Qn5. The cellular structure that is directly responsible formaintaining cell shape as well as contributing to cell movement is                                                                          . (1 mark)
- Ribosomes
- Golgi apparatus
- Smooth endoplasmic reticulum
- Microfilaments and microtubules
Qn6. In bone, calcium phosphate and the extracellular matrixrich in glycosaminoglycans are secreted by                                                               (1 mark)
- Osteoblasts
- Chondrocytes
- Fibroblasts
- Osteoclasts
Qn11. Which of the following statements is INCORRECT (FALSE)in regard to bone tissue? (1 mark)
- Bone tissue may store and release calcium depending on themetabolic status of the animal
- Osteocytes compact and spongy bone are biologically viablecells
- Deposition of calcium salts into bone tissue is a function ofosteoblasts
- Mobilization of bone calcium is mediated by osteoblasts
