NAS 2 Challenge Exam TCC Questions and Verified Solutions

NAS 2 Challenge Exam TCC Questions and Verified Solutions Nucleus - Answer -brain of the cell, directs cell activity and contains chromosomes made of DNA Endoplasmic Reticulum - Answer -"intracellular highway", transports items around the cell, creates lipids of fat Lysosome - Answer -An organelle containing digestive enzymes Cytoplasm - Answer -A jellylike fluid inside the cell in which the organelles are suspended golgi apparatus - Answer -A system of membranes that modifies and packages proteins for export by the cell ribosomes - Answer -site of protein synthesis mitochondria - Answer -Powerhouse of the cell, organelle that is the site of ATP (energy) production cell membrane function - Answer -1) keep toxic substances out of cell 2) has receptors that allow molecules to pass between organelles 3) separate vital/incompatible metabolic processes in organelles concentration gradient - Answer -difference in the concentration of a substance from one location to another simple diffusion - Answer -hydrogen bonds form between water molecules and solutes facilitated diffusion - Answer -Movement of specific molecules across cell membranes through prote