells.

• Both cells and proteins have capsid structures surrounding their genomes.

• Both cells and viruses have protein molecules.

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

The ability to grow.

• Living Organisms

• Viruses

• Both

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

Ability to reproduce independently.

• Living Organisms

• Viruses

• Both

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

May mutate and evolve.

• Living Organisms

• Viruses

• Both

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

Protein coat instead of membrane.

• Living Organisms

• Viruses

• Both

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

Can have a DNA genome.

• Living Organisms

• Viruses

• Both

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

Not made of cells.

• Living Organisms

• Viruses

• Both

Multiple Choice

Is this characteristic define as living organisms, viruses, or both:

Needs a host.

• Living Organisms

• Viruses

• Both

Multiple Choice

Identify the correct characteristic of life: 

Fox chasing a rabbit—rabbit running away

• Energy

• Cells

• Responds to a Stimuli

• Maintains Homeostasis

Multiple Choice

Which characteristic of life describes a person touching a hot stove and jerking their hand back.

• Organization

• Maintaining Homeostasis

• Respond to a Stimuli

• Grows and Develops

Multiple Choice

Identify the correct characteristic of life:

A lizard can change colors to blend in.

• Levels of Organization

• Adaptation

• Homeostasis

• Grows & Develops