The buildup of lactic acid in muscle cells is caused by

There's not enough oxygen in the muscles to break down glucose and glycogen

Explanation:

Lactic acid buildup occurs when there's not enough oxygen in the muscles to break down glucose and glycogen. This is called anaerobic metabolism.

learn more here:

https://www.sciencedirect.com/topics/medicine-and-dentistry/anaerobic-metabolism

Hope this helps,

H.M.

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;