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Respiration Unit Exam

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Respiration is the process of gas exchange between the atmosphere and body cells. There are 4 phases. The movement of air into the lungs is called

a)

internal respiration

b)

external respiration

c)

ventilation

d)

gasping

2.
What is the name of the 1st step of cellular respiration?
a)
Glycolysis
b)
Kreb's Cycle
c)
ETC
d)
Anaerobic respiration
3.
Where does glycolysis take place?
a)
Cytoplasm
b)
Stroma
c)
Thylakoid
d)
Mitochondria
4.
Where does aerobic respiration take place?
a)
Cytoplasm
b)
Mitochondria
c)
Stroma
d)
Thylakoid
5.
What is the net gain of ATP during glycolysis?
a)
1
b)
2
c)
4
d)
34
6.
Which type of respiration occurs in the presence of oxygen?
a)
Aerobic
b)
Anaerobic
7.

Which type of respiration occurs in the absence of oxygen?

a)

Aerobic

b)

Anaerobic

8.
What are the two reactants of cellular respiration?
a)
C6H12O6 & 6CO2
b)
6 CO2 & 6H2O
c)
C6H12O& 6O2
d)
6CO2 & 6O2
9.
Along with 2ATP, what is produced during glycolysis?
a)
6CO2
b)
6O2
c)
C6H12O6
d)
2 pyruvate
10.

What are the two products of aerobic respiration?

a)

Glucose & oxygen

b)

Carbon dioxide & water

c)

Lactic acid

d)

Carbon monoxide

11.

What is the first stage of aerobic respiration called?

a)

Krebs Cycle (Citric acid cycle)

b)

Calvin cycle

c)

Glycolysis

d)

ETC

12.
What is the second stage of aerobic respiration?
a)
Calvin cycle
b)
Kreb's cycle
c)
Glycolysis
d)
ETC
13.
Which is a product of Kreb's Cycle?
a)
Carbon dioxide
b)
Glucose
c)
Pyruvate
d)
Water
14.
Which is a product of the ETC?
a)
Carbon dioxide
b)
Glucose
c)
Oxygen
d)
Water
15.
Which type of fermentation occurs in muscles?
a)
Alcoholic 
b)
Lactic acid
16.

Your exercise capacity is inherited from your _____________ since all the mitochondria in an individual's body are inherited from this parent. If this parent is a great endurance athlete, you will have the capacity to be one as well.

a)

Mother

b)

Father

17.

A conclusion that can be drawn from reading "Mitochondria Functions and Training" is that

a)

an increase in the intensity of training brings about the greatest adaptive response in the mitochondria

b)

60-90 minutes of slow intensity training show greatest improvement of mitochondrial density

c)

fast twitch and slow twitch muscle respond the same to the same exercise intenstity

d)

mitochondrial numbers are not influenced by key hormones, such as thyroxine, produced by the thyroid gland.

18.

Lactate Threshold is

a)

the point at which the intensity of exercise is greater then that which can be supported by the available oxygen supply

b)

an immediate transition from aerobic to anaerobic metabolism

c)

independent of lactic acid accumulation

d)

reached in 8-10 seconds

19.

The Phoshpogen system

a)

consists of small stores of high energy ATP and creatine phosphate (CP) in the muscle

b)

is the primary energy system used in events taking 8-10 seconds

c)

does not produce lactic acid

d)

all of these

20.

The lactate system utilizes

a)

fat as fuel

b)

creatine phosphate as fuel

c)

water as fuel

d)

glycogen as fuel

21.

Lactic acid is formed

a)

when exercise intensity is high

b)

when the energy requirement is high

c)

in fast contracting muscle fibers

d)

all of these

22.

Endurance training causes which of the following changes in red muscle fibers?

a)

increases the size and the number of mitochondria

b)

increases the amount of enzymes for aerobic respiration

c)

increases the number of blood vessels

d)

increases the amount of myoglobin

e)

all of these

23.

Lactate is recognized as a key substance to provide energy, produce glucose and liver glycogen and is the preferred fuel source of highly oxidative muscle fibers.

a)

true

b)

fasle

24.

Blood lactate levels are only a measure of lactate accumulation, not lactate production. The faster lactate can be shuttled back to pyruvate and used as a fuel in the aerobic pathway, the less accumulation of lactate in the blood, the more work the athlete can do.

a)

true

b)

false

25.

All 3 energy pathways are used in the human body simultaneously. The intensity of work determines which energy pathway dominates.

a)

true

b)

false

26.

Respiration is the process of gas exchange between the atmosphere and body cells. There are 4 phases. Gas exchange between the air & blood is called

a)

internal respiration

b)

external respiration

c)

ventilation

d)

gasping

27.

The correct pathway of air into the body is

a)

alveoli → pharynx → trachea → nasal cavity → bronchi → bronchioles

b)

bronchi → trachea → pharynx → nasal cavity → alveoli → bronchioles

c)

nasal cavity → pharynx → trachea → bronchi → bronchioles → alveoli

d)

nasal cavity → trachea → pharynx → alveoli → bronchioles → bronchi

28.

