Exam 7: Inside the Cell

Researchers tried to explain how vesicular transport occurs in cells by attempting to assemble the transport components. They set up microtubular tracks along which vesicles could be transported, and they added vesicles and ATP because they knew the transport process requires energy). Yet, when they put everything together, there was no movement or transport of vesicles. What were they missing?

Which of the following is not a characteristic that chloroplasts and mitochondria share?

A cell is found to contain a series of damaged organelles. Which process will play a role in removal of these damaged organelles from the cytosol?

Which of the following components would you expect to find in any type of living organism?

What can you infer about high- molecular- weight proteins that cannot be transported into the nucleus?

The liver is involved in the detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells?

To what does the 9 + 2 arrangement of microtubules, typical of cilia and eukaryotic flagella, refer?

What is the primary objective of cell fractionation including differential centrifugation)?

Spherocytosis is a defect associated with a defective cytoskeletal protein in red blood cells. What do you suspect is one consequence of defective cytoskeletal proteins in red blood cells?

What is a purpose of the cell wall for both prokaryotes and plant cells?

Which of the following is present in a prokaryotic cell?

How is the structure of kinesin related to its function?

Actin filaments have polarity. This means that the two ends can be identified due to structural differences. The plus end is the end to which subunits are added more rapidly or the end of polymerization. Which of the following would enable you to identify the plus end of actin filaments?

You are studying an organism and note that its proteins fail to be glycosylated. A deficiency in which of the following organelles is likely the cause?

What is the most likely role of a cell that contains an extensive smooth ER?

You have a distant cousin, age 4, who is always tired and fatigued and is not able to play games and sports like other healthy children. He is most likely to have an enzyme deficiency or defect associated with which intracellular organelle?

Motor proteins require energy in the form of ATP. ATP hydrolysis results in a conformational change that allows the protein to move along microtubular tracks pathways). What structural component of the motor protein contains the ATP binding site and, therefore, changes shape to enable movement?

What is the site of synthesis of proteins for export secretion from the cell)?

As part of our immune system, neutrophil cells engulf micro- organisms or foreign particles. The process by which the neutrophil does this is known as

What is the function of the nuclear pore complex?