Semipermeable cell membranes are made of phospholipids that form a bilayer. What major benefit does this arrangement of the memb
rane provide to the cell? a. The cell is able to easily change shape and size
b. Both surfaces of the membrane are nonpermeable
c. The cell has a greater level of structural support
d. Both surfaces of the membrane can interact with water and other molecules.
The correct answer is D) Both surfaces of the membrane can interact with water and other molecules.
Explanation:
Phospholipids provide barriers in cellular membranes to protect the cell, and they make barriers for the organelles within those cells.
Phospholipids work to provide pathways for various substances across membranes. Membrane proteins stud the phospholipid bilayer; these respond to cell signals or act as enzymes or transporting mechanisms for the cell membrane.
The phospholipid bilayer readily allows essential molecules such as water, oxygen and carbon dioxide to cross the membrane, but very large molecules cannot enter the cell in this way or may not be able to at all.
The correct answer is Batesian. Animals that advertise their poisonous or dangerous qualities use a defense is called Batesian mimicry. Batesian is basically a mimicry form that a harmless species evolved into some warning for a harmful one directly on the predators.
hydrogen couldn't form until the universe had cooled enough to allow their nuclei to capture electrons, about 380,000 years after the Big Bang, Within about 3 minutes after the Big Bang, conditions cooled enough for these protons and neutrons to form hydrogen nuclei.
