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Objective 15 Quiz

Last updated over 4 years ago

7 questions

4

4

4

4

4

4

4

Question 1

1.

Which of the following occur when Sars CoV-2 enters our body? (select all that apply)

Sars CoV-2 uses our cells ribosomes to build copies of its protein coat and spikes

Transcription (DNA--> RNA)

It uses its proteins to enter cells of our muscular system

The Sars CoV-2 DNA is replicated  

It uses its proteins to enter cells of our respiratory system (lung, nose, throat)

The Sars CoV-2 RNA is replicated

Translation (RNA-->Protein)

It uses its proteins to enter cells of our nervous system (brain and spinal cord)

Question 2

2.

When a sample gets to the lab for the RT-PCR test, first the genetic material is extracted from the collected cells. Then this mixture consists only of a person's DNA and the Virus RNA (if present). Reverse transcription is completed to "convert" any viral RNA (if present) into DNA. Once this step is complete PCR is used to make thousands of copies of the DNA so that it can be searched more easily for the viral presence. (answer the following and please number your answers accordingly)
1. How is the sample for the RT-PCR test acquired? In other words, how is this test given?
2. What part of Sars CoV-2 does RT-PCR identify the presence of?
3. In our cells, weak hydrogen bonds between base pairs are broken by helicase during DNA replication, in the PCR machine, what is used to break these bonds and separate the strands?
4. What is a con/drawback of the RT-PCR test?

Question 3

3.

True story: In East Aurora, New York at an acupuncture clinic, a woman offered Covid-19 tests. When people called to make appointments, she told people (including myself) they could use the test to detect if they currently had Covid-19 and were contageious. However, people found out she was using a test that would not work for that! She got shut down and in a lot of trouble for false advertising/ false test results.

She most likely was using which test? (make sure it is also properly matched to what it tests for)

RT-PCR- Proteins our body makes to attack Sars CoV-2

Antigen- Sars CoV-2 spike proteins

Antibody- RNA

Antibody- Proteins our body makes to attack Sars CoV-2

Antigen- RNA

RT-PCR- Sars CoV-2 spike proteins 

RT-PCR- RNA 

Antibody- Sars CoV-2 spike proteins

Antigen- Proteins our body makes to attack Sars CoV-2

Question 4

4.

When Covid-19 vaccines enter our body all of the following take place EXCEPT...

Helper T cells produce cytokines that act as an alarm for other immune cells to gear up for action and come to the scene

Macrophages phagocytize (swallow) the fat coated RNA make its spike proteint to present it for other cells to recognize as foreign

Plasma B cells produce antibodies that recognize the spike proteins and attack them when they enter the body

Memory B cells produce antibodies that recognize the viral RNA and remember it 

Question 5

5.

What differentiates the Covid vaccines from other vaccines?

The new Covid Vaccine contains viral RNA, other vaccines contain dead or weakened viruses

The new Covid vaccine causes macrophages present the viral spike proteint to present it for other cells to recognize as foreign, while the other vaccines do not. 

The new Covid vaccine causes plasma B cells produce antibodies that recognize the spike proteins and attack them when they enter the body, while other vaccines do not. 

The new Covid vaccine causes helper T cells produce cytokines that act as an alarm for other immune cells to gear up for action and come to the scene, while the other vaccines do not. 

Question 6

6.

Select all that apply (you don't need to explain your answer)

Cheese

Lettuce

Orange 

Tomato

Spinach

Carrot

Banana 

Question 7

7.

DNA strands with the following numbers of base pairs are placed in the wells of the gel shown. 90bp, 400bp, 800bp, 1,100bp. Which of the letter marks where the 400bp strand would be found once the gel is turned on?

A

C

B

D