Question 1

Mature red blood cells do not have a well-defined nucleus or other membrane-bound organelles. What is the advantage of this characteristic?

Accepted Answer

The answer of Mature red blood cells do not have...

Question 2

The Mars rover Curiosity finds a living organism on the red planet. Scientists would know that it is eukaryotic and not prokaryotic if ________.

Accepted Answer

A)  it has membrane-bound organelles 
B)  it has a cytoskeleton 
C)  its diameter is 10 μm 
D)  it has six internal membranes

Question 3

You find a strange infection in your mouth and visit your dentist. The dentist said the new organism was prokaryotic because it had ________.

Accepted Answer

A)  circular DNA 
B)  DNA in the nucleus 
C)  relatively large cells 
D)  membrane-bound organelles

Question 4

A red blood cell has lost its nucleus to make more space for carrying oxygen. This is an example of ________.

Accepted Answer

A)  a prokaryotic cell 
B)  a cell that is not living 
C)  the relationship between structure and function 
D)  a cell whose DNA is circular

Question 5

If a new anesthetic were developed that entered the nerve cells efficiently, why would it be important for the substance to be lipophilic (to dissolve in lipids)?

Accepted Answer

The answer of If a new anesthetic were developed that...

Question 6

Some drugs used in chemotherapy stop cell division by affecting the cytoskeleton. The drugs would cause functional disabilities in which of the following?

Accepted Answer

A)  flagella 
B)  cilia 
C)  neither flagella nor cilia 
D)  both flagella and cilia

Question 7

________ are microscopic prokaryotes inhabiting, among other hostile places, hot springs and very salty waters.

Accepted Answer

The answer of ________ are microscopic prokaryotes inhabiting, among other...

Question 8

Compare the composition, structure, and function of cilia and flagella.

Accepted Answer

The answer of Compare the composition, structure, and function of...

Question 9

Compare and contrast passive and active transport mechanisms, and give an example of each.

Accepted Answer

The answer of Compare and contrast passive and active transport...

Question 10

Cellular structures that function in movement and consist of numerous short hairlike extensions from the cell are called ________.

Accepted Answer

The answer of Cellular structures that function in movement and...

Question 11

A reddish chemical, lipofuscin, is found in greater quantities in cells of older people than in those from younger people. This chemical should be broken down in the cells. Which specific type of organelle is not working as well in the seniors?

Accepted Answer

A)  lysosome 
B)  mitochondrion 
C)  nucleus 
D)  rough endoplasmic reticulum

Question 12

Briefly explain the differences between cellular respiration and fermentation. How do these processes differ in terms of energy output for the cell?

Accepted Answer

The answer of Briefly explain the differences between cellular respiration...

Question 13

The three types of microscopes used to look at cells and parts of cells are the transmission electron microscope, scanning electron microscope, and ________.

Accepted Answer

The answer of The three types of microscopes used to...

Question 14

________ is the ingestion of large molecules and foreign substances through the phospholipid membrane.

Accepted Answer

The answer of ________ is the ingestion of large molecules...

Question 15

Most of the energy used by the cell is converted to ATP in ________.

Accepted Answer

A)  lysosomes 
B)  Golgi complexes 
C)  nuclei 
D)  mitochondria

Exam 4: The Cell