Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

Most oxygen in blood is transported _______.

  1. a. in red blood cells
  2. b. in white blood cells
  3. c. in platelets
  4. d. bound to LDLs

Summary Introduction

Concept introduction: Blood is made of different constituents. It is mainly composed of blood cells suspended in blood plasma. Red blood cells, white blood cells, and platelets are the commonly seen cells in the blood. Out of this, RBC is involved in oxygen transport, WBC in immunity, and platelets for blood clotting.


Reason for correct answer: Red blood cells are one of the abundantly seen cardinal blood cells that are mainly responsible for the transport of oxygen from lungs to different body parts. It also helps in removing carbon dioxide from cells.  In mammalian blood, RBCs are like a flexible disk with a biconcave shape that helps the cell to increase its oxygen transport efficiency. Inside the cavity of every RBC, there is a protein called hemoglobin. While transporting to different parts of the body, oxygen molecule always binds to the heme group of hemoglobin. The special structural features of RBCs are really meant for an efficient oxygen transport.

Option a. is given as “in red blood cells”.

Red blood cells are specially designed to transport oxygen to different parts of the body with high efficiency. Oxygen transport in the body can be done with the help of only RBC...

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