What are the functions of the following in breathing?
Ribs

What are the functions of the following in breathing?
Diaphragm

Given alongside is a diagrammatic sketch of a part in human lungs

(i) Name the parts numbered 1-4

(ii) What do the arrows 5 and 6 indicate?

Given below is an overall chemical reaction of a certain process:

C₆H₁₂O₆ → lactic acid + 2ATP + heat energy

(a) Name the process.

(b) Is this reaction applicable to animals or to plants or to both animals and plants?

(c) Name one tissue in which this reaction may occur.