Practice Questions

TLS Online TPP Program

#Question id: 3041

Which statement about gram-negative bacteria is correct?

#Unit 2. Cellular Organization

Penicillins are the best antibiotics to use against them.
They often possess an outer membrane containing toxic lipopolysaccharides.
Their chromosomes are composed of DNA tightly wrapped around large amounts of histone proteins.
Their cell walls are primarily composed of peptidoglycan.

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TLS Online TPP Program

#Question id: 23581

#Unit 13. Methods in Biology

Which of the following is false?

TLS Online TPP Program

#Question id: 23582

#Unit 13. Methods in Biology

Properties of cloning vectors include each of the following, except

TLS Online TPP Program

#Question id: 23583

#Unit 13. Methods in Biology

Insert DNA may be produced by

TLS Online TPP Program

#Question id: 23584

#Unit 13. Methods in Biology

Which of the following statements is true concerning sticky ends?

TLS Online TPP Program

#Question id: 23585

#Unit 13. Methods in Biology

________ are small, circular DNA molecules used as vectors for DNA fragments up to 1-5 kb in size.

TLS Online TPP Program

#Question id: 23586

#Unit 13. Methods in Biology

Which of the following is true, concerning the plasmid vector, pBR322?