Answer:
Cellulose
Explanation: The main functions of the cell wall are to provide structure, support, and protection for the cell. The cell wall in plants is composed mainly of cellulose and contains three layers in many plants. The three layers are the middle lamella, primary cell wall, and secondary cell wall.
(A) Protozoa and some low-level multicellular animals There are no organs responsible for excreting liquid waste. Such waste can penetrate the cell surface directly into the water outside of it. If paramecium does not contain vacuoles will cause it to lose the balance of body fluids The contractile vacuole compression rate depends on the osmotic pressure of the water in which the animal lives, i.e. the compression rate decreases. if the osmotic pressure of the water in which it resides increases But it will speed up if the osmotic pressure of water decreases.
(B) The water mixed with salt has a higher concentration than fresh water. So the water diffuses into the paramecium. Therefore, the contractile vacuole is less compressed to remove water from the cell than when in fresh water.
Answer:
Ectotherms are also called poikilotherms.These are animals whose temperature varies with that of the external temperature.
Explanation:
hope it helps. have a nice day ahead.
Answer:
B
Explanation:
More substances dissolve in water than in any other chemical. this is because of the polarity of its molecules. H²0 has a small positive electronic charge and the oxygen side has a small negative charge. the negative and positive charges help water dissociate ionic compounds into them.
Actually it depends because at my school if we get hints wrong we get deducted points, though at other schools it might be different. So it depends what your school does.
Hope this helps.
(If it doesn't, I am sooooooooooooooooooooooooooooooooooooooooooooooooo sorry.)
