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Science-Chapter 17

What is the smallest unit that can perform all the processes necessary for life? Cell
Who was the scientist who first described cells? Robert Hooke
Who discover single-celled organisms including bacteria? Anton van Leeuwenhoek
Who concluded that all plant parts were made of cells? Matthias Schleiden
Who concluded that all animal tissue were made of cells? Theodor Schwann
Who concluded that all cells come from existing cells? Rudolf Virchow
What are the 3 parts of the Cell Theory? 1. All organisms are made of one or more cells 2.The cell is the basic unit of all living things 3.All cells come from existing cells
A cell's size is limited by the ratio between the cells what? The cell's volume and the cell's surface area
What is the protective layer that covers a cell's surface? Cell membrane
What is cytoplasm? Fluid from the cell and almost all of its content
What are structures that perform a specifc function in the cell? Organelles
What does DNA stand for? Deoxyribonucleic acid
What is a organelle that contains DNA and has a role in growth, metabolism, and reproduction? Nucleus
What parts do cells have in common? Cell membranes, organelles, cytoplasm, and DNA
What are prokaryotes? Single-celled organisms that do not have a nucleus or membrane-bound organelles
What is the most common prokaryotes? **hint hint smallest cell** Bacteria
What are ribosomes? Tiny, round organelles made of proteins and other materials
What does a eukaryotic cell have that a prokaryotic cell does not? A nucleus
What does multicellular mean? Many cells
Created by: 15ellioa