BIO 201 Homework 3 | Questions and Answers

BIO 201 Homework 3 | Questions and Answers Prokaryote Cells contain a plasma membrane True Prokaryote cells contain internal membrane-bound organelles False prokaryote cells have a cell wall true prokaryote cells have ribosomes true Nucleus has: contains DNA, Contains nucleolus Plasma Membrane separates contents of cell from surroundings Cytosol Semifluid matrix, contains sugars, salts, amino acids Endomembrane System Uses vesicles to transport proteins, sorts proteins for secretion The function of the nucleus is store genetic information Ribosomes are the site of protein syntesis Instructions for protein synthesis and cell reproduction; contains genetic information Nucleus Intracellular compartment forms transport vesicles; participates in lipid synthesis and synthesis of membrane or secreted proteins Endoplasmic reticulum Packages proteins for export from cell; forms secretory vesicle Golgi apparatus Digest worn-out organelles and cell debris; digest material taken up by endocytosis Lysosomes "Power plants" of the cell; sites of oxidative metabolism Mitochondria Sites of photosynthesis Chloroplasts Regulates water levels in plant cells Vacuole Used in break down of fats and contains the enzyme catalase Peroxisome The best understanding of how mitochondria and chloroplasts arose is bacteria were engulfed and not digested. Lysosomes are membrane-bound vesicles that arise from Golgi apparatus