Question

. A student sets up an experiment to study human respiration using lime water, test tube and a straw. Lime water is colourless in the absence of CO2and is milky in its presence. The student fills a freshly prepared lime water in a test tube and blows air through straw into the limewater. It was observed that the solution turns cloudy as shown.
1 point

Answer 1

Explanation:

carbon dioxide is exhaled during respiration

Answer 2

Answer:

Carbon dioxide

Explanation:

During respiration carbon dioxide exhale.

Respiration -

Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells).

Respiration process -

1) When you breathe, you are taking in oxygen with each inhale and releasing carbon dioxide with each exhale.

2) This gas exchange is important for respiration, but while breathing is a physical process, respiration can be thought of as more of a chemical process.

3) All organisms, from a single bacterial cell to a coral reef colony to a blue whale, undergo respiration.

4) Food molecules absorbed after digestion are taken in, broken down, and the energy freed in the process is used to power the organism's movements and physiological functioning.

FINAL ANSWER - carbon dioxide

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