AnswersEAP-Biology B CRThe Digestive System

The Digestive System — Unit test Answers

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1
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Which component of the cardiovascular system allows the body to function by supplying the cells with oxygen?

A
red blood cells
B
white blood cells
C
platelets
D
plasma
2
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While a home was undergoing a renovation, workers discovered that there was asbestos in the walls. Before any further work could be attempted, the family that owned the house had to evacuate, and specialists were brought in to remove the asbestos. Why would the house contain a substance that forced the family to be evacuated?

A
Asbestos is not harmful, and the family was evacuated due to routine construction protocol.
B
Asbestos was once thought to be very useful, but now it is linked to lung cancer so the family was evacuated.
C
Asbestos is not harmful, but the family was evacuated so that the asbestos could be recycled for another building.
D
Asbestos was thought to be useful and is no longer used due to increasing costs to manufacture it.
3

Review the image below.What is the function of this type of tissue?

Question illustration
A
binding organs and tissues together
B
control and coordination
C
movement
D
protection
4

Which is a response by the skin that promotes the healing of a wound?

A
minimize the flow of blood to the site
B
produce salty sweat to cleanse the site
C
initiate cell division
D
protect against UV light
5

Which best describes sensory and motor neurons?

A
Sensory neurons process information from stimuli receivers; motor neurons process information from muscles or glands.
B
Motor neurons process information from stimuli receivers; sensory neurons process information from muscles or glands.
C
Motor neurons carry information from the sense organs to the central nervous system; sensory neurons carry processed information from the central nervous system back to muscles or glands.
D
Sensory neurons carry information from the sense organs to the central nervous system; motor neurons carry processed information from the central nervous system to muscles or glands.
6

The epidermis of the skin consists of many layers of tightly packed cells. The outermost layer of cells is dead. Which best describes why this occurs?

A
Chemical compounds containing digestive enzymes are located on the outside of the skin, and they destroy the cells.
B
Blood vessels are not located in the epidermis, but in the underlying dermal connective tissue.
C
The outer layer of skin is nervous tissue and nervous tissue will not regenerate.
D
Pathogens on the skin secrete toxins that affect the cellular structure, thus destroying the cell.
7

Which best describes the top and bottom images of muscle contraction?

Question illustration
A
The top image is in step 2, and the bottom image is in step 1.
B
The top image is in step 1, and the bottom image is in step 3.
C
Both images are in step 1.
D
Both images are in step 3.
8

In order to assemble the organic compounds that are necessary for life, enzymes must break down food into their building blocks. What would happen if someone was not able to produce enough amylase?

A
Simple sugars would not be obtained from carbohydrates.
B
Amino acids would not be obtained from proteins.
C
Fatty acids would not be obtained from lipids.
D
Nucleotides would not be obtained from nucleic acids.
9

Taking into consideration the function of the types of tissue and their integrated role in the how the body works, which types of tissue play a role in protecting the body from internal and external hazards?I. epithelialII. muscleIII. connectiveIV. nervous

A
I and III
B
III and IV
C
I, II, and IV
D
I, II, III, and IV
10

Suppose that scientists discover how to grow neurons in the brain tissue of a lizard. What are scientists most likely to do with this discovery?

A
Scientists will work on discovering how neurons grow in other animals.
B
Scientists will discard these findings because lizards and humans belong to different biological classes.
C
Scientists will discard their previous work on neurons and focus on this new line of study.
D
Scientists will apply this discovery in their work to grow neurons in human brain injury cases.
11

What do the salivary glands, the pancreas, and the stomach have in common?

A
They all mechanically break down food.
B
They all are accessory structures of the digestive system.
C
They all help in blood production.
D
They all secrete enzymes that break down food.
12

Scientists use information about digestion to help design new cleaning products because they break down materials. What enzymes should be included in cleaners that are aimed at removing stains from a greasy hamburger patty?

A
protease and amylase
B
nuclease and amylase
C
protease and lipase
D
nuclease and lipase
13

Yolanda pricked her finger on a sharp object. Which type of neuron allowed her body to cause the movement that removed her hand from the sharp object?

A
interneuron
B
relay
C
sensory
D
motor
14

Carpal tunnel syndrome results from too much pressure being applied to the median sensory nerve (pictured below in yellow). Which is a possible symptom of this disorder?

Question illustration
A
difficulty making grasping movements with the hand
B
loss of blood circulation in the hand
C
increase in the temperature of the hand
D
loss of feeling in the hand
15

What is the function of the type of muscle that is pictured below?

Question illustration
A
support and movement of the skeleton
B
movement of food through the digestive system
C
contraction and relaxation of the heart
D
generation and conduction of electrical signals

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