Exam 3: Cells: the Living Units

Phagocytosis is used by the cells to secrete intracellular substances to the outside of the cell.

Are random moments of particles, diffusion, and osmosis seen only in living tissue?

Riboswitches are folded RNAs that act as switches to turn protein synthesis on or off in response to _________.

Water may move through membrane pores constructed by transmembrane proteins called _________.

Colchicine is a drug that can prevent the formation of microtubules. Which is the most likely effect colchicine would have on cell division?

The most common intracellular cation is _________.

In a tissue type that undergoes a relatively great deal of mechanical stress, like the tissue that lines the intestine, you would expect to see an abundance of _________between the individual cells of the tissue.

Telomeres are the regions of chromosomes that code for the protein ubiquitin.

Introns represent a genome scrap yard that provides DNA segments for genome evolution and a variety of small RNA molecules.

Which of the following would NOT be restricted (limited) by low levels of ATP?

Which transport process is the main mechanism for the movement of most macromolecules by body cells?

The lungs deliver a regular supply of oxygen to the blood, which is in turn circulated to most all the cells of the body. At the same time oxygen is consumed during aerobic cellular respiration within these cells. This implies that _________.

DNA transcription is another word for DNA replication.

A type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. The ions move through the transport protein, and into the cell. These transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. This transport protein would best be described as __________.

A patient was admitted to the hospital for severe dehydration. Explain what changes occur in extracellular and intracellular fluid compartments during dehydration.

Which of the following statements is correct regarding RNA?

What factors contribute to the fragility of the lysosome and subsequent cell autolysis?

In certain kinds of muscle cells, calcium ions are stored in_________ .

A type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. The ions move through the transport protein, and into the cell. These transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. Which of the following would stop transport of glucose through this transport protein?

Describe the events that take place within the Golgi apparatus to a protein that is destined for secretion by the cell into the extracellular fluid.