Question 1

A cell that has numerous ________ is a plant cell that plays an important role in photosynthesizing sugars for the entire plant.

Accepted Answer

chloroplasts

Question 2

________ transport of molecules across a selectively permeable membrane requires the input of energy from the cell,whereas ________ transport of molecules across a selectively permeable membrane does not require the use of cellular energy.

Accepted Answer

Active; passive

Question 3

If the concentration of sugar molecules in water on side "A" of a selectively permeable membrane is 5 percent,and the concentration of sugar molecules in water on side "B" of a selectively permeable membrane is 15 percent,the water will

Accepted Answer

A)  mostly move from side "B" to side "A" because the water concentration is higher on side"B." 
B)  mostly move from side "A" to side "B" because the water concentration is higher on side"A." 
C)  mostly move from side "A" to side "B" because the water concentration is higher on side"B." 
D)  not move at all because the water concentrations are isotonic. 
A)  mostly move from side "B" to side "A" because the water concentration is higher on side"B." 
B)  mostly move from side "A" to side "B" because the water concentration is higher on side"A." 
C)  mostly move from side "A" to side "B" because the water concentration is higher on side"B." 
D)  not move at all because the water concentrations are isotonic. B

Question 4

Match the following cellular structures with their primary function (you may need to use a function more than once).
-cell wall

Accepted Answer

A) photosynthesis 
B) regulate what moves in and out of cell 
C) structure and support for cell 
D) lipid synthesis 
E) tags proteins for movement
F)enzymatic breakdown of large molecules
G)protein synthesis
H)cellular respiration
I)water and solute storage
J)location of DNA
K)internal organization and structural support 
A) photosynthesis 
B) regulate what moves in and out of cell 
C) structure and support for cell 
D) lipid synthesis 
E) tags proteins for movement
F)enzymatic breakdown of large molecules
G)protein synthesis
H)cellular respiration
I)water and solute storage
J)location of DNA
K)internal organization and structural support

Question 5

Label the plasma membrane below.Use the following terms: cellular environment, external environment, plasma membrane, hydrophilic heads, hydrophobic tails ,energy, water, sugar, and transport protiens.

Accepted Answer

(1)external environment
(2)cel

Question 6

Match the following cellular structures with their primary function (you may need to use a function more than once).
-Golgi apparatus

Accepted Answer

A) photosynthesis 
B) regulate what moves in and out of cell 
C) structure and support for cell 
D) lipid synthesis 
E) tags proteins for movement
F)enzymatic breakdown of large molecules
G)protein synthesis
H)cellular respiration
I)water and solute storage
J)location of DNA
K)internal organization and structural support 
A) photosynthesis 
B) regulate what moves in and out of cell 
C) structure and support for cell 
D) lipid synthesis 
E) tags proteins for movement
F)enzymatic breakdown of large molecules
G)protein synthesis
H)cellular respiration
I)water and solute storage
J)location of DNA
K)internal organization and structural support

Question 7

Which of the following types of organisms are single-celled (unicellular)?

Accepted Answer

A)  bacteria, yeast, and many protozoans 
B)  many fungi, some protozoans, and plants 
C)  plants and animals 
D)  many fungi, plants, and animals 
A)  bacteria, yeast, and many protozoans 
B)  many fungi, some protozoans, and plants 
C)  plants and animals 
D)  many fungi, plants, and animals

Question 8

What additional structures would the cell below need to become a plant cell?

Accepted Answer

This cell would need a nuclear membrane

Question 9

Which of the following statements is true of chloroplasts?

Accepted Answer

A)  They produce proteins used by other parts of the cell. 
B)  They capture energy from sunlight. 
C)  They give an animal cell its shape. 
D)  They contain an entire copy of a cell's genetic material. 
A)  They produce proteins used by other parts of the cell. 
B)  They capture energy from sunlight. 
C)  They give an animal cell its shape. 
D)  They contain an entire copy of a cell's genetic material.

Question 10

Liposomes form spontaneously from ________ and are important because ________.

Accepted Answer

A)  DNA; they provide a rigid structure to support the cell 
B)  phospholipid monolayers; these phospholipid monolayers provide a stable barrier between the internal and external environments 
C)  rigid cell walls; they provide support for the living cell and a barrier between the external and internal environments 
D)  phospholipid bilayers; they provide a barrier between an external environment and an internal environment 
A)  DNA; they provide a rigid structure to support the cell 
B)  phospholipid monolayers; these phospholipid monolayers provide a stable barrier between the internal and external environments 
C)  rigid cell walls; they provide support for the living cell and a barrier between the external and internal environments 
D)  phospholipid bilayers; they provide a barrier between an external environment and an internal environment

Question 11

Which of the following statements MOST accurately describes a selectively permeable membrane?

