Question

Answer any thing u know if u know all plz answer all fast ....​

Answer 1

Explanation:

1. Person 2 is trained and physically fit so his breath rate is lower than person 1 who is untrained

3. Oxygen and carbon dioxide is being transported . water vapour too however it isn't a gas. Haemoglobin present in RBCs is responsible for this.

4. Untrained and obese persons

Answer 2

7.1 : When you exercise, you are making your muscles work harder. This is true no matter what kind of exercise you're doing. If you're lifting weights, you're using the muscles that will give you the body of a fitness model; but if you're doing aerobics or cardiovascular exercise (like running, bicycling, or rowing) you are still using one muscle in particular &md your heart is a muscle.When your muscles, even the heart, are working harder, they are also burning more calories. Your muscles need more oxygen than they normally use to burn these extra calories. Your blood picks up oxygen as it travels through your lungs and delivers it to the muscles you're using. As your level of activity increases, your breathing rate increases to bring more air (oxygen) into your lungs so that your lungs can pump more oxygen into your blood and out to your muscles...

7.2: The respiratory rate is the rate at which breathing occurs. This is usually measured in breaths per minute and is set and controlled by the respiratory centre.

7.3:Transport of Oxygen in the Blood and carbon dioxide

Although oxygen dissolves in blood, only a small amount of oxygen is transported this way. Only 1.5 percent of oxygen in the blood is dissolved directly into the blood itself. Most oxygen—98.5 percent—is bound to a protein called hemoglobin and carried to the tissues.

Hemoglobin

Hemoglobin, or Hb, is a protein molecule found in red blood cells (erythrocytes) made of four subunits: two alpha subunits and two beta subunits (Figure 1). Each subunit surrounds a central heme group that contains iron and binds one oxygen molecule, allowing each hemoglobin molecule to bind four oxygen molecules. Molecules with more oxygen bound to the heme groups are brighter red. As a result, oxygenated arterial blood where the Hb is carrying four oxygen molecules is bright red, while venous blood that is deoxygenated is darker red.

7.4:Although the normal respiratory rate can vary slightly between individuals, there is a range that doctors and nurses consider usual. The normal respiratory rate for healthy adults is between 12 and 20 breaths per minute.

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