Discuss structure and function of organelles of mature cell(20marks)​

There are five main types of cell organelles:

Nucleus, cytoplasm, chloroplasts, cell membrane and cell wall.

Function of nucleus: Stores information needed for the cell to work

Function of cytoplasm: All chemical reactions in the cell takes place here.

Function of chloroplasts: Absorbs light energy to be used in photosynthesis

Function of cell membrane: Controls what goes into and out of the cell

Function of cell wall: Gives cells their shape and prevents cells from bursting due to osmosis

*Animal cells do not have chloroplasts and cell walls.

Explanation:

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.