All Free Biology MCQs with Answers
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19844 questions · page 534 of 1985
5331. Which of the followings is model plant whose gene sequencing has been completed?
- A. Yeast
- B. Pea
- C. Arabidopsis
- D. Plum
Explanation: Arabidopsis is model plant whose gene sequencing has been completed
Correct answer: Arabidopsis5332. The gene sequence of which of the following chromosomes was completed in 1999:
- A. 12
- B. 18
- C. 21
- D. 22
Explanation: The DNA sequence of human chromosome no. 22, one of the smallest human chromosomes, was completed in 1999
Correct answer: 225333. Which of the followings helped scientist to pinpoint disease causing genes?
- A. PCR
- B. Recombinant DNA
- C. RFLP
- D. Probe
Explanation: The map for each chromosome is presently incomplete, and in many instances, scientistsrely on the placement of RFLPs. These sites eventually allow scientists to pinpoint disease-causing genes because a particular RFLP and a defective gene are often inheritedtogether
Correct answer: RFLP5334. The number of base sequences in man is:
- A. 2 billion
- B. 3 billion
- C. 4 billion
- D. 5 billion
Explanation: There are three billion base pairs in the human genome
Correct answer: 3 billion5335. The human genomic project will take how many volume of encyclopedia:
- A. 100
- B. 200
- C. 300
- D. 400
Explanation: There are three billion basepairs in the human genome and it is estimated it could take an encyclopedia of 200volumes, each with 1000 pages, to list all of these.
Correct answer: 2005336. Each fragment of DNA should be how many nucleotides:
- A. 500 nucleotide
- B. 1000 nucleotide
- C. 3000 nucleotide
- D. 4000 nucleotide
Explanation: Each piece of DNA should be of 1000 nucleotides
Correct answer: 1000 nucleotide5337. The copy of DNA pieces in human genomic project is made by:
- A. PCR
- B. Recombinant DNA
- C. RFLP
- D. Probe
Explanation: The copy of DNA pieces in human genomic project is made by PCR.
Correct answer: PCR5338. The entire genome has been sequence by the company of:
- A. J. Craig Venter
- B. Hamilton
- C. Sanger
- D. Maxam
Explanation: The company of J. Craig Venter has sequenced the entire genome.
Correct answer: J. Craig Venter5339. Organisms with foreign genes are called:
- A. Recombinant
- B. Hybrids
- C. Transgenic
- D. Modified
Explanation: Organisms with foreign genes are called transgenic
Correct answer: Transgenic5340. Transgenic bacteria are produced in large vats called:
- A. Thermocycler
- B. Bioreactors
- C. Reactors
- D. Electrophoresis
Explanation: Bioreactors. Recombinant DNA technology is used to produce bacteria that reproduce in large vats called bioreactors. Transgenic Products. If the foreign gene is replicated and actively expressed, a large amount of protein product can be obtained.
Correct answer: Bioreactors