Restriction enzymes are among the most useful tools for molecular biologists. They are examples of endonucleases. How do they differ from general endonucleases?

What will be an ideal response?


Ans: Restriction enzymes cleave the target DNA only at specific base sequences, unlike most endonucleases which cleave DNA randomly.

Biology & Microbiology

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A major, genetically determined change in the antigenic character of a pathogen is called antigenic drift.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Which system involves plasma proteins activated

when an organism’s pattern receptors become bound to anything? a. cytokine b. complement c. suppressor d. enhancer e. coagulation

Biology & Microbiology

Salamanders are members of the order:a

Apoda. b. Caudata. c. Anura.

d. Tetrapoda. e. Squamata.

Biology & Microbiology

Which statement is TRUE?

A) The phosphotransferase system belongs to ABC systems. B) The phosphotransferase system transfers phosphate into the cell. C) The phosphotransferase system is a type of group translocation. D) The phosphotransferase system is a typical symporter. E) The phosphotransferase system hydrolyzes ATP to transfer Glucose.

Biology & Microbiology