The sewing needle should float in the water if placed on a horizontal angle if I remember properly.
I hope this helps in some way.
Structures that are common to all cell types:
* Plasma membrane
* Cytoplasm
* DNA
* Ribosomes
Functions:
* Plasma membrane provides protection to cell
* Cytoplasm holds components of cell and protects from damage
* DNA stores information for making proteins
* Ribosomes decode and form peptide bonds
Sweating because sweating releases excess heat from the body.
