Movement of molecules across the cell membrane occurs by diffusion, active or passive transport.
<u>Explanation:</u>
Cell membrane are specifically penetrable, controlling which substances can go through, just as the amount of every substance can enter or exit at a given time. Specific permeability is fundamental to cells' capacity to get supplements, take out wastes, and keep up a steady inside condition unique in relation to that of the environment (homeostasis). Passive transport doesn't require the cell to consume any ATP and includes a substance diffusing down its concentration gradient across its membrane. In active transport, molecules cross the membrane using ATP.
Answer: S phase
Explanation: during this phase the cell replicates it's DNA.
The cell synthesis mRNA and proteins which lead to mitosis
Vacuoles provide temporary storage of food, enzymes, and waste products in a cell.
Answer:
This is True.
Explanation:
Biologists use the fluid mosaic model to describe membrane structure. The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.
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Plants adapted to the dehydrating land environment through the development of new physical structures and reproductive mechanisms.