What are the major structures of the cell and what do they do?

Answer 1

Typical animal cells: * cell membrane - selectively permeable to control what substances enter and leave the cell * nucleus - controls the cells' activities and houses the DNA that is necessary for cell replication * cytoplasm - where the chemical reactions take place in a cell * mitochondria - sites of aerobic respiration, located in the cytoplasm * ribosomes - sites of protein manufacture, located in the cytoplasm as well. typical plant cell (have all the above, plus): * Chloroplasts - contain the green pigment chlorophyll, necessary to trap light for photosynthesis * Permanent large vacuole - contains cell sap to help support the cell * Cell wall - surrounds the cell the keep it rigid.

Answer 2

1. cell membrane--a protective covering which gives shape to cell and protect the cell from external shocks and regulate the inflow and outflow of material
2. mitochondrion--it is present in cytoplasm. it helps in aerobic respiration for energy production. it is power house of cell
3. cytoplasm--present b/w cell membrane and nuclear membrane , containing celluar organelles as well as helps in anaerobic respiration
4. golgi apparatus--helps in production and storage of secretions
5. endoplasmic reticulum HELPS IN TRANSMISSION OF NERVE IMPULSES,METABOLIM,CIRCULATION OF MATERIAL ETC
6. ribosomes-- present on E.R helps in protein synthesis
7. centrosome-- helps in cell division in animals only
8. lysosome--it contains enzymes , any foreign object that enters into cell is engulfed and digested by them, they are also called sucide bags as they are involved in self eating
9. nucleus--controls all the activities of cell

Answer 3

cell membrane, large vacuole, small vacuoles, cytoplasm, nucleus

Answer 4

the cell and orgins mixed up in bilogy