1. The lowest level of organization is the _______.   tissue   organ   organism   cell   Hint Half-n-half Clue   2. The network of convoluted tubules is called the _______.   golgi apparatus   mitochondrion   microtubule   endoplasmic reticulum   Half-n-half Clue   3. A group of cells performing a specific function constitute a tissue.   True   False   4. The reproduction of the cell is controlled by the _______.   centrosome   nucleus   mitochondrion   endoplasmic reticulum   Half-n-half Clue   5. The green color of leaves is due to the presence of the _______ pigment.   xanthophyll   anthocyanin   carotene   chlorophyll   Half-n-half Clue   6. _______ are known as the 'power-houses of the cell'.   Fat droplets   Mitochondria   Secretory granules   Ribosomes   Half-n-half Clue   7. The cell membrane is also known as the _______ membrane.   pleural   placental   parietal   plasma   Half-n-half Clue