Question 1

The obvious structural difference between the two structures shown below is: 
A)the lack of ribosomes on A.
B)the lack of ribosomes on B.
C)the lack of lipids on A.
D)the lack of lipids on B.

Accepted Answer

A

Question 2

In the diagram of the cell shown here,the organelle responsible for the synthesis of fatty acids and steroid hormones is labeled as: 
A)A
B)C
C)E
D)F

Accepted Answer

The organelle responsible for the synthesis of fatty acids and steroid hormones is the smooth endoplasmic reticulum (SER), which is labeled as C in the diagram. The SER lacks ribosomes, which distinguishes it from the rough endoplasmic reticulum (RER), which is labeled as D. The mitochondrion (A) is responsible for cellular respiration and energy production; the golgi apparatus (E) is responsible for processing and packaging of proteins; and the lysosome (F) is responsible for breaking down and recycling cellular waste. None of these organelles are directly involved in fatty acid and steroid hormone synthesis.

Question 3

The thinnest cytoskeletal structures,responsible for cellular locomotion and intracellular movements during cell division are:
A)microfilaments.
B)intermediate filaments.
C)microtubules.
D)mitochondria.

Accepted Answer

Microfilaments, also known as actin filaments, are the thinnest structures in the cytoskeleton and are responsible for cellular locomotion and intracellular movements during cell division. Intermediate filaments provide structural support to the cell, while microtubules are involved in movement of organelles and formation of the spindle apparatus during cell division. Mitochondria are organelles responsible for energy production in the cell and are not part of the cytoskeleton.

Question 4

In the diagram of the cell shown here,the organelle responsible for ATP production is labeled as: 
A)A
B)B
C)C
D)D

Accepted Answer

The answer of In the diagram of the cell shown...

Question 5

After vesicles are created in the endoplasmic reticulum,they usually:
A)fuse with the lysosome and digest its vesicular contents.
B)migrate to the cell membrane to release their contents.
C)fuse with the mitochondrion to provide fuel for ATP production.
D)fuse with the golgi complex for further processing of the contents.

Accepted Answer

After vesicles are created in the endoplasmic reticulum, they usually fuse with the golgi complex for further processing and sorting of the contents before they are transported to their final destinations. The golgi complex is responsible for modifying, sorting, and packaging proteins and lipids into vesicles for secretion or delivery to different parts of the cell.

Question 6

What does the structure indicated by the arrow represent? 
A)Nuclear envelope
B)Nuclear pore
C)Chromatin
D)Nucleolus

Accepted Answer

The answer of What does the structure indicated by the...

Question 7

In the diagram of the cell shown here,the organelle that determines the overall structure of animal cells is labeled as: 
A)A
B)C
C)D
D)E

Accepted Answer

Organelle labeled as C is the cytoskeleton, which determines the overall structure of animal cells by providing the framework and support for the cell. Organelle labeled as A is the nucleus, which contains genetic material, organelles labeled as D and E are mitochondria and endoplasmic reticulum respectively, which are involved in energy production and protein synthesis, but not in determining the overall structure of the cell.

Question 8

The cell membrane is composed of two layers of:
A)proteins with interspersed lipids.
B)hydrophilic lipids, proteins and sugars.
C)phospholipids, with proteins and sugars interspersed.
D)glycoproteins and glycolipids.

Accepted Answer

The cell membrane is composed of a phospholipid bilayer with proteins interspersed throughout. There may also be some sugars attached to the proteins and lipids. Choices A, B, and D all contain elements that are present in the cell membrane, but they are not the primary components.

Question 9

What is the function of the part of the cell membrane that the arrow is pointing to below? 
A)It improves the fluidity of the membrane.
B)It provides a passage for the transport of ions.
C)It defines the cell as belonging to the body.
D)It creates a hydrophobic barrier to aqueous solutes.

Accepted Answer

The answer of What is the function of the part...

Question 10

Net diffusion has stopped in which image? 
A)A
B)B
C)C
D)D

Accepted Answer

The answer of Net diffusion has stopped in which image?...

Question 11

The organelle responsible for the conversion of the pollywog to a frog (the loss of the tadpole's tail)is the:
A)golgi complex.
B)mitochondrion.
C)rough endoplasmic reticulum.
D)lysosome.

Accepted Answer

The answer of The organelle responsible for the conversion of...

