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Chapter 7

S 1&2 Scientists and Funtions

QuestionAnswer
Robert Hook Looked at cork with microscope
Matthias Schleiden Plants have cells
Theodor Schwann Animals have cells
Rudolph Virchow Cells created only from existing cells
Prokaryotes No nucleus
Eukaryotes Nucleus
Organelles Specialized structure that performs important cellular functions within a eukaryotic cell
Cytoplasm Part of cell outside nucleus
Nucleus Control center
Nuclear envelope Layer of two membranes that surrounds the nucleus
Chromatin The granular material you can see in nucleus
Chromosomes Distinct, threadlike structures that contain genetic info that is passed from one generation of cells to the next
Nucleolus A sm, dense region that most nuclei contain where the assembly of ribosomes begins
Ribosomes Small particles of RNA and protein found throughout the cytoplasm
Endoplasmic reticulum An internal membrane system contained in eukaryotic cells
Rough Endoplasmic reticulum ER with ribosomes
Smooth Endoplasmic reticulum ER without ribosomes ; synthesis of enzymes and drug detox
Golgi Apparatus Stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum
Lysosomes contains enzymes for breaking down
Vacuoles Saclike structures that store materials such as water, salts, proteins, and carbohydrates
Mitochondria powerhouse
Chloroplasts Organelles that capture the energy from sunlight and convert it into chemical energy in a photosynthesis
Cytoskeleton A network of protein filaments that help the cell to maintain its shape, also involved in movement, helps support cell
Microfilaments
Microtubules
Created by: rachelebrady
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