6. In a animal cell, this is the site of respiration
- Chloroplasts
- Mitochondria
- Ribosomes
7. Bonding involving shared pairs of electrons
- Metallic
- Covalent
- Ionic
8. The speed in a particular direction
- Velocity
- Acceleration
- Speed
9. A tissue which,in humans, secretes substances such as hormones
- Glandular
- Muscular
- Epithelial
