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WorksheetsRESPIRATION
Total questions: 10
Worksheet time: 7mins
When air is blown into limewater, it turns milky because of the presence of __________in exhaled air
nitrogen
oxygen
carbon dioxide
milk
Glucose is converted into pyruvate in ______________
Mitochondria
Cytoplasm
When yeast respires anaerobically, it produces energy, carbon dioxide and _____________
Ethanol
Lactic acid
Pyruvate is converted into energy and lactic acid, during anaerobic respiration in ________________
Mitochondria
Muscles
___________________ is the energy currency of cells, and is found in mitochondria
Adenosine tri phosphate
Adenosine monophosphate
In green plants, at night ____________gas is released into air.
Oxygen
Carbon dioxide
During breathing, fishes take in water containing dissolved oxygen through ______________
Mouth
Gills
In humans, trachea is supported by rings of _____________to make sure that the air passage do not collapse
Bones
Cartilage
Muscles
In lungs, ___________________ provides a surface for gas exchange.
Bronchi
Bronchioles
Alveoli
When we breathe in, we lift our ribs and diaphagm muscle is _______________that causes chest cavity to become large and air enters into lungs.
Flattened
raised up