Accepted Answer

A)  Solutes are never able to cross the membrane. 
B)  Large molecules are always excluded from crossing the membrane. 
C)  Substances can only pass through the membrane with the help of either active or passive transport proteins. 
D)  Certain solutes move freely across the membrane by simple diffusion, while others must be helped across by active or passive transport proteins; some substances are completely excluded from crossing the membrane. 
A)  Solutes are never able to cross the membrane. 
B)  Large molecules are always excluded from crossing the membrane. 
C)  Substances can only pass through the membrane with the help of either active or passive transport proteins. 
D)  Certain solutes move freely across the membrane by simple diffusion, while others must be helped across by active or passive transport proteins; some substances are completely excluded from crossing the membrane.

Question 12

A cell surrounded by only a plasma membrane but containing a nucleus,mitochondria,Golgi apparatus,both smooth and rough ER,ribosomes,cytoskeleton,and lysosomes would be an example of a typical ________ cell.

Accepted Answer

The answer of A cell surrounded by only a plasma...

Question 13

A long piece of ribbon wired along both long edges is twisted into a helix and wrapped around individual pipe cleaners that have been rolled into spools; this grouping is then twisted (super coiled)again to condense it.This could be best used as a simple model for a

Accepted Answer

A)  plasma membrane, where the pipe cleaners represent the phospholipid bilayer and the ribbon represents proteins embedded in the membrane. 
B)  cell wall. 
C)  mitochondrion. 
D)  chromosome, where the pipe cleaners represent bundles of proteins around which the DNA double helix (wired ribbon) is wrapped. 
A)  plasma membrane, where the pipe cleaners represent the phospholipid bilayer and the ribbon represents proteins embedded in the membrane. 
B)  cell wall. 
C)  mitochondrion. 
D)  chromosome, where the pipe cleaners represent bundles of proteins around which the DNA double helix (wired ribbon) is wrapped.

Question 14

Dialysis tubing is a selectively permeable membrane that can be filled with a solution to simulate a cell.A piece of dialysis tubing has been filled with a cloudy white solution of 5 percent starch,5 percent egg albumin (protein),and 5 percent glucose (a small sugar)dissolved in water to simulate a cell.This simulated cell is weighed and then placed in a beaker of water.After soaking in the water for one hour,the simulated cell is once again weighed. Over time,the weight of the simulated cell can be expected to

Accepted Answer

A)  decrease because it is hypotonic to the beaker environment and water will enter the simulated cell through osmosis. 
B)  decrease because it is hypertonic to the beaker environment and water will leave the simulated cell through osmosis. 
C)  increase because the solution in the beaker is hypotonic to the simulated cell and water will enter the simulated cell through osmosis. 
D)  remain constant because it is isotonic to the beaker environment and water will be drawn into the simulated cell because of the albumin. 
A)  decrease because it is hypotonic to the beaker environment and water will enter the simulated cell through osmosis. 
B)  decrease because it is hypertonic to the beaker environment and water will leave the simulated cell through osmosis. 
C)  increase because the solution in the beaker is hypotonic to the simulated cell and water will enter the simulated cell through osmosis. 
D)  remain constant because it is isotonic to the beaker environment and water will be drawn into the simulated cell because of the albumin.

Question 15

Neurotransmitters are chemicals that transmit a nerve impulse across the gap between nerve endings.These chemicals are often large and unable to pass through the membrane,so the cell packages them in a vesicle that can fuse with the plasma membrane.The inside of the vesicle opens to the outside of the cell,releasing the neurotransmitters into the gap.This type of transport of cellular products is called

Accepted Answer

A)  pinocytosis. 
B)  receptor-mediated endocytosis. 
C)  exocytosis. 
D)  phagocytosis. 
A)  pinocytosis. 
B)  receptor-mediated endocytosis. 
C)  exocytosis. 
D)  phagocytosis.

Question 16

Match the following cellular structures with their primary function (you may need to use a function more than once).
-central vacuole

Accepted Answer

A) photosynthesis 
B) regulate what moves in and out of cell 
C) structure and support for cell 
D) lipid synthesis 
E) tags proteins for movement
F)enzymatic breakdown of large molecules
G)protein synthesis
H)cellular respiration
I)water and solute storage
J)location of DNA
K)internal organization and structural support 
A) photosynthesis 
B) regulate what moves in and out of cell 
C) structure and support for cell 
D) lipid synthesis 
E) tags proteins for movement
F)enzymatic breakdown of large molecules
G)protein synthesis
H)cellular respiration
I)water and solute storage
J)location of DNA
K)internal organization and structural support

Question 17

A scientist is observing a membrane through which water and some small hydrophobic molecules can freely pass along a concentration gradient from high to low.However,some sugar molecules are too large to pass through the membrane either way without the assistance of passive transport proteins.Additionally,small Na⁺ ions and some proteins can pass through the membrane against the concentration gradient,but both require the assistance of active transport proteins.What general type of membrane are they observing?

