Cells

2. The ________ endoplasmic reticulum is involved in protein synthesis and modification.
5. The secretory __________ transport substances needed by the body for release outside the cell.
6. This organelle is absent in plant cells.
7. This pigment allows plant cells to capture light energy.
9. This organelle is essential for protein synthesis.
11. This organelle chemically modifies proteins made by the endoplasmic reticulum and packages them for secretion.
14. The _________ endoplasmic reticulum is involved in the synthesis of fats and steroids.
15. This part of the cell provides an aqueous medium for most cellular activities to take place.
16. This substance in the xylem helps to provide mechanical strength and prevents collapse of the vessel.

1. Contains chromatin, which is made up of proteins and deoxyribonucleic acid.
3. This organelle is the site of aerobic respiration, where nutrients are oxidised to release energy.
4. The cell wall is made up of ____________, thus protects the cell from injury.
8. This substance is found within the large central vacuole of a plant cell.
10. This pigment found in red blood cells binds to oxygen.
12. The cell surface membrane is a ___________ permeable membrane.
13. This is a membrane-bound organelle that store substances within a cell.