Question

The cell membrane, or plasma membrane, is made up of a lipid bilayer in which hydrophilic heads face outward and hydrophobic tails face inward.This arrangement within the cell membrane allows it to

Answer 1

This arrangement allows it to become partially permeable. It allows fat-soluble substances e.g vitamin D to pass directly through cell membrane and prevents water-soluble molecules e.g glucose, amino acids etc. from entering or leaving the cell except through transport proteins.

Answer 2

There are many criteria that are used to define living things. Living things reproduce, grow, and develop. They respond to stimuli, use materials and energy, and evolve and adapt over time to their environment. What is another criteria used to define living things?

Step-by-step explanation: