Chapter 6 Flashcards
What is the smallest structure that would most likely be visible with a standard research grade light microscope?
Mitochondrion
What is an advantage of light microscopy over electron microscopy?
Light microscopy allows a visualization of dynamic processes in living cells
In the fractionation of homogenized cells using differential centrifuation, which of the following will require the greatest be different pallets at the bottom of the tube
Ribosomes
How can a modern transmission electron microscope achieve a resolution of about 0.2 nm
Electron beams have much shorter wavelengths than visible light
What is the most appropriate method to observe the movement of contains chromosomes during cell division?
Standard light microscopy
What method is the most appropriate method to observe and measure the size of ribosomes in a eukaryotic cell
Transmission electron microscopy
Which of the following would be most appropriate observed a 3-D structure and organization of microvilli on an intestinal cell
Scanning electron microscope
Oh, what box will have the greatest ratio of surface area to volume
1x1x1
What domains of life are classified as prokaryotes?
Bacteria and Arcadia
What is found in plant animal and bacterial cells?
Ribosomes
What macromolecule enters the nucleus of a eukaryotic cell through pores in the nuclear membrane?
Ribosomal proteins
What statement correctly describes some aspects of protein secretion from prokaryotic cells
Protein, secreted by prokaryotes are likely synthesize on ribosomes bound to the cytoplasmic surface of the plasma membrane
What would happen if the nuclear lamina disassembled
A nucleus with chain shape
A cell with the predominance of rough ER is most likely
Producing large quantities of proteins for secretion
Assault with a predominance of smooth ER is likely specialized to
Synthesize large quantities of lipids
What structure is independent of the Endo membrane system?
Chloroplast
What cellular organelle is most likely defective with Tay-Sachs disease?
The lysosome
Cells take up asbestos by phagocytosis, but are not able to degrade it where does the asbestos fibers accumulate?
Lysosomes
Thylakoids DNA and ribosomes are all components found in where
Chloroplasts
If plants are grown on media, containing radioactively labeled timing, for one generation radioactively labeled macromolecules will be detectedin which of the following
Nucleus, mitochondria, and chloroplast
How does a liver cell detoxify alcohol?
The enzymes of the paroxysm remove hydrogen from these molecules and combine the hydrogen with oxygen molecules to produce hydrogen peroxide
Where are proteins produced other than on ribosomes free in the cytosol or ribosomes attached to the ER?
In mitochondria
Cyanide binds with at least one molecule involved in producing ATP if a cell is expose cyanide, most about cyanide is likely to be a localized within the
Mitochondria
Suppose a young boy is always tired, and fatigued suffering from a metabolic disease, which of the following organelles is most likely malfunctioning in this disease
Mitochondria
Vinblastine, a drug that inhibits microtubules polymerization is used to treat some form of cancer. Cancer cells given this drug would be unable to do what
Separate chromosomes during cell division
How do amoeba move?
Growth of actin filaments to find boys in the plasma membrane
Researchers investigating the mechanisms of vesicular transport assembled a cell free system that included microtubule tracks, vesicles, and ATP. They observed no movement of transport of vesicles in this system. What are they missing
Motor proteins
How to Celia and flagella bend
A motor proteins called dynein
Cytochalasin D is a drug that prevents Actin polymerization. Also treated with this drug will still be able to carry out what process
Move vesicles within a cell
What is required to form cilia or flagella?
Tubulin
A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins, but most likely cause defects, in which of the following organelles or structures
The Golgi apparatus an extra cellular matrix
What is a primary function of integrins
Transmitting signals from the extracellular matrix to the cytoskeleton
What structure forms, cytoplasmic channels that connect adjacent plant cells to the cell wall
Plasmodesmata
How can ions trouble from the cytoplasm of one animal cell to an adjacent cell?
Gap junctions
What does the middle lamella do in plant cells?
Glues adjacent cells together
Which cell would be the best for studying lysosomes
Fag of cystic white blood cells 