Accepted Answer

A)  impermeable 
B)  impenetrable 
C)  semipermeable 
D)  completely permeable 
A)  impermeable 
B)  impenetrable 
C)  semipermeable 
D)  completely permeable

Question 18

Prokaryotes and eukaryotes are primarily distinguished by the absence or presence of internal

Accepted Answer

A)  ribosomes. 
B)  membranes. 
C)  membrane-enclosed organelles. 
D)  cell walls. 
A)  ribosomes. 
B)  membranes. 
C)  membrane-enclosed organelles. 
D)  cell walls.

Question 19

When a white blood cell engulfs an entire bacterial cell by surrounding it with plasma membrane and bringing it into the cell in a vesicle,the white blood cell is accomplishing ________.

Accepted Answer

The answer of When a white blood cell engulfs an...

Question 20

Examine the photo below.This photo shows low-density lipoprotein (LDL)particles bound to receptors on the outside of a cell membrane.You view the same cell later and notice that the LDL particles are now enclosed in vesicles inside of the cell.What would you propose as the explanation for how the LDL particles arrived in their new location? Support your explanation.

Accepted Answer

The most likely way the LDL particles en

A cell that has numerous ________ is a plant cell that plays an important role in photosynthesizing sugars for the entire plant.

transport of molecules across a selectively permeable membrane requires the input of energy from the cell,whereas transport of molecules across a selectively permeable membrane does not require the use of cellular energy.

If the concentration of sugar molecules in water on side "A" of a selectively permeable membrane is 5 percent,and the concentration of sugar molecules in water on side "B" of a selectively permeable membrane is 15 percent,the water will

Match the following cellular structures with their primary function (you may need to use a function more than once). -cell wall

Label the plasma membrane below.Use the following terms: cellular environment, external environment, plasma membrane, hydrophilic heads, hydrophobic tails ,energy, water, sugar, and transport protiens.

Match the following cellular structures with their primary function (you may need to use a function more than once). -Golgi apparatus

Which of the following types of organisms are single-celled (unicellular)?

What additional structures would the cell below need to become a plant cell?

Which of the following statements is true of chloroplasts?

Liposomes form spontaneously from and are important because .

Which of the following statements MOST accurately describes a selectively permeable membrane?

A cell surrounded by only a plasma membrane but containing a nucleus,mitochondria,Golgi apparatus,both smooth and rough ER,ribosomes,cytoskeleton,and lysosomes would be an example of a typical ________ cell.

A long piece of ribbon wired along both long edges is twisted into a helix and wrapped around individual pipe cleaners that have been rolled into spools; this grouping is then twisted (super coiled)again to condense it.This could be best used as a simple model for a

Match the following cellular structures with their primary function (you may need to use a function more than once). -central vacuole

Prokaryotes and eukaryotes are primarily distinguished by the absence or presence of internal

When a white blood cell engulfs an entire bacterial cell by surrounding it with plasma membrane and bringing it into the cell in a vesicle,the white blood cell is accomplishing ________.

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Filters

Exam 4: Life Is Cellular

A cell that has numerous ________ is a plant cell that plays an important role in photosynthesizing sugars for the entire plant.

________ transport of molecules across a selectively permeable membrane requires the input of energy from the cell,whereas ________ transport of molecules across a selectively permeable membrane does not require the use of cellular energy.

If the concentration of sugar molecules in water on side "A" of a selectively permeable membrane is 5 percent,and the concentration of sugar molecules in water on side "B" of a selectively permeable membrane is 15 percent,the water will

Match the following cellular structures with their primary function (you may need to use a function more than once). -cell wall

Label the plasma membrane below.Use the following terms: cellular environment, external environment, plasma membrane, hydrophilic heads, hydrophobic tails ,energy, water, sugar, and transport protiens.

Match the following cellular structures with their primary function (you may need to use a function more than once). -Golgi apparatus

Which of the following types of organisms are single-celled (unicellular)?

What additional structures would the cell below need to become a plant cell?

Which of the following statements is true of chloroplasts?

Liposomes form spontaneously from ________ and are important because ________.

Which of the following statements MOST accurately describes a selectively permeable membrane?

A cell surrounded by only a plasma membrane but containing a nucleus,mitochondria,Golgi apparatus,both smooth and rough ER,ribosomes,cytoskeleton,and lysosomes would be an example of a typical ________ cell.

A long piece of ribbon wired along both long edges is twisted into a helix and wrapped around individual pipe cleaners that have been rolled into spools; this grouping is then twisted (super coiled)again to condense it.This could be best used as a simple model for a

Match the following cellular structures with their primary function (you may need to use a function more than once). -central vacuole

Prokaryotes and eukaryotes are primarily distinguished by the absence or presence of internal

When a white blood cell engulfs an entire bacterial cell by surrounding it with plasma membrane and bringing it into the cell in a vesicle,the white blood cell is accomplishing ________.

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Filters

transport of molecules across a selectively permeable membrane requires the input of energy from the cell,whereas transport of molecules across a selectively permeable membrane does not require the use of cellular energy.

Liposomes form spontaneously from and are important because .