What percentage of the total body weight in humans does blood represent? O 86 O

Question

What percentage of the total body weight in humans does blood represent? O 86 O 496 ? 12% o 16% UESTION 16 What does the heart use as its primary O fatty acids O glucose O amino acids O lactate fuel source? UESTION 17 What is the respiratory quotient (RQ)? O The ratio of CO2 produced to O2 consumed O The ratio of CO2 produced to ATP consumed O The ratio of O2 produced to CO2 consumed O The ratio of 02 produced to ATP consumed UESTION 18 The influence of CO2 and acid on the release of 02 from hemoglobin is known as the: O bohr effect ?frank effect O jama effect hn effect

Explanation / Answer

15. The percentage of total body weight due to blood in human beings is about 7 to 8 %.

Hence the correct option is (8%).

16. The primary fuel source of cardiac muscles is fatty acids.

Hence option ( fatty acids) is correct.

17. Respiratory quotient is defined as the ratio of Carbon dioxide produced by the cells to the amount of oxygen consumed by the cells.

Hence option ( The ratio of CO2 produced to O2 consumed) is correct.

18. When the carbon dioxide combines with water, it forms carbonic acid. This lowers the pH and causes the haemoglobin to release oxygen load. This was first observed by physiologist Bohr in 1904 and is called Bohr effect.

Hence option (Bohr effect) is correct.

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