Question 12

This figure demonstrates the result of placing a cell in a (an)____________ solution. 
A)hypotonic
B)hypertonic
C)isotonic
D)hyperosmotic

Accepted Answer

In a hypotonic solution, the concentration of solutes outside the cell is lower than inside the cell, causing water to move into the cell and potentially leading to swelling or bursting. This is evident in the figure, where the cell appears larger and more rounded compared to its normal state.

Question 13

Lipid-soluble materials enter and exit the cell via:
A)osmosis across a carrier protein.
B)diffusion across the cell membrane.
C)diffusion through a transport protein.
D)active transport.

Accepted Answer

Lipid-soluble materials, such as oxygen and carbon dioxide, can passively diffuse across the cell membrane due to their ability to dissolve in the lipid bilayer. Therefore, no transport protein or carrier protein is needed, and active transport does not apply.

Question 14

The cell theory includes all of the following EXCEPT:
A)All living things are composed of cells.
B)Cells pass on genetic material to daughter cells during cell division.
C)Cells share similar chemical composition.
D)Cells are made up of similar shapes and sizes.

Accepted Answer

The cell theory states that all living things are composed of cells, cells are the basic units of life, and cells come from preexisting cells. The theory does not state that cells are made up of similar shapes and sizes.

Question 15

In which of the following organelles is DNA found?
A)Golgi body
B)Smooth endoplasmic reticulum
C)Lysosome
D)Nucleus

Accepted Answer

DNA is found in the nucleus of a cell.

Question 16

When glucose is moved into cells from a high concentration to a low concentration using transport proteins,it is referred to as:
A)osmosis.
B)diffusion.
C)facilitated diffusion.
D)filtration.

Accepted Answer

When glucose is moved from a high concentration to a low concentration using transport proteins, it is known as facilitated diffusion. This process is different from simple diffusion, as it requires the assistance of transport proteins to move molecules across the cell membrane. Osmosis refers specifically to the movement of water molecules across a selectively permeable membrane, while filtration is a process that relies on pressure differentials to move molecules across a membrane.

Question 17

In the diagram of the cell shown here,the organelle that houses DNA is labeled as: 
A)A
B)B
C)C
D)D

Accepted Answer

The answer of In the diagram of the cell shown...

Question 18

Name the structure in this illustration. 
A)flagella
B)golgi
C)centrioles
D)lysosome

Accepted Answer

The answer of Name the structure in this illustration. 
A)flagella
B)golgi
C)centrioles
D)lysosome...

Question 19

In the diagram of the cell shown here,what is the function of the structure labeled B? 
A)digestion
B)support
C)DNA isolation
D)protein production

Accepted Answer

The answer of In the diagram of the cell shown...

Question 20

The statement that "all cells arise from preexisting cells" is one of the tenets of the:
A)cell doctrine.
B)cell hypothesis.
C)cell theory.
D)cell dogma.

Accepted Answer

The statement that "all cells arise from preexisting cells" is a central tenet of the cell theory, which states that all living organisms are composed of one or more cells, the cell is the basic unit of life, and all cells arise from preexisting cells. This theory was proposed by Schleiden, Schwann, and Virchow, and is widely accepted in modern biology. The terms "cell doctrine," "cell hypothesis," and "cell dogma" are not commonly used and do not refer to this specific principle of cell biology.

Quiz 4: Organization and Communication

The obvious structural difference between the two structures shown below is:

In the diagram of the cell shown here,the organelle responsible for the synthesis of fatty acids and steroid hormones is labeled as:

The thinnest cytoskeletal structures,responsible for cellular locomotion and intracellular movements during cell division are:

In the diagram of the cell shown here,the organelle responsible for ATP production is labeled as:

After vesicles are created in the endoplasmic reticulum,they usually:

What does the structure indicated by the arrow represent?

In the diagram of the cell shown here,the organelle that determines the overall structure of animal cells is labeled as:

The cell membrane is composed of two layers of:

What is the function of the part of the cell membrane that the arrow is pointing to below?

Net diffusion has stopped in which image?

The organelle responsible for the conversion of the pollywog to a frog (the loss of the tadpole's tail) is the:

This figure demonstrates the result of placing a cell in a (an) ____________ solution.

Lipid-soluble materials enter and exit the cell via:

The cell theory includes all of the following EXCEPT:

In which of the following organelles is DNA found?

When glucose is moved into cells from a high concentration to a low concentration using transport proteins,it is referred to as:

In the diagram of the cell shown here,the organelle that houses DNA is labeled as:

Name the structure in this illustration.

In the diagram of the cell shown here,what is the function of the structure labeled B?

The statement that "all cells arise from preexisting cells" is one of the tenets of the: