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nwc predictor test
st430 A&P Cells
| Question | Answer |
|---|---|
| A beaker is divided into two compartments by a semipermeable membrane. Compartment A contains 20% NaCI solution while compartment B contains a 50% NaCI solution. The membrane is permeable to both water and Na+ and CI- initially, | Na+ and CI- diffuse from compartment B to compartment A |
| oxygen moves from the lungs (high concentration) into the blood (low concentration) in response to: | diffusion |
| which of the following are found on the rough endoplasmic reticulum? | ribosomes |
| A beaker contains two compartments. Compartment A (CA) contains a 10% salt solution and compartment B (CB) contains a 20% salt solution. The membrane is permeable only to water. At equilibrium, the volume in CA is: | less than the volume in CB |
| Compartment A contains a 25% glucose solution. Compartment B contains a 15% glucose solution. The membrane is permeable to water but impermeable to glucose. Which of the following statments is true regarding the initial net flux? | water diffuses from compartment B to compartment A |
| which of the following is a gel-like substance located inside the cell but outside of the nucleus? | cytoplasm |
| which of the following structures makes the rough endoplasmic reticulum look like sandpaper? | ribosomes |
| an anticancer drug that interferes with only mitosis: | is described as cell cycle M phase-specific |
| what are the hairlike structures located on the outer surface of the cell membrane? | cilia |
| which of the following best describes a cell that is necrotic? | dead |
| a child has experienced a blow to the head causing a slow bleed. although the bleeding has stopped, the blood clot continues to expand because: | the particles of the blood clot are osmotically active and draw water into the clot. |
| Most K+ is located in the cells, with little K+ in the tissue spaces. What accounts for the movement of additional K+ into the cells? | K+ is actively pumped into the cell |
| which of the following describes the response of a red blood cell to immersion in an isotonic solution? | there is no net movement of water between the RBC and solution |
| which word means "bursting of red blood cells"? | hemolysis |
| in which structure is most DNA found? | nucleus |
| which of the following best describes the power or driving force for active transport? | ATP |
| which of the following is most associated with the ribosome? | protein synthesis |
| which of the following is a correct statement? | Most ATP is produced in the mitochondria |
| prophase, metaphase, anaphase, and telophase are phases of: | mitosis |
| if a cell is placed in a hypotonic solution such as water, the cell will | swell and burst |
| which of the following is least true of mitochondria? | found only within liver cells |
| the selectively permeable membrane: | determines which substances enter and leave the cell |
| if plasma protein leaks into the tissue spaces, | edema develops |
| lysosomes are filled with: | powerful enzymes that digest cellular waste and debris |
| what is the effect of an intravenous infusion of pure water? | The RBC'S burst |
| which structure puts the finishing touches on and packages the protein for export from the cell? | golgi apparatus |
| which of the following is true of a benign neoplasm? | noncancerous tumor |
| A beaker contains two compartments. compartment A (CA) contains a 10% salt solution and compartment B (CB) contains a 20% salt solution. the membrane is permeable to the salt and water. At equilibrium, | The volume is the same in both compartments |
| which of the following is considered the control center of the cell? | nucleus |
| telophase and cytokinesis: | complete the splitting of a single cell into two identical cells. |
| what is the transport mechanism in this description: A passive process that uses a carrier molecule to move a solute from an area of high concentration to an area of low concentration? | facilitated diffusion |
| mitosis: | produces two genetically identical cells |
| what is the primary difference between diffusion and facilitated diffusion? | facilitated diffusion uses a "helper" molecule to move a substance passively. |
| which process describes the pushing of water across the capillary ( blood vessels) membrane? | filtration |
| which of the following is not true of glycogen? Gycogen: | is an alcohol to which three fatty acids attach thereby forming a triglyceride |
| A beaker is divided into two compartments by a semipermeable membrane. compartment A contains a 20% NaCI solution and compartment B contains a 50% NaCI solution. the membrane is permeable to water but not to Na+ or CI- At equilibrium, the: | volume in compartment B will be greater than the volume in compartment A. |
| this cytoplasmic organelle contains the enzymes of the Krebs cycle and electron transport chain and is primarily concerned with the formation of ATP. | mitochondrium |
| compartment A contains a 5% glucose solution. Compartment B contains a 15% glucose solution. the membrane is permeable to both solute and solvent. which of the following statement is true regarding the initial net flux? | water diffuses from compartment A to compartment B |
| methotrexate, an anticancer drug that interferes with cell replication, is most effective when the cancer cell is in the S phase of the cell cycle. which of the following best describes methotrexate? | cell cycle phase-specific |
| at equilibrium the volume in compartment B is greater than the volume in compartment A. in which initial situation would this be achieved? | there is a 5% glucose solution in compartment A and a 15% glucose solution in compartment B. the membrane is impermeable to the solute and permeable to the solvent |
| what is the transport mechanism in this description: A passive process that "pulls" water from an area where there is more water to an area where there is less water? | osmosis |
| which structure is described as rough or smooth? | endoplasmic reticulum |
| the skunk makes his presence know by: | diffusion |
| G1, G2, the S phase, and the M phase are phases of: | the cell cycle |
| prophase, metaphase, anaphase, and telophase are: | the stages of mitosis. |
| what is the name of the process in which intracellular protein containing vesicle fuses with the cell membrane and expels the protein to the outside of the cell? | exocytosis |
| the mitochondrion is called the power plant of the cell because____within the mitochondrion. | most of the ATP is produced. |
| plasma proteins determine: | plasma oncotic (osmotic) pressure |
| A cervical Pap smear indicates well-differentiated cells. you would interpret this as: | a normal cellular appearance |
| which type of solution causes crenation or shrinkage of submerged red blood cells? | hypertonic |
| the capillary filtration pressure is 30 and 7mm Hg at the venous end. the capillary ontonic pressure is 15mm hg. which of the following is true? | most water is filtered out of the capillary into the interstitium at the arterial end of the capillary. |
| the first gap phase (g1), second gap phase ( g2) and synthesis phase (S): | occurs during interphase |
| this substance is composed of glycerol and three fatty acids | triglyceride |
| which group is correct? | nitrogen-containing waste: urea and creatinine |
| which structure is described as a semipermeable phospholipid bilayer? | cell membrane |
| the rough ER is the site of: | protein synthesis |
| a stem cell develops into a muscle cell. which of the following most accurately describes this process? | differentiation |
| which of the following most accurately describes diffusion? | passive transport |
| what is the extensive internal membrane system that forms channels and is concerned with the synthesis of protein and steroids? | endoplasmic reticulum |
| most body potassium (k+) is located intracellularly. through what transport mechanism would additional k+ move from the extracellular compartment to the intracellular compartment? | active transport pump |
| with regard to the cell cycle, | cell division occurs during M phase |
| a cell that "drops out" of the cell cycle: | enters g0 |
| which of the following is common to the ribosomes, rough ER, and golgi apparatus? | protein synthesis |
| which of the following best describes the eating of a bacterium by a lysosome? | phagocytosis |
| which of the following best describes normal saline? | isotonic |
| what is the transport mechanism in this description: a passive process that uses a pressure difference as its driving force? | filtration |
| which process describes phagocytosis and pinocytosis? | endocytosis |
| which of the following is not a lipid or lipoid substance? | ammonia |
| what programmed sequence of events helps rid the body of old, unnecessary, and unhealthy cells? | apoptosis |
| pinocytosis: | refers to cellular drinking |
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editsuchan
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