Filters
Question type

Study Flashcards

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

Correct Answer

verifed

verified

cell injury, cell ox...

View Answer

The most common intracellular cation is _________.

Correct Answer

verifed

verified

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.


A) connexons
B) desmosomes
C) gap junctions
D) tight junctions

E) All of the above
F) B) and C)

Correct Answer

verifed

verified

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

A) True
B) False

Correct Answer

verifed

verified

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


A) the presence or absence of ubiquitins
B) specific tRNAs
C) changes in the environment
D) specific codes from the DNA

E) B) and D)
F) A) and B)

Correct Answer

verifed

verified

DNA transcription is another word for DNA replication.

A) True
B) False

Correct Answer

verifed

verified

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.

Correct Answer

verifed

verified

Within the Golgi apparatus, further modi...

View Answer

Which of the following statements is correct regarding RNA?


A) If the base sequence of DNA is ATTGCA, the messenger RNA template will be UCCAGU.
B) There is exactly one specific type of mRNA for each amino acid.
C) rRNA is always attached to the rough ER.
D) Messenger RNA, transfer RNA, and ribosomal RNA play a role in protein synthesis.

E) B) and C)
F) A) and B)

Correct Answer

verifed

verified

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?


A) Lowering the energy of activation.
B) Stopping the activity of the sodium potassium pump.
C) Increasing the number of digestive enzymes in the digestive tract.
D) Increasing the concentration of glucose outside of the cell.

E) All of the above
F) C) and D)

Correct Answer

verifed

verified

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

A) True
B) False

Correct Answer

verifed

verified

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


A) receptor-mediated endocytosis
B) pinocytosis
C) secondary active transport
D) phagocytosis

E) B) and C)
F) C) and D)

Correct Answer

verifed

verified

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


A) It will arrest mitosis by preventing the formation of spindle microtubules.
B) It would have little or no effect on mitosis.
C) It will enhance mitosis by moving chromosome toward the spindle equator.
D) It would delay mitosis by preventing S phase.

E) A) and C)
F) A) and D)

Correct Answer

verifed

verified

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 _________.


A) the rate of oxygen diffusion is independent of concentration
B) the concentration gradient for oxygen is steepness inside of the cell
C) oxygen will passively diffuse into the cells
D) oxygen requires active transport to enter most cells

E) All of the above
F) B) and D)

Correct Answer

verifed

verified

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

A) True
B) False

Correct Answer

verifed

verified

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

Correct Answer

verifed

verified

No. Because they are passive p...

View Answer

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

Correct Answer

verifed

verified

Fluid volume deficit occurs when the bod...

View Answer

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


A) the rough ER
B) the smooth ER
C) both smooth and rough ER
D) the cytoplasm

E) B) and C)
F) A) and B)

Correct Answer

verifed

verified

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


A) pinocytosis
B) osmosis
C) phagocytosis
D) exocytosis

E) A) and B)
F) None of the above

Correct Answer

verifed

verified

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

Correct Answer

verifed

verified

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) a channel
B) a symporter
C) a carrier protein
D) a pump

E) B) and C)
F) A) and D)

Correct Answer

verifed

verified

Showing 41 - 60 of 103

Related Exams

Show Answer