In human physiology, oxygen delivery to tissues is a critical function of the circulatory system. When blood is oxygenated in the lungs, each 100 ml of this oxygen-rich blood has the capability to deliver oxygen to various tissues throughout the body.
This oxygen delivery process is primarily facilitated by hemoglobin, the protein in red blood cells that binds to oxygen. Under normal physical conditions:
Thus, every 100 ml of oxygenated blood can deliver about 5 ml of O2 to the tissues, aligning with the physiological characteristics of hemoglobin and the oxygen transport process.
Correct Answer: 5 ml
Which of the following statements about the pharynx and larynx is/are correct?
(1) The pharynx serves as a pathway for both food and air.
(2) The larynx is involved in the production of sound.
(3) The pharynx contains the vocal cords.
(4) The larynx prevents food from entering the trachea.
Choose the correct options from the given below:
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is : 
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The current passing through the battery in the given circuit, is: 
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:
A metabolic process, which is carried out by all living organisms including plants, animals, and humans for the production of energy and to stay alive is Respiration. Except for required anaerobes, every other organism from amoeba to humans needs oxygen for survival. And evolution has reported a number of systems that allows the exchange of gases in organisms.
Breathing can be simply derived as the process of inhaling oxygen gas from the atmosphere and exhaling the carbon dioxide gas back into the atmosphere is termed breathing and the process is commonly known as respiration.
Read More: Breathing and Exchange of Gases