Contraction of the external intercostal muscles causes which of the following to occur?

a)

The diaphragm moves downward

b)

The rib cage is compressed

c)

The thoracic cavity volume decreases

d)

The ribs and sternum move upward

29.

The majority of the air we breathe is

a)

oxygen gas

b)

carbon dioxide gas

c)

carbon monoxide gas

d)

nitrogen gas

30.

Breathing is an involuntary act controlled by the respiratory centers of the brain called

a)

cerebrum

b)

hypothalamus

c)

cerebellum

d)

lower medulla oblongata & pons

31.

Respiratory centers of the brain control respiration by sensing levels of

a)

oxygen

b)

carbon dioxide

c)

carbon monoxide

d)

adrenaline

32.

The partial pressure of carbon dioxide is 45 mm Hg in the blood & 40 mm Hg in the alveoli. What happens to the carbon dioxide?

a)

It diffuses into the blood

b)

It diffuses into the alveoli

c)

The gradient is too small for carbon dioxide to diffuse

d)

It decomposes into carbon and oxygen

33.

The normal breathing rate per minute at rest is approximately _____ breaths in adults.

a)

10 – 12

b)

12 – 15

c)

15 – 25

d)

25 – 30

34.

The epiglottis is a flap-like structure that stands upright, allowing air to enter the larynx . During swallowing, it presses downward & prevents food from entering the

a)

stomach

b)

esophagus

c)

trachea

d)

pharynx

35.

This condition is caused by oxygen deficiency and can be caused by inadequate blood flow, poisons / toxins (like CO)

a)

apnea

b)

hypoxia

c)

anemia

d)

cystic fibrosis

36.

Cigarette smoking causes

a)

decrease in airway conduction of approximately 50% on average

b)

a reduction in oxygen-carrying capacity of the blood

c)

lung disease by damaging your airways and the alveoli

d)

all of the above

37.

A condition in which the smooth muscle lining the airway constrict, reducing the size of the airways, cutting down on the flow of air and is accompanied by symptoms of wheezing, shortness of breath and coughing, is

a)

asthma

b)

pneumothorax

c)

pleural thickening

d)

apnea

38.

A condition in which airways become inflamed and narrower, often due to viral infection, which restricts the flow of air and increases the work of the respiratory muscles is

a)

asthma

b)

bronchitis

c)

emphysema

d)

apnea

39.

A condition in which the pleural cavity becomes filled with air that has entered through an opening in the chest is called

a)

hemothorax

b)

pneumothorax

c)

thoracadorsalitis

d)

traumatic asphyxia

40.

The device used to measure lung capacity is called a

a)

stethoscope

b)

lung – o – meter

c)

spirometer

d)

sphygmomanometer

41.

Which of the following prevents the alveoli from collapsing?

a)

residual volume

b)

tidal volume

c)

expiratory reserve volume

d)

inspiratory reserve volume

42.

This hormone raises blood glucose levels, converting stored glycogen to glucose.

a)

erythropoietin (EPO)

b)

glucagon

c)

insulin

d)

carbonic anhydrase

43.

Which of the following represents the correct order of stored energy utilization?

a)

Fat → Protein → Starch / Glucose

b)

Protein → Starch / Glucose → Fat

c)

Starch / Glucose → Protein → Fat

d)

Starch / Glucose → Fat → Protein

44.

Endurance performance is determined by the athlete’s ability to

a)

be willing to withstand pain and discomfort associated with prolonged exercise

b)

consume oxygen in muscle cells

c)

to have inherited, in large quantity, type I (slow twitch) muscle fibers

d)

have a large vital capacity

e)

all of the above

45.

The maximum amount of oxygen (mL) used in one minute per Kg of body weight is

a)

CO2max

b)

VO2max

c)

O2max

d)

NO2max

46.

During graded maximal exercise, the point at which blood lactate concentration starts to accumulate (rise above resting values) is known as (choose all that apply)

a)

(RER) CO2 / O2 exchange ratio of 0.0

b)

(RER) CO2 / O2 exchange ratio of 1.0

c)

lactate threshold

d)

aerobic threshold

47.

This protein is responsible for carrying most O2 throughout the body in the blood.

a)

hemoglobin

b)

iron

c)

myoglobin

d)

myosin

48.

The volume of air that is normally exhaled after a normal inhalation at rest is known as

a)

tidal volume (TV)

b)

expiratory reserve volume (ERV)

c)

vital capacity (VC)

d)

reserve volume (RV)

49.

The volume of air that can be maximally exhaled after a maximal inhalation is known as

a)

tidal volume (TV)

b)

expiratory reserve volume (ERV)

c)

vital capacity (VC)

d)

residual volume (RV)

50.

Which of the following activities uses mainly the lactic acid fermentation pathway?

a)

Short Sprints (100-200 M)

b)

Intermediate Sprint (400-800M)

c)

One Mile run

d)

10K (6.2 Miles)

e)

Marathon (26.2 Miles)