1. It has a small, dense and granular structure. It is spherical in shape and is single-walled.   Hint Hint       2. It is round in shape. It is contained in the nucleus of the cell.   First letter clue   3. It has numerous pores, making it semi-permeable. It is the covering of the nucleus of the cell.   First letter clue   4. It consists of an irregular network of double-walled tubular membrane. It has ribosomes attached to it.   First letter clue   5. It is a membranous sac budded off from the golgi apparatus. It contains several types of enzymes.   First letter clue   6. It has a vesicular structure. It is formed when the substances produced in the endoplasmic reticulum are further processed in the golgi apparatus.   First letter clue   7. It is chiefly composed of a dense fluid. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid).   First letter clue