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Cell Unit

Includes key terms, cell theory, organelles, processes, mitosis, & specializatio

QuestionAnswer
Which cell process requires the use of energy to get substances across the cell membrane? Active Transport
Food is broken down to release energy without the use of oxygen Fermentation (Anaerobic Respiration)
The process by which one cell divides into two cells. Cell Division
What is the term used to describe an organism made up of cells that contain a nucleus? Eukaryote (Eukaryotic Cells)
What are the "tiny organs" or structures found inside of cell called? Organelles
What is the term used to describe an organism made up of a cell without a nucleus? Prokaryote (Prokaryotic Cells)
The process by which cells use oxygen to produce energy from food. Cellular Respiration (Aerobic Respiration)
The process by which particles move through the cell membrane from an area of higher to lower concentration. Diffusion
What is the name of the special process used by eukaryotic cells to prepare the cell's nucleus for cell division. Mitosis
A special type of diffusion that only deals with water. Osmosis
Who/What contributed to the development of the cell theory? The discoveries made by many scientists (Hooke, van Leeuwenhoek, Schleiden, Schwann, Virchow) and the invention of the microscope.
What are the 3 statements of the cell theory? 1.) All living things are made up of cell. 2.) Cells are the basic units of structure and function in living things. 3.) All cells must come from pre-existing cells.
Which cell organelle allows certain substances to enter and exit the cell? Cell Membrane
Which cell organelle allows certain substances to enter and exit the nucleus? Nuclear Membrane
What is the single unit of a chromosome called? Gene
Which cell organelle is responsible for making proteins? Ribosomes
Which cell organelle stores food, water and waste for the cell? Vacuole
What is the name of the jelly-like substance found inside of the cell and contains all of the organelles? Cytoplasm
Which organelle is only found in plant cells and used light energy to make food? Chloroplast
Which organelle is only found in animals cells and contains digestive juices to break down food, dead/injured cells? Lysosomes
This orgnelles is described as the "powerhouse" of the cell and is the site for cellular respiration Mitochondria
Which organelle is the internal delivery system for the cell? ER
This cell structure contains the genetic code (DNA) for making proteins. Chromosomes
All of the activities that a cell performs is controlled by this cell organelle. Nucleus
This cell structure is found in plant cells and is used for support and protection Cell Wall
What are some characteristics unique to a plant cell? cell wall, chloroplast, rectangular in shape, has the ability to make its own food, large vacuole
What are some characteristics unique to an animal cell? circular in shape, few small vacuoles, cannot make its own food, lysosomes
How are diffusion and osmosis alike? Both do not require energy and deal with the movement of a substance from an area of high to low concentration.
When does a cell use active transport to get things in or out of a cell? Active transport is used when molecules are too large to fit and when moldecules go against the natural gradient by moving from an area of low to high concentration.
How are active transport and diffusion different? Active tranport requires energy and moves materials from low to high concentration. Diffusion does not require energy and moves materials from high to lower concentrations.
How do eukaryotic cells reproduce? 1.) Cell Grows- copies organelles and chromosomes 2.) Mitosis 3.) Cell splits into 2 cells
How does the "parent" cell compare to its' "daughter" cell? The "daughter" cell has an exact copy of the parents (same number of chromosomes)
What are a group of cells working together for a common function called? Tissues
Identify an example of an organ. Heart
A group of organ systems working together to complete a common function are called Multicellular Organism
Tissues working together for a common purpose are called Organ
Why is it benefical for cells to specialize? More efficient
What are the 3 benefits of being a multicellular organism? 1.) Large size 2.) Longer life span 3.) Cell Specialization
Name of the 5 levels of organization from the simplest to the most complex cell, tissue, organ, organ system, multicelluar organism
Created by: jmebuckley on 2010-10-30



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