What is the semantic component of this kanji?

I make bread using rice flour.

She carefully keeps her mother's hair after death.

His gray hair tells his age.

We have to calculate the expenses for this project.

He always goes on trips without a plan.

My career plan is to be promoted to a manager within five years.

I used a microscope for a biology experiment.

For the aforementioned reasons, I oppose the proposal.

An abnormality can be seen in the movement of this machine.