Answers24 - 25 CR - Biology B 0411KBThe Digestive and Excretory Systems

The Digestive and Excretory Systems — Unit test Answers

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Which action is a physical change in digestion?

A
producing enzymes for nutrient absorption
B
absorbing nutrients from food
C
mashing food with teeth
D
salivating to break food into carbohydrates
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

[BLANK]

A
sugar
B
urine
C
blood
D
saliva
4

Which level of organization falls directly after the tissue level when listed in order from least to most complex?

A
organelle
B
cell
C
organ system
D
organ
5

Which structure of the respiratory system moistens and filters inhaled air?

A
pharynx
B
bronchioles
C
nasal cavity
D
trachea
6

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
7

Which is the last section of the digestive system?

A
small intestine
B
liver
C
large intestine
D
rectum
8

What structure(s) in the cardiovascular system connect arteries to veins?

A
valves
B
heart
C
capillaries
D
lymph
9

Which person’s function in a school is similar to the central nervous system’s role in a human body?

A
a cafeteria worker
B
a student
C
a principal
D
a bus driver
10

The Heimlich maneuver is a series of pushing motions on the area just under the diaphragm that helps a person whose airway is blocked. Which best explains how this maneuver helps unblock a person's airway?

A
Pushing the diaphragm causes air to flow out of the lungs, which pushes the blockage out.
B
Pushing the diaphragm causes blood to rush to the area that pushes the blockage out.
C
Pushing the diaphragm allows the brain to produce hormones that push the blockage out.
D
Pushing the diaphragm causes a person's ribs to contract, which pushes the blockage out.
11

During digestion, water is both added and removed. Which area of the digestive system removes water?

A
mouth
B
esophagus
C
liver
D
large intestine
12

The brain and spinal cord work together so the body can receive signals and react to the environment. What is the spinal cord?

A
a cell
B
a tissue
C
an organ
D
an organ system
13

How will Richard’s body react when a friend jumps in front of him and scares him?

A
Richard’s central nervous system will take over, and his peripheral nervous system will play a lesser role.
B
Richard’s peripheral nervous system will take over, and his central nervous system will play a lesser role.
C
Richard’s sympathetic nervous system will take over, and his parasympathetic nervous system will play a lesser role.
D
Richard’s parasympathetic nervous system will take over, and his sympathetic nervous system will play a lesser role.
14

The body obtains sugar from food. Which system most directly affects blood sugar levels?

A
respiratory
B
muscular
C
circulatory
D
digestive
15

Why is an angioplasty an incorrect treatment for an aneurysm?

A
Aneurysms cannot be treated.
B
An angioplasty may rupture the blood vessel wall.
C
An angioplasty can have dangerous drug reactions.
D
Aneurysms are treated only with pacemakers.

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