TLS Online TPP Program

#Question id: 2207


Why was it unexpected that transporter proteins are required for transmembrane fatty acid transport?

#Unit 2. Cellular Organization
  1. because these molecules are too small for their diffusion to be impeded by membranes

  2. because it is the cytosolic fatty acid binding-protein–fatty acid complex that is the actual transported complex

  3. because these molecules are sufficiently hydrophobic to diffuse across membranes

  4. because triglycerides carried by lipoproteins were thought to be the only source of fatty acids in the circulation

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TLS Online TPP Program

#Question id: 3833

#Unit 3. Fundamental Processes

Regarding DNA replication, which, if any, of the following statements is incorrect?

TLS Online TPP Program

#Question id: 3834

#Unit 3. Fundamental Processes

In his transformation experiments, what phenomenon did Griffith observe?

TLS Online TPP Program

#Question id: 3835

#Unit 3. Fundamental Processes

State whether the following statements is true/false regarding DNA replication.

1. A short primer is added to the DNA polymerase reaction mix for Sanger DNA sequencing that has a 5ʹ free hydroxyl to which new nucleotides can be added.

2. In a sequencing gel, all fragment in one of the four lanes terminates in the same type of nucleotide base.

3. Eukaryotic cells contain at least five DNA polymerases all of which are responsible for nuclear DNA replication.

4. Since the rate of form movement in eukaryotes is much slower than that of bacteria, chromosomes require more than an hour to replicate.

5. Although histones and DNA are made in the same parts of the eukaryotic cell, the packaging of them in the nucleosome slows down replication so that it is slower than that of prokaryotes.

TLS Online TPP Program

#Question id: 3836

#Unit 3. Fundamental Processes

Which of the following statements accurately describes the differences between DNA replication in prokaryotes and DNA replication in eukaryotes?

TLS Online TPP Program

#Question id: 3837

#Unit 3. Fundamental Processes

How does the enzyme telomerase meet the challenge of replicating the ends of linear chromosomes?

TLS Online TPP Program

#Question id: 3838

#Unit 3. Fundamental Processes

Which of the following statements correctly describes the difference between the leading and the lagging strands of DNA during DNA replication?