TLS Online TPP Program

#Question id: 3813


The mechanism of DNA replication is studied in an E. coli replication fork. Which is a property of Okazaki pieces in an E. coli replication fork?

#Unit 3. Fundamental Processes
  1. Okazaki pieces are joined together by DNA polymerase I to form a long chain.

  2. Okazaki pieces are polymerized in the 3′→ 5′ direction by DNA polymerase III.

  3. An Okazaki piece for the leading strand is polymerized to a length of 1000-2000 nucleotides.

  4. An Okazaki piece for the lagging strand has a base sequence complementary to its template.

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TLS Online TPP Program

#Question id: 4360

#Unit 3. Fundamental Processes

Which of the following functions are characteristic of general transcription factors in eukaryotes?

TLS Online TPP Program

#Question id: 4361

#Unit 3. Fundamental Processes

How do steroid hormones produce their effects in cells?

TLS Online TPP Program

#Question id: 4362

#Unit 3. Fundamental Processes

How are bacteria able to change their patterns of protein synthesis so quickly in response to environmental changes?

TLS Online TPP Program

#Question id: 4363

#Unit 3. Fundamental Processes

researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture. In one set of experiments, she succeeded in increasing acetylation of histone tails in the chromatin of the cells. Which of the following results would she most likely see in these cells?

TLS Online TPP Program

#Question id: 4364

#Unit 3. Fundamental Processes

A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture. One of her colleagues suggested she try increased methylation of cytosine (C) nucleotides in the DNA of promoters of a mammalian system. Which of the following results would she most likely see?

TLS Online TPP Program

#Question id: 4365

#Unit 3. Fundamental Processes

Which of the following methods is utilized by eukaryotes to control their gene expression that is different from the type of control found in bacteria?