Chapter 4 Biology Of Cell

Question 0

4 key functions of plasma membrane

Answer 0

• physical barrier- protects cellular contents & supports cell structure.phospholipid bilayer separates substances in and out of cell
• selective permeability- entry & exit of ions, nutrients & waste molecules
• Electrochemical gradient- establishes & maintains an electrical charge
• communication- receptors recognize and respond to molecular signals

Question 1

Cytology

How are cells studied?

Answer 1

Study of cells

Examines under a microscope