Gaseous Exchane & Tansport In Animals

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| By Rena618

Rena618

Community Contributor

Quizzes Created: 2 | Total Attempts: 1,330

Questions: 10 | Attempts: 71 | Updated: Jun 18, 2024

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Questions and Answers

1.

What is the color of oxygenated blood?
- A.
  
  Red
- B.
  
  Blue
Correct Answer
A. Red

Explanation
Oxygenated blood is red in color because it contains a high concentration of oxygen-bound hemoglobin. Hemoglobin is a protein in red blood cells that binds to oxygen molecules, giving blood its red color. Oxygenated blood is typically bright red and is found in arteries, which carry oxygen from the lungs to the body's tissues.

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2.

Choose the option that does not refer to arteries.
- A.
  
  Lie deep within the body
- B.
  
  High blood pressure
- C.
  
  Take blood to the heart.
- D.
  
  Thick elastic walls.
Correct Answer
C. Take blood to the heart.

Explanation
The option "take blood to the heart" does not refer to arteries because arteries carry blood away from the heart to various parts of the body, not towards the heart. The other options, such as "lie deep within the body," "high blood pressure," and "thick elastic walls," are characteristics or functions associated with arteries.

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3.

There are different types of blood cells. Choose all the ones that fall under the category of leucocytes.
- A.
  
  Erythrocytes
- B.
  
  Leucocytes
- C.
  
  Phagocytes
- D.
  
  Lymphocytes
- E.
  
  Thrombocytes
Correct Answer(s)
C. Phagocytes
D. Lymphocytes

Explanation
Leucocytes, also known as white blood cells, are a type of blood cell that plays a crucial role in the immune system. They help to fight off infections and diseases. Phagocytes are a type of leucocyte that engulf and destroy foreign particles and bacteria. Lymphocytes are another type of leucocyte that are responsible for producing antibodies and coordinating the immune response. Therefore, both phagocytes and lymphocytes fall under the category of leucocytes.

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4.

Capillary walls are composed of a single layer of cells.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Capillary walls are composed of a single layer of cells because capillaries are the smallest blood vessels in the body and their walls are thin to allow for the exchange of gases, nutrients, and waste products between the blood and surrounding tissues. This single layer of cells, called endothelial cells, allows for easy diffusion of substances and ensures efficient exchange. Multiple layers of cells would hinder this process and make it less effective. Therefore, the statement that capillary walls are composed of a single layer of cells is true.

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5.

Veins carry blood at low pressure, carry blood to the heart and have no valves.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Veins actually carry blood at low pressure and carry blood towards the heart. However, they do have valves that prevent the backflow of blood and ensure that it flows in one direction. Therefore, the statement that veins have no valves is incorrect.

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6.

When you think of breathing, what is the gas that is not talked about?
- A.
  
  Hydrogen
- B.
  
  Oxygen
- C.
  
  Carbon Dioxide
Correct Answer
A. Hydrogen

Explanation
When thinking about breathing, the gas that is not commonly talked about is hydrogen. This is because hydrogen is not a major component of the air we breathe. Oxygen is the primary gas that we inhale and is essential for our survival. Carbon dioxide is the waste gas that we exhale. While hydrogen can be found in small amounts in the atmosphere, it is not typically discussed in relation to breathing.

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7.

Blood that has no oxygen is called:
- A.
  
  Oxygenated blood
- B.
  
  Deoxygenated blood
Correct Answer
B. Deoxygenated blood

Explanation
Deoxygenated blood refers to blood that has no oxygen. This blood has already delivered its oxygen to the body tissues and is returning to the heart and lungs to be reoxygenated. It is typically darker in color, such as a deep red or maroon, compared to oxygenated blood. This distinction is important as oxygenated blood is necessary for the body's vital functions, while deoxygenated blood carries waste products like carbon dioxide.

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Current Version
Jun 18, 2024

Quiz Edited by
ProProfs Editorial Team
May 15, 2012

Quiz Created by
Rena618

Gaseous Exchane & Tansport In Animals

What is the color of oxygenated blood?

Choose the option that does not refer to arteries.

There are different types of blood cells. Choose all the ones that fall under the category of leucocytes.

Capillary walls are composed of a single layer of cells.

Veins carry blood at low pressure, carry blood to the heart and have no valves.

When you think of breathing, what is the gas that is not talked about?

Blood that has no oxygen is called: