Answer the following in a sentence 1.What does a breath mean? 2.What forms the floor of the chest cavity? 3.Why do mountaineers carry oxygen with them? 4.Why do we get muscle cramps after a heavy exercise? 5.Why are yeast used to make wine and beer? 6.Why do we feel hungry after a physical activity? 7.When we are in hilly places in winter season the air we breathe out looks like smoke. Give reason 8.What is difference between pores present in insects and leaves of a plant? 9.The amount of nitrogen gas remains same in inhaled and exhaled air.Justify 10.People suffering from anaemia have symptom of tiredness. Why?
Answers
Explanation:
1) =Very quickly, as of someone who is speaking (usually while very excited). She said it all in one breath, so I couldn't even catch what company her job interview is with. See also: breath, one.
2)=The diaphragm
The diaphragm is the large muscular sheet which forms the floor of the chest cavity.
3)=Due to low air pressure, mountaineers sometimes suffer from dizziness. It can also lead to hypoxia. ... Hence, to avoid such issues arising due to insufficient oxygen, mountaineers carry oxygen cylinders.)
4)=This anaerobic breakdown of glucose leads to the formation of lactic acid in muscles. The accumulation of lactic acid in muscles leads to muscle cramps. Hence During heavy exercise, we get cramps in the legs due to the accumulation of Lactic acid. So, the correct answer is 'Lactic acid'.
5)=Yeasts are the main fermentor and alcohol producer in the production of wine, beer and other alcohol drinks. ... It ferments the sugars, coming from different sources, e.g., grapes for wine, barley for beer, to alcohol and carbon dioxide. Both wild and cultivated strains are used.
6)=After a physical activity, we take deep breathes and inhale more oxygen. As a result, more oxygen is supplied to our cells and the process of breakdown of food speeds up. Due to this, more energy is released and we tend to feel hungry.
7)=When we are in hilly places in the winter season the air we breathe out looks like smoke. ... The amount of nitrogen gas remains the same in inhaled and exhaled air.
8)=Spiracles are the tiny pores present in the insects like cockroaches which help in gaseous exchange whereas stomata are the openings present on the surface of the leaves. ... Spiracles are present laterally i.e. on the sides of the body of the organism whereas the stomata are present on the surface of the leaves.
9)=The proportion of nitrogen gas in inhaled as well as exhaled air remains the same (78%) because nitrogen is neither used up nor produced in respiration.
10)=Haemoglobin is needed to carry oxygen and if you have too few or abnormal red blood cells, or not enough haemoglobin, there will be a decreased capacity of the blood to carry oxygen to the body's tissues. This results in symptoms such as fatigue, weakness, dizziness and shortness of breath, among others..