Quizzes exam 4

Question 1

Food poisoning is caused by the ingestion of food containing ________.

Answer 1

Microbial Toxins

Question 2

______ causes the most severe cases of food infection, is able to avoid degradation by macrophages, and spreads cell-to-cell using actin-based motility.

Answer 2

Listeria

Question 3

This viral disease is transferred to humans from the bite of an animal infected. There is a vaccine for the disease, but once symptoms begin to show there is a 100% mortality rate.

Answer 3

Rabies

Question 4

________ is a Biosafety Level 4 virus that causes viral hemorrhagic fever and is transmitted from animals to human by inhalation of infected rodent feces.

Answer 4

Hantavirius

Question 5

Lyme disease incidence increases with local deer populations because deer ________.

Answer 5

Are breeding grounds for the ticks that transmit Lyme disease

Question 6

Yersinia pestis, the causative agent of plague, is transmitted from one to host to another by ________, an arthropod vector.

Answer 6

Fleas

Question 7

At what stage in the Plasmodium life cycle does the infected person start to see symptoms of malaria?

Answer 7

Merozoite

Question 8

Symptoms of ________ include fever, headache and neurological issues leading to sleep cycle disruption.

Answer 8

Trypanosomiasis

Question 9

West Nile Virus is a flavivirus that invades the nervous system. Infected individuals most commonly have ______.

Answer 9

No symptoms at all

Question 10

Treatment of tetanus includes the administration of ________ to neutralize toxins in the body and ________ to prevent additional toxin production.

Answer 10

Anti-toxins, antibiotics

Question 11

Industrial microbiology typically relies on the ______ scale production of ______ value commercial products.

Answer 11

Large, Low

Question 12

You are studying a new anti-cancer compound (secondary metabolite) produced by an industrial microbe. At what phase of the growth cycle would production of your anti-cancer compound be highest (i.e. when is the best time to harvest)?

Answer 12

Stationary phase

Question 13

______ produces amino acids on an industrial scale, including the flavor enhancer MSG and the essential amino acid lysine (added to bread and cereal).

Answer 13

Corynebacterium glutamicum

Question 14

The removal or inclusion of ______ (grape skins, stems and seeds) during wine production determines whether the final product is white or red wine.

Answer 14

Pomace

Question 15

Reverse transcriptase creates complementary DNA (cDNA) from mature mRNA and allows the expression of eukaryotic genes in prokaryotic hosts because ______.

Answer 15

The resulting cDNA does not contain introns

Question 16

Which genetically engineered organism was modified by replacing a growth hormone promoter sequence and became the first genetically modified, FDA-approved animal for human consumption?

Answer 16

AquAdvantage Salmon

Question 17

There is no evidence of life during the first half-billion years after the formation of Earth. This is mostly likely to ______ during that time.

Answer 17

Extremely hot temperatures

Question 18

As oxygen appeared in the atmosphere, ______ also accumulated, which formed a protective barrier that protects the Earth from ______.

Answer 18

Ozone / UV radiation

Question 19

Eukaryotic organelles, such as the chloroplast and the mitochondria, were directly derived from _______.

Answer 19

Bacterial symbionts

Question 20

The application of DNA sequence data to reconstructing the phylogeny (tree) of life result in ______.

Answer 20

The discovery of Archaea,
The change to a 3 domain system,
The recognition of a greater diversity of microbial lineages compared to plant and animal lineages