Question 1

The organelle shown below often functions in what process?

Accepted Answer

A)  Protein production 
B)  Digestion 
C)  Support 
D)  Lipid synthesis 
A)  Protein production 
B)  Digestion 
C)  Support 
D)  Lipid synthesis

Question 2

A compound secreted in one area of the body that is active in another area; usually carried by the blood is called a hormone.

Accepted Answer

A) True 
 B)False

Question 3

Osmosis is a form of active transport.

Accepted Answer

A) True 
 B)False

Question 4

The overall function of cellular organelles is to maintain homeostasis.

Accepted Answer

A) True 
 B)False

Question 5

Cell-to-cell junctions which allow for instantaneous communication can be found in which kind of cells?

Accepted Answer

A)  Red blood cells 
B)  Cartilage 
C)  Heart muscle cells 
D)  Bone cells 
A)  Red blood cells 
B)  Cartilage 
C)  Heart muscle cells 
D)  Bone cells

Question 6

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

Accepted Answer

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. 
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.

Question 7

What is the name of the process shown in this figure?

Accepted Answer

A)  Active transport 
B)  Facilitated diffusion 
C)  Osmosis 
D)  Diffusion 
A)  Active transport 
B)  Facilitated diffusion 
C)  Osmosis 
D)  Diffusion

Question 8

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

Accepted Answer

A)  microfilaments. 
B)  intermediate filaments. 
C)  microtubules. 
D)  mitochondria. 
A)  microfilaments. 
B)  intermediate filaments. 
C)  microtubules. 
D)  mitochondria.

Question 9

DNA is in the form of chromosomes during __________________.

Accepted Answer

cell divis

Question 10

The majority of ATP energy production occurs during glycolysis.

Accepted Answer

A) True 
 B)False

Question 11

Mitochondria are believed to have come from free-living ____________ billions of years ago.

Accepted Answer

The answer of Mitochondria are believed to have come from...

Question 12

_________________ helps to maintain the viscosity of the plasma membrane.

Accepted Answer

The answer of _________________ helps to maintain the viscosity of...

Question 13

Sodium/potassium ATPase is a reciprocal pump that moves potassium ions into the cell while pumping sodium ions out of the cell.

Accepted Answer

A) True 
 B)False

Question 14

When cells send messengers to signal other cells, they use _____________ to act on neighboring cells and _________________ to act on distant target cells.

Accepted Answer

paracrines

Question 15

A compound dissolved in a solvent is called a ___________.

Accepted Answer

The answer of A compound dissolved in a solvent is...

Question 16

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

Accepted Answer

A)  cell doctrine. 
B)  cell hypothesis. 
C)  cell theory. 
D)  cell dogma. 
A)  cell doctrine. 
B)  cell hypothesis. 
C)  cell theory. 
D)  cell dogma.

Question 17

The cell membrane is composed of two layers of:

Accepted Answer

A)  proteins with interspersed lipids. 
B)  hydrophilic lipids, proteins and sugars. 
C)  phospholipids, with proteins and sugars interspersed. 
D)  glycoproteins and glycolipids. 
A)  proteins with interspersed lipids. 
B)  hydrophilic lipids, proteins and sugars. 
C)  phospholipids, with proteins and sugars interspersed. 
D)  glycoproteins and glycolipids.

Question 18

Lipid-soluble materials enter and exit the cell via:

Accepted Answer

A)  osmosis across a carrier protein. 
B)  diffusion across the cell membrane. 
C)  diffusion through a transport protein. 
D)  active transport. 
A)  osmosis across a carrier protein. 
B)  diffusion across the cell membrane. 
C)  diffusion through a transport protein. 
D)  active transport.

Question 19

Paracrines are hormones that:

Accepted Answer

A)  are released into the bloodstream, potentially reaching every cell of the body. 
B)  are mostly used when quick responses are required. 
C)  allow physical connections between adjacent cells. 
D)  provide long-distance communication. 
A)  are released into the bloodstream, potentially reaching every cell of the body. 
B)  are mostly used when quick responses are required. 
C)  allow physical connections between adjacent cells. 
D)  provide long-distance communication.

Question 20

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

Accepted Answer

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. 
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.

Exam 4: Cells: Organization and Communication

The organelle shown below often functions in what process?

A compound secreted in one area of the body that is active in another area; usually carried by the blood is called a hormone.

Osmosis is a form of active transport.

The overall function of cellular organelles is to maintain homeostasis.

Cell-to-cell junctions which allow for instantaneous communication can be found in which kind of cells?

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

What is the name of the process shown in this figure?

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

DNA is in the form of chromosomes during __________________.

The majority of ATP energy production occurs during glycolysis.

Mitochondria are believed to have come from free-living ____________ billions of years ago.

_________________ helps to maintain the viscosity of the plasma membrane.

Sodium/potassium ATPase is a reciprocal pump that moves potassium ions into the cell while pumping sodium ions out of the cell.

When cells send messengers to signal other cells, they use _____________ to act on neighboring cells and _________________ to act on distant target cells.

A compound dissolved in a solvent is called a ___________.

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

The cell membrane is composed of two layers of:

Lipid-soluble materials enter and exit the cell via:

Paracrines are hormones that:

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

What Is Life

Where Do We Come From and Where Do We Fit

Everyday Chemistry of Life

Tissues

The Skeletomuscular System

The Nervous System

The Special Senses

Immunity and the Lymphatic System

Infectious Disease and Epidemiology

The Human Microbiome

Cancer

The Cardiovascular System

The Respiratory System: Movement of Air

Nutrition: You Are What You Eat

The Digestive System

The Urinary System

The Endocrine System and Development

The Reproductive Systems: Maintaining the Species

Pregnancy: Development From Conception to Newborn

Inheritance, Genetics, and Molecular Biology

Filters

When cells send messengers to signal other cells, they use _ to act on neighboring cells and _____ to act on distant target cells.