Red Blood Cells (RBCs) Quiz

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Questions and Answers

What is the approximate lifespan of red blood cells in the human body?

  • 100-120 days (correct)
  • 60 seconds
  • 40-45% of body's lifetime
  • 2.4 million seconds

What is the main function of red blood cells in vertebrates?

  • Storage of carbon dioxide
  • Production of hemoglobin
  • Transport of carbon monoxide
  • Transport of oxygen (correct)

What gives the red color to red blood cells?

  • Hemoglobin genes
  • Carbon dioxide
  • Heme group of hemoglobin (correct)
  • Oxygen

Which vertebrate species do not have red blood cells?

<p>Crocodile icefish (B)</p> Signup and view all the answers

What is the main compound that carries oxygen in muscle cells?

<p>Myoglobin (D)</p> Signup and view all the answers

What is the main function of red blood cells?

<p>Transporting oxygen to body tissues (C)</p> Signup and view all the answers

What is the role of hemoglobin in red blood cells?

<p>Binding and transporting oxygen (B)</p> Signup and view all the answers

What characterizes the structure of human red blood cells?

<p>Flexible biconcave disks (C)</p> Signup and view all the answers

Why do red blood cells lack a cell nucleus and organelles?

<p>To accommodate maximum space for hemoglobin (D)</p> Signup and view all the answers

What gives red blood cells their red color?

<p>Hemoglobin (D)</p> Signup and view all the answers

Flashcards

Red blood cell lifespan

Red blood cells have a lifespan of about 100-120 days in the human body.

Red blood cell function

The primary function of red blood cells in vertebrates is to transport oxygen throughout the body.

Red blood cell color

Hemoglobin, a protein containing a heme group, gives red blood cells their characteristic red color.

Crocodile icefish exception

The crocodile icefish is a rare exception among vertebrates, lacking red blood cells.

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Myoglobin function

Myoglobin, a protein found in muscle cells, binds and stores oxygen for muscle function.

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Red blood cell role

Red blood cells primarily function in transporting oxygen to body tissues.

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Hemoglobin role

Hemoglobin within red blood cells binds and transports oxygen throughout the body.

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Red blood cell structure

Human red blood cells are characterized by their flexible biconcave disk shape.

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Red blood cell features

Red blood cells lack a nucleus and organelles to maximize space for carrying hemoglobin.

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Red blood cell color source

Hemoglobin, the iron-containing protein in red blood cells, gives them their characteristic red color.

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