Scopin it Out
When biologists wish to study the internal ultrastructure of cells, they can achieve the finest resolution by using a
a. phase-contrast light microscope.
b. scanning electron microscope.
c. transmission electronic microscope.
d. confocal fluorescence microscope.
e. super-resolution fluorescence microscope.
c. transmission electronic microscope.
Only organelles found in Prokaryotes.
What are DNA, Cell Wall, Plasma Membrane, and Ribosomes?
This structure is the site of the synthesis of proteins that may be exported from the cell
What is Rough ER?
The type of organelle is found in plant cells but not in animal cells.
What are thylakoids?
Thylakoids, DNA, and ribosomes are all components found in
What are the chloroplast?
The advantage of light microscopy over electron microscopy is that
light microscopy provides for higher magnification than electron microscopy.
light microscopy provides for higher resolving power than electron microscopy.
light microscopy allows one to view dynamic processes in living cells.
light microscopy provides higher contrast than electron microscopy.
light microscopy allows one to view dynamic processes in living cells.
DNA is present in both archaea and bacteria.
What is true of archaea and bacteria?
The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation
What is because plant cells contain a large vacuole that reduces the volume of the cytoplasm.
This type of organelle or structure is primarily involved in the synthesis of oils, phospholipids, and steroids
What is smooth endoplasmic reticulum?
Cyanide binds to at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the
What is the mitochondria?
The technique would be most appropriate to use to observe the movements of condensed chromosomes during cell division?
What is standard light microscopy
Prokaryotes are classified as belonging to two different domains. What are the domains
What is Bacteria and Archaea?
cells that have the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondria are.
What is nearly any eukaryotic organism?
This produces and modifies polysaccharides that will be secreted
What is Golgi Body?
A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light, whereas organelles in the lighter fraction could produce ATP in the dark. The heavier and lighter fractions are most likely to contain, respectively
What are chloroplasts and mitochondria?
The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is
What is the mitochondria
Large numbers of ribosomes are present in cells that specialize in producing this.
What are proteins?
The liver is involved in detoxification of many poisons and drugs. This is the structure that is primarily involved in this process and therefore abundant in liver cells
What is smooth ER?
serves an important role in determining or maintaining the structure of plant cells. Which of the following are distinct from the others in their composition
What is the plant Cell Wall?
Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
What are gap junctions?
The major cause of the size limits for certain types of cells?
What is the need for sufficient surface area to support the cell's metabolic needs
A cell with a predominance of free ribosomes is most likely
What is producing primarily cytoplasmic proteins.
Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular components. In animal cells, this organelle contains these hydrolytic enzyme
What is lysosome?
In a liver cell detoxifying alcohol and some other poisons, the enzymes of the peroxisome remove hydrogen from these molecules and
What is transferring the hydrogen to oxygen molecules to generate hydrogen peroxide?
A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in its
What is the Golgi apparatus and extracellular matrix?