This set of Biochemical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Cellular Information – Transposons”.
1. _________ is the element which can change the position DNA sequence within a genome.
a) Transformation
b) Episomes
c) Transposons
d) Transduction
View Answer
Explanation: Transposons is the element which can change the position DNA sequence within a genome. This can create mutations and sometimes reverse them.
2. In which year was these transposable elements found?
a) 1983
b) 1986
c) 1989
d) 1972
View Answer
Explanation: In the year 1983, Barbara McClintock discovered these transposable elements as jumping genes. She also received a noble prize for this discovery.
3. The first jumping genes were discovered in which of these species?
a) Silk
b) Maize
c) Wheat
d) Potato
View Answer
Explanation: Barbara McClintock discovered first transposable elements in Maize. Her research was on the broken chromosomes of maize.
4. In which year did Barbara McClintock receive her Nobel Prize?
a) 1985
b) 1995
c) 1993
d) 1983
View Answer
Explanation: She was awarded with a Nobel Prize in the year 1983. Almost thirty years after she published her findings.
5. What whole percentage of genome do the transposable elements make up in maize?
a) 60%
b) 70%
c) 80%
d) 90%
View Answer
Explanation: Approximately 90% of the maize genome is made up of transposable elements. Transposable elements are responsible for the mass amount of DNA present in maize.
6. What whole percentage of genome do the transposable elements make up in humans?
a) 44%
b) 54%
c) 64%
d) 74%
View Answer
Explanation: Approximately 44% of the human genome is made up of transposable elements. Transposable elements are responsible for the mass amount of DNA present in humans.
7. The two mechanisms used by theTransposons for transposition is copy & paste and cut & paste.
a) True
b) False
View Answer
Explanation: The two mechanisms used by theTransposons for transposition is copy & paste [Class I TEs] and cut & paste [Class II TEs].
8. Which of this enzyme is used for transcription of short interspersed nuclear elements?
a) Reverse Transcriptase
b) RNA polymerase II
c) RNA polymerase III
d) RNA polymerase IV
View Answer
Explanation: short interspersed nuclear elements do not encode for the enzyme reverse transciptase. They are transcribed with help of RNA polymerase III.
9. Which of these is the most common TE in humans?
a) Met sequence
b) Alu sequence
c) Leu sequence
d) Thr sequence
View Answer
Explanation: Alu sequence is the most common TE in humans. This sequence is of the length of 300 bases.
10. Which of these is a disease caused by TEs?
a) Hemophilia A
b) Down’s syndrome
c) Turner’s syndrome
d) Sickle cell anemia
View Answer
Explanation: Hemophilia A is a disease caused by Transposons. The other diseases are Hemophilia B, Porphyria and etc.
11. Cancer genes can be identified using transposons genes.
a) True
b) False
View Answer
Explanation: Cancer genes can be identified using Sleeping beauty transposons system. These genes are identified using an insertional tag.
Sanfoundry Global Education & Learning Series – Biochemical Engineering
To practice all areas of Biochemical Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
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