Question

Which of the following statements about respiration is false: a. Respiration can refer to a chemical...

Which of the following statements about respiration is false:

a.

Respiration can refer to a chemical process that takes place inside human cells

b.

Respiration can refer to breathing (gas exchange) in humans

c.

Respiration is an endergonic (energy-requiring) process overall in humans

d.

In respiration oxygen (O2) is taken in/used and carbon dioxide (CO2) is given off/produced

In the reaction CO2 + H2O –> H2CO3 –> H+ + HCO3 bicarbonate is symbolized by:

a.

CO2

b.

H2O

c.

H2CO3

d.

HCO3

Which of the following statements about molecular oxygen (O2) is false?

a.

Molecular oxygen (O2) dissolves very easily in water

b.

Molecular oxygen (O2) makes up 21% of atmospheric air

c.

Molecular oxygen (O2) is required for aerobic cellular respiration

d.

Molecular oxygen (O2) is more common in the atmosphere than carbon dioxide

Which of the following statements about gas exchange in humans is true?

a.

Humans use almost all of the oxygen (O2) taken in during inhalation

b.

Carbon dioxide (CO2) is the most common gas in exhaled air

c.

Nitrogen (N2) is the most common gas taken in during inhalation

d.

There is usually very little water vapor (H2 O) in exhaled air

Which of the following sequences accurately describes the pathway of air flow during inhalation?

a.

external nares —> glottis —> nasal conchae —> pharynx —> trachea —> bronchi —> alveoli

b.

external nares —> pharynx —> nasal conchae —> glottis —> trachea —> bronchi —> alveoli

c.

external nares —> nasal conchae —> pharynx —> glottis —> trachea —> bronchi —> alveoli

d.

external nares —> nasal conchae —> pharynx —> glottis —> bronchi —> trachea —> alveoli

Homework Answers

Answer #1

First question.

Respiration is and enderogenic process in humans. It's false. In humans respiration does not need energy. Other than that respiration is used to produce or release energy.

Second question.

It's HCO3- . It's the chemical formula of Bicarbonate. H2CO3 is carbonic acid, H2O is water, CO2 is carbon dioxide.

Third question.

Oxygen dissolve in water easily. It's false. It's not that easy to dissolve ocygen in water. We may need to use high pressure for such a process

Fourth question

Nitrogen is the major common gas in inhaled air. It's the most abundant gas in atmosphere. So the inhaled air contain more oxygen

Fifth question.

Correct order is external nares-> nasal conchae -> pharynx-> glottis -> trachea ->bronchi -> alveoli

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
i. Hemoglobin is a protein that carries oxygen. Please tell which of the following statements are...
i. Hemoglobin is a protein that carries oxygen. Please tell which of the following statements are correct. a. when PO2 is low (30-40mmhg) the hemoglobin protein saturation increases b. when PO2 is high (75-100mmhg) the hemoglobin protein is almost entirely saturated c. when PO2 is high (75-100mmhg) the hemoglobin saturation is low d. all of the above ii. Blood circulation to lungs includes two systems. Identify which statement most accurately describes the blood circulation present int he lungs. a. The...
In the ausculatory method, the point at which the first soft tapping sounds can be heard...
In the ausculatory method, the point at which the first soft tapping sounds can be heard with the stethoscope is the: Systolic blood pressure Diastolic blood pressure Absolute blood pressure Systolic over diastolic blood pressure None of the above Lymph capillaries A. weave between tissue cells and blood caillaries B. Have flap-like mini-valves C. are anchored to connective tissue by filaments D. pick up excess tissue fluids E. All of the above Lymph nodes: A. Filter lymph before returning fluid...
Background Almost all animal and plant cells require oxygen and give off carbon dioxide. This is...
Background Almost all animal and plant cells require oxygen and give off carbon dioxide. This is called gas exchange and it occurs by passive diffusion. Some animals do all or most of their gas exchange across their skin (for example amphibians) but they have very low metabolisms and use very little oxygen and get rid of very little carbon dioxide. On the other hand humans (and other mammals) have very high metabolic requirements and we can’t rely on gas exchange...
Respiratory System 1. A dust particle is inhaled and gets into an alveolus without being trapped...
Respiratory System 1. A dust particle is inhaled and gets into an alveolus without being trapped along the way. Describe the path it takes, naming all air passages from the external nares to the alveolus. What would happen to it after arrival in    the alveolus? 2. Contrast the epithelium of the bronchi with that of the alveoli and explain how the structural difference is related their functional difference. 3. List the two anatomical divisions of the respiratory system. 4....