Transcript Answer

The cells that line the intestine have highly
folded plasma membranes on the absorptive
surface of the intestine because
1. this will increase
3. cells are in a hypotonic
volume, making the
medium and they have
cells more efficient.
shriveled up.
2. this will increase
surface area to
volume ratio.
4. large amounts of plasma
membrane will be
needed for endocytosis.
04.01Q
The cells that line the intestine have highly
folded plasma membranes on the absorptive
surface of the intestine because
1. this will increase
3. cells are in a hypotonic
volume, making the
medium and they have
cells more efficient.
shriveled up.
2. this will increase
surface area to
volume ratio.
4. large amounts of plasma
membrane will be
needed for endocytosis.
04.01A
The cells that line the intestine have highly
folded plasma membranes on the absorptive
surface of the intestine because
Answer:
this will increase surface area to volume
ratio.
Explanation:
These cells absorb materials directly
through their membranes by diffusion (not
endocytosis, which would require
additional energy). The folding increases
the rate of absorption by providing more
surface area for diffusion.
04.01E
Which of the following would NOT be likely
to travel through a nuclear pore?
1.
2.
3.
4.
5.
Ribosome subunit
DNA
Protein
Ions
Sugars
04.02Q
Which of the following would NOT be likely
to travel through a nuclear pore?
1.
2.
3.
4.
5.
Ribosome subunit
DNA
Protein
Ions
Sugars
04.02A
Which of the following would NOT be likely
to travel through a nuclear pore?
Answer:
DNA
Explanation:
DNA is excluded from traveling through the
nuclear pore by “gatekeeper” molecules
that line the pore, restricting the passage of
molecules between the nucleus and
cytoplasm.
04.02E
Which of the following cell types is unlike the others?
1. a single-celled protozoan
such as the Paramecium
shown on the left
2. cell of the green plant Elodea
3. Streptococcus bacterial cell
4. a cell from a mushroom (a
type of fungus)
5. a human heart muscle cell
04.03Q
Which of the following cell types is unlike the others?
1. a single-celled protozoan
such as the Paramecium
shown on the left
2. cell of the green plant Elodea
3. Streptococcus bacterial cell
4. a cell from a mushroom (a
type of fungus)
5. a human heart muscle cell
04.03A
Which of the following cell types is unlike the others?
Answer:
Streptococcus bacterial cell
Explanation:
All of the other choices are examples of
eukaryotic cells; they have nuclei and other
membrane-bound organelles. Bacterial cells,
however, are prokaryotic and lack these
organelles.
04.03E
Which of the following is correct about the
genetic material of a prokaryotic cell?
1. The genetic material is DNA, stored in a nucleus.
2. The genetic material is RNA, stored in a nucleus.
3. The genetic material is DNA, stored in the nucleoid
region.
4. The genetic material is RNA, stored in the nucleoid
region.
04.04Q
Which of the following is correct about the
genetic material of a prokaryotic cell?
1. The genetic material is DNA, stored in a nucleus.
2. The genetic material is RNA, stored in a nucleus.
3. The genetic material is DNA, stored in the nucleoid
region.
4. The genetic material is RNA, stored in the nucleoid
region.
04.04A
Which of the following is correct about the
genetic material of a prokaryotic cell?
Answer:
The genetic material is DNA, stored in the
nucleoid region.
Explanation:
Both types of cells have both DNA and RNA,
but the genetic information is stored in DNA.
Eukaryotes enclose most of their DNA within a
membrane-bound nucleus, while prokaryotic
DNA is found in the cellular region called the
nucleoid.
04.04E
Which of the following would NOT be a
logical conclusion about a cell that has
large amounts of rough ER?
1. Large quantities of enzymes for biochemical processes are
manufactured by that cell.
2. Membrane proteins and phospholipids are made to replace
other membranous components in the cell.
3. Digestive enzymes for export are manufactured by that cell.
4. Membrane lipids are produced by that cell.
5. Large amounts of protein hormone are exported by the cell.
04.05Q
Which of the following would NOT be a
logical conclusion about a cell that has
large amounts of rough ER?
1. Large quantities of enzymes for biochemical processes are
manufactured by that cell.
