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Challenge Yourself. Take My Quiz (Click Here). Question 1. 1. In 1973, what did biochemists Stanley Cohen and Herbert Boyer do? a. Constructed an organism that was part bacterium and part frog. b. Made recombinant DNA consisting of a frog rRNA gene and part of a plasmid. c. Both a and b.

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Challenge Yourself

Take My Quiz

(Click Here)


Question 1

1. In 1973, what did biochemists Stanley Cohen and Herbert Boyer do?

a. Constructed an organism that was part bacterium and part frog.

b. Made recombinant DNA consisting of a frog rRNA gene and part of a plasmid.

c. Both a and b.

d. None of the above.


Question 2

2. Which is the correct order of the steps involving genetic engineering?

a. Producing recombinant DNA - Cleaving DNA - Cloning cells - Screening cells.

b. Cleaving DNA - Producing recombinant DNA - Cloning cells - Screening cells.

c. Cleaving DNA - Cloning cells - Producing recombinant DNA - Screening cells.

d. Cleaving DNA - Producing recombinant DNA - Screening cells - Cloning cells.


Question 3

3. During the experiment of Cohen and Boyer what types of enzymes were used to cleave the DNA?

a. Catalytic enzymes.

b. Restriction enzymes.

c. Digestive enzymes.

d. Proteolytic enzymes.


Question 4

4. When the DNA is cleaved the remaining ends are called what?

a. Adhesive ends.

b. Incohesive ends.

c. Ligated ends.

d. Cohesive ends.


Question 5

5. pSC101 was the first plasmid to do which of the following?

a. Carry a gene from a frog into a paramecium.

b. Carry a gene from a bacterium into a frog.

c. Carry a gene from a bacterium into a paramecium.

d. Carry a gene from a frog into a bacterium.


Question 6

6. After adding tetracycline to the bacterial cultures, bacterial cells without vectors were eliminated. However, what happened to the surviving cells.

a. They were allowed to reproduce.

b. They led to the formation of identical cells.

c. Clones with the recombinant DNA.

d. All of the above.


Question 7

7. Southern Blot uses radioactively labeled _____ or single-stranded DNA to identify a specific gene.

a. RNA

b. rRNA

c. mRNA

d. DNA


Question 8

8. Gel electrophoresis can be used to separate which of the following?

a. Nucleic acids.

b. Proteins.

c. Both a and b.

d. None of the above.


Question 9

9. RFLPs are detected and analyzed by which of the following?

a. Southern blotting.

b. Gel electrophoresis.

c. Southern hybridization.

d. Both a and c.


Question 10

10. A polymerase chain reaction is used to do make unlimited copies of what?

a. rRNA.

b. Genes.

c. Polymers.

d. RNA.


Question 11

11. The Human Genome Project is a research effort to identify and locate the entire collection of genes in a human cell. Results of the Human Genome Project could help researchers answer questions about which of the following?

a. Molecular evolution.

b. Probe details of gene organization and control.

c. Produce and catalog proteins of interest.

d. All of the above.


Question 12

12. Erythropoetin is a genetically engineered medicine. It is used to do which of the following?

a. Stimulate differentiation and growth of various cell types.

b. Used as a treatment for dwarfism.

c. Stimulate red blood cell production.

d. Activate and stimulate different classes of white blood cells.


Question 13

13. Vaccines are solutions containing harmless versions of a pathogen or its toxins. Genetic engineering has allowed vaccines as well as _______ to be manufactured easily.

a. Proteins.

b. RNA.

c. Both a and b.

d. None of the above.


Question 14

14. One obvious way to cure genetic disorders was to give the diseased individual a working copy of the gene, which was malfunctioning. Until recently, this was thought of as not practical for which of the following?

a. The defective gene was difficult to identify and isolate.

b. It was necessary to find a way to keep the altered cells or their offspring alive in the body for a long time.

c. It was hard to transfer a healthy copy of such a gene into the cells of body tissues that use it.

d. All of the above.


Question 15

15. Diabetes Mellitus I is an illness that occurs when the body can’t make sufficient amounts of which of the following?

a. Insulin.

b. Mellitus.

c. Interleukins.

d. TNF.


Question 16

16. What was the main reason that genetic engineering was not possible for plants for so many years?

a. Unlike bacteria, plants have few viruses or plasmids that can perform the role of bacteria in genetic engineering.

b. Genetic engineers lacked a suitable vector to carry the gene into plant cells.

c. Both a and b.

d. None of the above.


Question 17

17. The Ti plasmid caused what in plants?

a. Wilting.

b. Undergrowth

c. Overgrowth.

d. Tumors.


Question 18

18. As well as offering benefits to the environment, the development of glycophosphate-resistant crops allows what to occur?

a. They lower the costs of producing a crop.

b. Allow the plants to survive in more extreme conditions.

c. Allows the production of more products from the crop.

d. Allows the land to become more fertile and less dry.


Question 19

19. Genetic engineering has led to the development of crops resistant to insect pests. Such crops do not need to be sprayed with pesticides. Which of the following is the best example of who or what is benefited the most?

a. The farmers.

b. The environment.

c. Both a and b.

d. None of the above.


Question 20

20. Which element is used in many fertilizers in order to replenish the soil? (hint: genetic engineering has not allowed genes for ____ fixation from bacteria into crop plants).

a. Carbon.

b. Oxygen.

c. Hydrogen.

d. Nitrogen.


Congratulations

You have successfully completed our quiz!

The information contained in this quiz came from:

Johnson & Raven. Biology Principles & Explorations. Holt, Rinehart and Winston. Orlando, FL. 1998

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