Prepare yourself for the basic biological principles of the Keystone Exam.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the seven characteristics that all life shares? | Made of cells
Maintain homeostasis
Maintain metabolism
Reproduce
Heredity
Respond to stimuli
Grow and develop
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| The ability of an organism to seek and maintain a condition of equilibrium or stability within its internal environment when dealing with external changes is called? | Homeostasis
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| The process involving a set of chemical reactions that modifies a molecule into another for storage, or for immediate energy use is called? | Metabolism
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| What are four common characteristics of prokaryotes? | Lack organelles
Contain ribosomes
Lack a nucleus
Singled celled
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| What are four common characteristics of eukaryotes? | Contain organelles
Contains a nucleus
Single or multi-cellular
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| If an organism is not prokaryotic then it must be, what type of organism? | Eukaryotic
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| If an organism is not eukaryotic then it must be, what type of organism? | Prokaryotic
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| What are the six levels of hierarchy in organisms? | organelles * cells * tissues * organs * organ systems * multi-cellular organisms
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| What is the primary function of the nucleus? | Contains the DNA and controls the cell's activities
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| What is the primary function of the nucleolus? | Site of ribosome synthesis (production)found in the nucleus
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| What is the primary function of the mitochondria? | breaks down carbohydrates to produce ATP
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| What is the primary function of the rough endoplasmic reticulum? | transports proteins ans other substances within the cell
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| What is the primary function of the smooth endoplasmic reticulum? | creates lipids
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| What is the primary function of the ribosomes? | protein synthesis
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| What is the primary function of the chloroplast? | synthesis carbohydrates using light energy
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| What is the primary function of the Golgi apparatus? | Protein packaging
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| What is the primary function of the cytoplasm? | Supports and protects organelles
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| What is the primary function of the centrioles? | Paired cylindrical organelles utilized in cell division
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| What is the primary function of the cytoskeleton/microtubules? | Supports cell, provides shape, and used in cell movement
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| What is the primary function of the lysosome? | Breaks down food molecules, and old organelles
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| What is the primary function of the vacuoles? | Storage, digestion and waste removal
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| What is the primary function of the contractile vacuole? | pumps water out of cell
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| What is the primary function of the vesicle? | Moves proteins, lipids, and carbohydrates through the cell
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| What is the primary function of the cell membrane? | Protects contents of the cell, controls what enters and leaves the cell
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| What is the primary function of the cell wall? | Protects the contents of the cell and prevents cells from bursting
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| What term is applied to a proposed explanation for a phenomenon? | hypothesis
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| What is the term applied to an educated guess in science? | hypothesis
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| What do scientists use to guide themselves through an experimental process? | hypothesis
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| What term is used to describe a conclusion drawn from scientific observations? | Inference
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| What term is used to describe a summarizing statement of observed experimental facts that have been tested many times and is generally accepted to be true? | law
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| What term is used to describe a hypothesis or group of related hypotheses, which have been confirmed through repeated experimental tests? | Theory
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| What term is used to describe a basic truth, law or assumption? | Principle
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| What term is used to describe something demonstrated to exist or known to have existed? | Fact
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| What term is used to describe an inference or a judgement that is acquired from or based on an observation? | observation
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