This organ is always found at the core of all animal cells and plant cells?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Using the periodic table, determine which material is most likely a good conductor

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an