Question 1

How rapidly an organism can absorb nutrients generally depends on

Accepted Answer

A) the surface area available for absorption. 
B) how quickly the nutrient can diffuse into the stomach. 
C) the passive mechanisms that carry the nutrient into the organism. 
D) the volume of the organism that is taking up the nutrients. 
A) the surface area available for absorption. 
B) how quickly the nutrient can diffuse into the stomach. 
C) the passive mechanisms that carry the nutrient into the organism. 
D) the volume of the organism that is taking up the nutrients. A

Question 2

A person has a disorder that prevents the heads of myosin molecules from being released from actin filaments. How would you expect this disorder to affect a muscle in this person's body?

Accepted Answer

The heads of myosin molecules normally bind reversibly to actin filaments. The binding and sliding of myosin along actin filaments at a microscopic level causes muscle contraction. If myosin is not released, the muscle would remain in a contracted position.

Question 3

Match each vitamin to the function or deficiency described below.
-vitamin K

Accepted Answer

A) Deficiency of this vitamin reduces calcium absorption and leads to poor formation of bones and teeth. 
B) This vitamin is used to produce visual pigments in the eyes. 
C) This vitamin protects lipids in cell membranes. 
D) Deficiency of this vitamin leads to scurvy. 
E) Deficiency of this vitamin affects the ability to control bleeding. 
A) Deficiency of this vitamin reduces calcium absorption and leads to poor formation of bones and teeth. 
B) This vitamin is used to produce visual pigments in the eyes. 
C) This vitamin protects lipids in cell membranes. 
D) Deficiency of this vitamin leads to scurvy. 
E) Deficiency of this vitamin affects the ability to control bleeding. E

Question 4

Which of the following vitamins is NOT associated with building or maintaining bones and teeth?

Accepted Answer

A) vitamin B12 
B) vitamin C 
C) vitamin D 
D) vitamin E 
A) vitamin B12 
B) vitamin C 
C) vitamin D 
D) vitamin E

Question 5

Muscle contraction is caused by

Accepted Answer

A) movement of bones that anchor the muscles. 
B) sarcomeres moving along other sarcomeres. 
C) myosin filaments sliding along actin filaments. 
D) contraction of actin and myosin filaments. 
A) movement of bones that anchor the muscles. 
B) sarcomeres moving along other sarcomeres. 
C) myosin filaments sliding along actin filaments. 
D) contraction of actin and myosin filaments.

Question 6

Match each vitamin to the function or deficiency described below.
-vitamin E

Accepted Answer

A) Deficiency of this vitamin reduces calcium absorption and leads to poor formation of bones and teeth. 
B) This vitamin is used to produce visual pigments in the eyes. 
C) This vitamin protects lipids in cell membranes. 
D) Deficiency of this vitamin leads to scurvy. 
E) Deficiency of this vitamin affects the ability to control bleeding. 
A) Deficiency of this vitamin reduces calcium absorption and leads to poor formation of bones and teeth. 
B) This vitamin is used to produce visual pigments in the eyes. 
C) This vitamin protects lipids in cell membranes. 
D) Deficiency of this vitamin leads to scurvy. 
E) Deficiency of this vitamin affects the ability to control bleeding.

Question 7

Which of the following things would you expect to happen if a knee joint was formed without any cartilage?

Accepted Answer

A) The knee would lack any ability to bend. 
B) Bones within the knee would experience friction. 
C) The joint would be able to bend past its normal position. 
D) The knee would lack synovial fluid. 
A) The knee would lack any ability to bend. 
B) Bones within the knee would experience friction. 
C) The joint would be able to bend past its normal position. 
D) The knee would lack synovial fluid.

Question 8

The nutrients in food enter our body by crossing through the epithelial cells that line the ________ intestine.

Accepted Answer

The answer of The nutrients in food enter our body...

Question 9

Muscles that move food along the digestive tract and cause the heart to pump blood without our conscious thought are called ________ muscles.

Accepted Answer

The answer of Muscles that move food along the digestive...

Question 10

Match each vitamin to the function or deficiency described below.
-vitamin D

Accepted Answer

A) Deficiency of this vitamin reduces calcium absorption and leads to poor formation of bones and teeth. 
B) This vitamin is used to produce visual pigments in the eyes. 
C) This vitamin protects lipids in cell membranes. 
D) Deficiency of this vitamin leads to scurvy. 
E) Deficiency of this vitamin affects the ability to control bleeding. 
A) Deficiency of this vitamin reduces calcium absorption and leads to poor formation of bones and teeth. 
B) This vitamin is used to produce visual pigments in the eyes. 
C) This vitamin protects lipids in cell membranes. 
D) Deficiency of this vitamin leads to scurvy. 
E) Deficiency of this vitamin affects the ability to control bleeding.

