Unit Test — Unit test Answers

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infectiousnoninfectioustoxiccontaminated

A
infectious
B
noninfectious
C
toxic
D
contaminated
3

Which blood component makes up 41% of the blood’s volume?

A
plasma
B
red blood cells
C
platelets
D
white blood cells
4

Skeletal muscle is controlled by the organism.Which best describes what this means in terms of movement?

A
Any muscle attached to the skeleton is voluntary and may be used for movement.
B
Some of the muscle attached to the skeleton is involuntary and may be used for movement.
C
Some of the muscle attached to the skeleton is voluntary and may be used for movement.
D
All of the muscles attached to the skeleton are involuntary and may be used for movement.
6

Which list shows three components of an organ system in order of least complex to most complex?

A
red blood cell, heart, tissue
B
skeleton, bone, bone cell
C
muscle cell, muscle tissue, stomach
D
lung, lung tissue, circulatory system
7

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. By changing the amount of water in the blood, blood pressure can change. The excretory system can help to lower blood pressure.Which would most likely occur in the kidney?

A
More water would be transferred from the nephron.
B
Less water would be absorbed into the nephron.
C
The amount of water in the bladder would decrease.
D
The amount of water in the blood would increase.
8

Veins take blood back to the heart. Which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart?

A
carbon dioxide
B
oxygen
C
nitrogen
D
hydrogen
9

What is the name of the state you are in ,when you are maintaining a stable internal environment despite changing external conditions ?

A
Homeostasis
B
Temperature
C
Imbalance
D
Resting
10

PeristalsisSalivationDigestionSecretion

A
Peristalsis
B
Salivation
C
Digestion
D
Secretion
11

Sperm are produced in the

A
glands
B
sperm duct.
C
testes.
D
urinary bladder.
12

Which shows a correct association between a structure and one of its functions?

A
Pores receive sensory information.
B
Oil regulates temperature.
C
Vitamin D protects against bacteria.
D
Sweat glands remove waste.
13

What is the main function of the reproductive system?

A
to transport substances
B
to remove wastes
C
to continue the species
D
to make hormones
14

Which are included in the inflammatory response? Select three options.painswellingantibodiesmucusredness

A
pain
B
swelling
C
antibodies
D
mucus
E
redness
15

immunity occurs when a mother breastfeeds her baby.

Answer not available
16

dendriteneuronreceptorstimulus

A
dendrite
B
neuron
C
receptor
D
stimulus
17

Which is the temporary storage tank for urine?

A
bladder
B
stomach
C
kidney
D
urethra
18

Sound can be heard when air passes over a respiratory structure that is located between the pharynx and the trachea.Which structure is responsible for the voice?

A
the nose
B
the larynx
C
the lung
D
the alveoli
19

Which product of respiration is considered waste material and leaves the alveoli?

A
oxygen
B
water
C
carbon dioxide
D
carbon monoxide

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