TLS Online TPP Program

#Question id: 3874


A branched (“lariat”) structure is formed during:

#Unit 3. Fundamental Processes
  1. attachment of a 5' cap to mRNA.

  2. attachment of poly(A) tails to mRNA.

  3. processing of preribosomal RNA.

  4. splicing of group II introns.

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TLS Online TPP Program

#Question id: 2548

#Unit 2. Cellular Organization

The cell walls of bacteria, fungi, and plant cells, and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following characteristics are common to all of these extracellular structures?

TLS Online TPP Program

#Question id: 2549

#Unit 2. Cellular Organization

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in which of the following organelles or structures?

TLS Online TPP Program

#Question id: 2550

#Unit 2. Cellular Organization

In plant cells, the middle lamella ________.

TLS Online TPP Program

#Question id: 2551

#Unit 2. Cellular Organization

Gaucher disease is the most common of lipid storage diseases in humans. It is caused by a deficiency of an enzyme necessary for the breakdown of lipids. This leads to the accumulation of fatty material in organs of the body including the spleen, liver, kidneys, lungs, brain, and bone marrow. Using your knowledge of the structure of eukaryotic cells, identify the statement below that best explains how internal membranes and the organelles of cells may be involved in Gaucher disease.

TLS Online TPP Program

#Question id: 2552

#Unit 2. Cellular Organization

Which of the following statements about the electron transport chain is true?

TLS Online TPP Program

#Question id: 2553

#Unit 2. Cellular Organization

Where are the proteins of the electron transport chain located?