nln pax biology (Answered) Complete Solution

nln pax biology (Answered) Complete Solution Cell smallest living unit and the basic unit of function and structure for all living things. Nucleus contains genetic information or DNA, controls the activities of the cell. DNA - Deoxyribonucleic Acid - genetic information. Plasma or Cell Membrane Semipermeable membrane that separates the contents of the cell from the surrounding fluids (interstitial fluid). Interstitial Fluid contains substances such as aminoacids, sugars, fatty acids, hormones, neurotransmitters and salts. Selectively permeable or semi permeable membrane refers to the selective nature of the plasma membrane. It contains pores and channels that allow only particles of the right size or right chemical nature to pass through. Additionally plasma membrane contains receptors that bind with specific substances, thus allowing special entry or signals to the cell to perform a certain activity. Cytoplasm Fluid matrix found between the plasma membrane and the nucleus that act as scaffolding for the organelles. Organelles or "little organs" are specialized units in the cell that perform certain functions. Mitochondria are the locations for cellular respiration that is the conversion of food to energy at the cellular level, thus the mitochondria are the sites of energy production and most of its ATP. ATP adenosine triphosphate - chemical the cell uses to store and transfer energy within itself. Ribosome site of protein synthesis in the cell. Endoplasmatic Reticulum(ER) serves as means of transport within the cell and is made up of many channels. Rough ER named for the fact that it has ribosomes on its surface, serves to store and deliver proteins made by the attached ribosomes. Smooth ER Free of ribosomes, found in a variety of cells, performs varying functions in different cells, including the storage of enzymes and minerals and the folding of proteins, among other things. It is thought to be involved in the detoxification of chemicals and the metabolism of fats.