Virus

Question 1

What makes up a virus?

Answer 1

Nucleic acids core, protein coat, envelope, and spikes

Question 2

Lytic cycle

Answer 2

1.Absorption
2.Entry
3. Replication
4. Assembly
5. Release

Question 3

Lysogenic Cycle

Answer 3

1. Attachment
2. Virus DNA incorporated into cellular DNA and Copied
3. Each time cell replicates, Viral DNA is replicated
4. No symptoms until enviromental change causes it to become lytic

Question 4

Retrovirus

Answer 4

Use reverse transcription to make DNA from RNA, more likely to commit errors

Question 5

Social Conditions that promote epidemics…..

Answer 5

Traveling, war, animals, and trade

Question 6

R not factor

Answer 6

How contagious a disease is:
Less than 1- disease will die out
Equal to 1- will stay stable, won’t cause outbreak.
More than 1- Possible outbreak

Question 7

Ways viruses could be spread

Answer 7

Respiratory, skin, food, sex, touching.

Question 8

Bacterial Infections

Answer 8

Localized, antibiotics to treat, Illness due to toxins, secondary fever

Question 9

Viral Infections

Answer 9

Systematic infection, vaccines to prevent, high jacking, fever gets better.

Question 10

Outbreak

Answer 10

Small geographic area, never been seen before

Question 11

Endemic

Answer 11

specific to an area, keeps coming back.

Question 12

Epidemic

Answer 12

State/country

Question 13

Pandemic

Answer 13

Worldwide

Question 14

Ways to control spread of viral infections

Answer 14

Track and Isolate people with virus and take public health seriously.

Question 15

EPI Triad

Answer 15

Agent- what (Chickenpox)
Environment-where(Indoor enviroment)
Host- who (Humans)

Question 16

How do scientists use Epi triangle

Answer 16

To prevent disease by modifying one or more of the factors of the triangle. Breaking the triangle

Question 17

Point Source Curve

Answer 17

people are exposed over a brief time to the same source

Question 18

Continuous common source

Answer 18

people are exposed to the same source but exposure is prolonged over a period of time

Question 19

Propagated

Answer 19

no common source, outbreak spreads person to person.

Question 20

Prions

Answer 20

Infectious proteins of nervous tissue- 100% death rate, doesn’t have DNA/RNA, resistant to heating to 90 celcius, not sensitive to radiation, not destroyed by enzymes, not sensitive to protein denaturing agents

Question 21

Bacteriophages

Answer 21

Virus that infects bacteria, used for phage treatments- virus instead of antibiotics.

Question 22

Viroids

Answer 22

Virus that infects plants- RNA particle, smaller than human viruses.