Cells have membranes that allow them to establish and maintain internal environments that are different from their external environments. The structure of the phospholipid bilayer influences its permeability.

Which statements accurately reflect the permeability of the cell membrane? Choose all that apply.

The hydrophilic part of the cell membrane is A, the phosphate head.
The lipid tails are hydrophobic and will only allow molecules which are small and polar to pass through.
Molecules that are large or charged must use a channel protein, such as D, to cross the cell membrane.
Molecules using membrane proteins, such as E, for transport require energy.
Charged molecules, such as K+ or Ca++ are unable to pass through the lipid bilayer because of their charge and must use a membrane protein to cross the cell membrane.
C, the lipid tails, are hydrophobic and repel water.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."