These enzymes are called molecular scissors which are essential in making internal cuts in a DNA molecule or vector at specific sites.

• A. Polymerase

• B. Restriction enzymes

• C. Restriction proteins

• D. Plasmid

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Genetic engineering

What do we call the new molecule after the process of ligation wherein the vector plasmid is joined with the gene of interest?

• A. Chimeric DNA

• B. Gene of interest

• C. Recombinant DNA

• D. All of these

It is a double-stranded, self-replicating, circular DNA molecule present in bacteria that is widely used as a gene cloning vector.

• A. Gene

• B. Plasmid

• C. Phagemid

• D. Ribonucleic acid

During the transfer of the recombinant plasmid into a host cell which is commonly a bacterium, the recombinant bacterium will undergo cloning. Which of the following is involved in gene cloning?

• A. Division

• B. Replication

• C. Translation

• D. Transcription

A polymerase chain reaction is used to?

• A. produce mutations in bacteria.

• B. determine the sequence of DNA.

• C. make copies of a DNA sequence.

• D. selectively breeds plants and animals.

Which of the following describes recombinant DNA technology?

• A. Mating of organisms with desirable qualities.

• B. Insertion of genes into cells that makes the cells into “factories” to make products

• C. Enhancing or disrupting the traits of a target organism either mating or molecular technique

• D. All of the above

Which of the following illustrates classical breeding?

• A. A farmer choose a breed of a cow of greater milk production

• B. The use of bacteria to produce human insulin

• C. The insertion of cloned genes to plant cells

• D. All of the above

Which of the following is/are example of genetic engineering?

• A. A farmer choose a breed of the cow for greater milk production

• B. The use of bacteria to produce human insulin

• C. The insertion of cloned genes to plant cells

• D. Cross-pollination of squash flowers

A biotechnologist wants to enhance the size of duhat fruit because research shows that it can lower blood sugar but is very expensive in the market. What could be the possible source organism which contains the gene that is responsible for the development of large fruits?

• A. Dayap

• B. Guava

• C. Marang

• D. Pomelo

Why genetic engineering is beneficial to society?

• A. It improves crop varieties to meet the demand of increasing human population

• B. Production of human proteins using bacteria is a great help in the field of medicine

• C. Transgenic plants and transgenic animals play a great role in our economic

• D. All of the above