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NAS 2 Challenge Exam TCC – Q’s & A’s
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NAS 2 Challenge Exam TCC – Q’s & A’s
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NAS 2 Challenge Exam TCC – Q’s & A’sNucleus ✔️Ans - brain of the cell, directs cell activity and contains
chromosomes made of DNA
Endoplasmic Reticulum ✔️Ans - "intracellular highway", transports items
around the cell, creates lipids of fat
Lysosome ✔️Ans - An organelle containing digestive enzymes
Cytoplasm ✔️Ans - A jellylike fluid inside the cell in which the organelles
are suspended
golgi apparatus ✔️Ans - A system of membranes that modifies and
packages proteins for export by the cell
ribosomes ✔️Ans - site of protein synthesis
mitochondria ✔️Ans - Powerhouse of the cell, organelle that is the site of
ATP (energy) production
cell membrane function ✔️Ans - 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 ✔️Ans - difference in the concentration of a
substance from one location to another
simple diffusion ✔️Ans - hydrogen bonds form between water molecules
and solutes
facilitated diffusion ✔️Ans - Movement of specific molecules across cell
membranes through protein channels
osmosis ✔️Ans - Diffusion of water through a selectively permeable
membrane
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