Homeostasis keeps the environment inside the cell always the same so that the cell doesn't have to keep making adaptations to match the ever-changing outside environment. <span />
A. Temperature, humidity, and pressure are basically the same all through an air mass.
B. Temperature at the border of an air mass is always higher than in the middle.
Explanation:
True
Lipids are composed of fatty acids which form the hydrobic tail and glycerol which forms the hydrophilic head; glycerol is a 3-Carbon alcohol which is water soluble, while the fatty acid tail is a long chain hydrocarbon (hydrogens attached to a carbon backone) with up to 36 carbons. Their polarity or arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties. Via diffusion, small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds.
Similarly via osmosis, the water passes through the membrane due to the difference in osmotic pressure on either side of the phospholipid bilayer, this means that the water moves from regions of high osmotic pressure/concentration to regions of low pressure/ concentration to a steady state.
Further explanation:
Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers. Carrier proteins and channel proteins are the two major classes of membrane transport proteins; these allow large molecules called solutes (including essential biomolecules) to cross the membrane.
Carrier proteins (also called carriers, permeases, or transporters) bind the specific solute to be transported and undergo a series of conformational (shape) changes to transfer the bound solute across the membrane. Others cross the membrane through the process of endocytosis, which utilizes membrane-bound organelles for transport.
Learn more about membrane components at brainly.com/question/1971706
Learn more about plasma membrane transport at brainly.com/question/11410881
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Answer:
A. Both plant leaf cells AND animal skin cells have a nucleus containing DNA.
B. Both plant leaf cells AND animal skin cells have a cell membrane.
C. Only a plant leaf cell has a chloroplast that undergoes photosynthesis.
D. Both plant leaf cells AND animal skin cells have mitochondria.