2. Membrane proteins and phospholipids are made to replace
other membranous components in the cell.
3. Digestive enzymes for export are manufactured by that cell.
4. Membrane lipids are produced by that cell.
5. Large amounts of protein hormone are exported by the cell.
04.05A
Which of the following would NOT be a
logical conclusion about a cell that has
large amounts of rough ER?
Answer:
Membrane lipids are produced by that cell.
Explanation:
The major function of the rough ER is the
manufacture and transport of different types of
proteins, such as membrane proteins, enzymes,
or hormones. Membrane lipids are produced by
the smooth ER.
04.05E
How does a cell rid itself of defective or
malfunctioning organelles?
1. They are engulfed by plastids and stored until
export from the cell is possible.
2. Defective parts accumulate until the cell dies.
3. Lysosomes assist in the removal of defective
organelles by digesting them.
4. Ribosomes play a significant role in the removal of
malfunctioning parts by absorbing the parts.
5. They are exported by exocytosis.
04.06Q
How does a cell rid itself of defective or
malfunctioning organelles?
1. They are engulfed by plastids and stored until
export from the cell is possible.
2. Defective parts accumulate until the cell dies.
3. Lysosomes assist in the removal of defective
organelles by digesting them.
4. Ribosomes play a significant role in the removal of
malfunctioning parts by absorbing the parts.
5. They are exported by exocytosis.
04.06A
How does a cell rid itself of defective or
malfunctioning organelles?
Answer:
Lysosomes assist in the removal of defective
organelles by digesting them.
Explanation:
The primary function of the lysosome is
digestion of intracellular particles. This
includes the digestive destruction of
organelles that no longer function so that their
components can be reused by the cell.
04.06E
Which of the following relationships between
cell structures and their respective functions
is NOT correct?
1. cell wall — support and protection
2. chloroplasts — chief site of cellular breakdown of
sugars
3. nucleus — site of genetic control of information
4. ribosomes — site of protein synthesis
5. mitochondria — formation of ATP for the cell
04.07Q
Which of the following relationships between
cell structures and their respective functions
is NOT correct?
1. cell wall — support and protection
2. chloroplasts — chief site of cellular breakdown of
sugars
3. nucleus — site of genetic control of information
4. ribosomes — site of protein synthesis
5. mitochondria — formation of ATP for the cell
04.07A
Which of the following relationships between
cell structures and their respective functions
is NOT correct?
Answer:
chloroplasts — chief site of cellular
breakdown of sugars
Explanation:
Mitochondria are the organelles responsible
for cellular respiration. Chloroplasts are
responsible for photosynthesis.
04.07E
Drugs that inhibit microtubules will
1. stop organelle movement.
2. inhibit cell division.
3. prevent the formation of new cilia and flagella.
4. kill the cell.
5. All of the above.
04.08Q
Drugs that inhibit microtubules will
1. stop organelle movement.
2. inhibit cell division.
3. prevent the formation of new cilia and flagella.
4. kill the cell.
5. All of the above.
04.08A
Drugs that inhibit microtubules will
Answer:
All of the above.
Explanation:
Microtubules have many functions in the cell:
they make up the structure of cilia and
flagella, help to move some organelles within
the cell, and form the spindle fibers that are
crucial for chromosome separation during cell
division. With these functions inhibited, the
cell is likely to die.
04.08E
A cell has the following molecules and structures:
enzymes, DNA, ribosomes, plasma membrane,
and mitochondria. It could be a cell from
1. a bacterium.
2. an animal, but not a plant.
3. a plant, but not an animal.
4. a plant or an animal.
5. any kind of organism.
04.09Q
A cell has the following molecules and structures:
enzymes, DNA, ribosomes, plasma membrane,
and mitochondria. It could be a cell from
1. a bacterium.
2. an animal, but not a plant.
3. a plant, but not an animal.
4. a plant or an animal.
5. any kind of organism.
04.09A
A cell has the following molecules and structures:
enzymes, DNA, ribosomes, plasma membrane,
and mitochondria. It could be a cell from
Answer:
a plant or an animal.
Explanation:
The presence of mitochondria indicates that
this cannot be a bacterial cell, but all of these
structures can be found in eukaryotic cells –
both plant and animal cells.
04.09E