When using lacZ containing vectors, colonies containing intact vector turn blue

Indicate whether this statement is true or false.


TRUE

Biology & Microbiology

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Which of the following is NOT used in gene therapy to transfer cloned DNA into human cells?

A. Retroviruses B. Fusion of cells with DNA-containing vesicles C. Microinjection D. Transformation E. Chemical means to get the DNA through the cell membrane

Biology & Microbiology

Pattern recognition receptors (PRRs) are found on which of the following cells?

A) macrophages B) bacteria C) neutrophils D) macrophages and neutrophils

Biology & Microbiology

Which of the following is a correct statement about sympatric or allopatric speciation?

a) Polyploidy is a type of sympatric speciation. b) Sympatric speciation might occur if a body of water shrinks, leaving the fish isolated in separate smaller ponds. c) Allopolyploidy is a type of allopatric speciation. d) Allopatric speciation can be called "speciation without geographic isolation." e) Allopatric speciation may occur as long as two populations have the same geographical range.

Biology & Microbiology

Which is a characteristic of a good hypothesis?

a. It is falsifiable b. It is a statement of fact. c. It can only be tested once. d. It can be proven to be true. e. It represents important conclusions

Biology & Microbiology