CHROMOPLAST Antonyms

• the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism

• an organelle containing enzymes responsible for producing energy

• a part of the cell containing DNA and RNA and responsible for growth and reproduction

• the positively charged dense center of an atom

• a small group of indispensable persons or things

• (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail

• any histologically identifiable mass of neural cell bodies in the brain or spinal cord

• the central structure of the lens that is surrounded by the cortex

• an organelle in the cytoplasm of a living cell; they attach to mRNA and move down it one codon at a time and then stop until tRNA brings the required amino acid; when it reaches a stop codon it falls apart and releases the completed protein molecule for use by the cell

• a tiny cavity filled with fluid in the cytoplasm of a cell

• a rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells; maintains the shape of the cell and serves as a protective barrier