Question 11

Pancreatic cancer is an especially dangerous disease in humans because the pancreas is

Accepted Answer

A) the organ that produces and stores bile. 
B) the site of synthesis for all the essential amino acids. 
C) one of the organs through which food must pass on its way to the large intestine. 
D) an organ that manufactures many different kinds of digestive enzymes. 
A) the organ that produces and stores bile. 
B) the site of synthesis for all the essential amino acids. 
C) one of the organs through which food must pass on its way to the large intestine. 
D) an organ that manufactures many different kinds of digestive enzymes.

Question 12

Where in the body would you expect to find voluntary muscle that has a banded appearance?

Accepted Answer

A) within the wall of the esophagus 
B) in a muscle that bends the knee 
C) in the heart 
D) within the wall of the stomach 
A) within the wall of the esophagus 
B) in a muscle that bends the knee 
C) in the heart 
D) within the wall of the stomach

Question 13

Minerals are

Accepted Answer

A) organic compounds. 
B) required by the human body in small amounts. 
C) not harmful to humans when ingested in large amounts. 
D) created by chemical reactions within cells. 
A) organic compounds. 
B) required by the human body in small amounts. 
C) not harmful to humans when ingested in large amounts. 
D) created by chemical reactions within cells.

Question 14

Explain why dietary fiber is important in a human's diet.

Accepted Answer

Although dietary fiber does no

Question 15

________ are small, organic nutrients that do not provide the human body with energy and are required only in small quantities; however, they help regulate metabolic processes.

Accepted Answer

The answer of ________ are small, organic nutrients that do...

Question 16

Ligaments are connective tissue that connects ________ to bone.

Accepted Answer

The answer of Ligaments are connective tissue that connects ________...

Question 17

Of the four classes of organic compounds that are found in organisms, ________ are capable of storing the most energy.

Accepted Answer

The answer of Of the four classes of organic compounds...

Question 18

Which letter in this figure identifies the site where most digestion and nutrient absorption takes place?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 19

Which of the following statements about the amino acids that are required by adult humans is true?

Accepted Answer

A) The human body produces 20 amino acids. 
B) There are eight amino acids used as building blocks for human proteins. 
C) Amino acids are the building blocks of carbohydrates. 
D) Amino acids are the building blocks of proteins. 
A) The human body produces 20 amino acids. 
B) There are eight amino acids used as building blocks for human proteins. 
C) Amino acids are the building blocks of carbohydrates. 
D) Amino acids are the building blocks of proteins.

Question 20

A genetic mutation has altered a signaling molecule found embedded within cell membranes. This signaling molecule is most likely a

Accepted Answer

A) protein. 
B) carbohydrate. 
C) fat. 
D) dietary fiber. 
A) protein. 
B) carbohydrate. 
C) fat. 
D) dietary fiber.

Exam 20: Digestive, Muscular, and Skeletal Systems

How rapidly an organism can absorb nutrients generally depends on

A person has a disorder that prevents the heads of myosin molecules from being released from actin filaments. How would you expect this disorder to affect a muscle in this person's body?

Match each vitamin to the function or deficiency described below. -vitamin K

Which of the following vitamins is NOT associated with building or maintaining bones and teeth?

Muscle contraction is caused by

Match each vitamin to the function or deficiency described below. -vitamin E

Which of the following things would you expect to happen if a knee joint was formed without any cartilage?

The nutrients in food enter our body by crossing through the epithelial cells that line the ________ intestine.

Muscles that move food along the digestive tract and cause the heart to pump blood without our conscious thought are called ________ muscles.

Match each vitamin to the function or deficiency described below. -vitamin D

Pancreatic cancer is an especially dangerous disease in humans because the pancreas is

Where in the body would you expect to find voluntary muscle that has a banded appearance?

Minerals are

Explain why dietary fiber is important in a human's diet.

________ are small, organic nutrients that do not provide the human body with energy and are required only in small quantities; however, they help regulate metabolic processes.

Ligaments are connective tissue that connects ________ to bone.

Of the four classes of organic compounds that are found in organisms, ________ are capable of storing the most energy.

Which letter in this figure identifies the site where most digestion and nutrient absorption takes place?

Which of the following statements about the amino acids that are required by adult humans is true?

A genetic mutation has altered a signaling molecule found embedded within cell membranes. This signaling molecule is most likely a

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