NAS 2 Challenge TCC Exam Questions
And Answers
/. 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 protein channels
/.osmosis - Answer-Diffusion of water through a selectively permeable membrane
/.active transport - Answer-the movement of ions or molecules across a cell membrane
into a region of higher concentration, assisted by enzymes and requiring energy.
/.endocytosis - Answer-the taking in of matter by a living cell by invagination of its
membrane to form a vacuole.
And Answers
/. 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 protein channels
/.osmosis - Answer-Diffusion of water through a selectively permeable membrane
/.active transport - Answer-the movement of ions or molecules across a cell membrane
into a region of higher concentration, assisted by enzymes and requiring energy.
/.endocytosis - Answer-the taking in of matter by a living cell by invagination of its
membrane to form a vacuole.
