Question

What is an auxotrophic bacteria? A bacteria that cannot complete a metabolic pathway after a pair-wise feeding experiment O A bacteria that cannot complete a metabolic pathway due to a defective enzyme. A bacteria that can use its metabolic pathways to photosynthesize. A bacteria that can use its metabolic pathways to produce prodigiosin.

Please help me answer these, thank you!

Answer 1

Answer1

The bacteria that cannot complete a metabolic pathway due to a defect in the enzyme.

Explanation - Auxotrophy is the type of bacteria that are incapable to synthesize a specific organic compound that is essential for its growth. Option C is incorrect because it is the characteristics of Phototrophic bacteria and not Auxotrophic. Option D is incorrect because it is not necessary that only auxotrophic bacteria produce prodigiosin

Answer 2

Using electricity to run macromolecules through gel-like medium to separate by size

Explanation - Agarose gel electrophoresis is a method used in molecular biology to separate a mixed population of macromolecules such as DNA depending on its molecular weight. Option C is incorrect because it doesn't break the molecule, it only separates it. Option D is incorrect because it is generally used to separate DNA rather than protein and lipids.

Answer 3

Distance travelled and known size of the band is graphed and that graph is determined to use fragment size based on distance travelled of the unknown.

Explanation - To determine the curve, fragments of DNA were separated by agarose gel. Then a standard curve is created on the graph to relate fragment size to the distance that is migrated. Hence the size of unknown fragments can be determined after the distance they migrated is measured.

Answer 4

Enzyme created in Lab for genetic engineering and biotechnology.

Explanation - A restriction enzyme is an enzyme that cuts the DNA into various fragments at specific sites known as restriction sites. In the biotechnology industry, restriction enzymes are used to map DNA also these enzymes are used in cloning and in genetic engineering. Options C and D are incorrect because restriction enzymes have no role in viral infection.

Answer 5

Product of enzymatic reaction that is also a substrate for another enzymatic reaction.

Explanation - In enzymatic reaction, an intermediate is molecular that is formed from the enzyme-substrate reactants and have a capability to reacts further to give desired products of a chemical reaction. Options C and D are incorrect because it is neither defective product or product that is useful for only bacteria.

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