Q65 of 367 Page 48

Which of the following is known as the energy currency of cells in biology ?

The energy currency in the living organisms is called as “ATP”. During anaerobic respiration, it is produced in cytoplasm while in higher organisms, which respire aerobically, it is produced in mitochondria.

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63

Which of the following statements are correct ?

(i) pyruvate can be converted into ethanol and carbon dioxide by yeast


(ii) fermentation takes place in the case of aerobic bacteria


(iii) fermentation takes place in mitochondria


(iv) fermentation is a form of anaerobic respiration

 64

Which of the following statements are true about respiration?

(i) during inhalation, ribs move inward and diaphragm is raised.


(ii) the. gaseous exchange takes place in the alveoli.


(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.


(iv) alveoli increase surface area for the exchange of gases

 66

The two organisms which breathe only through their moist skin are :

 67

One of the following animals does not use tracheae as the respiratory organs. This animal is: