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Biology study guide
Study questions and answers
21
Biology
12th Grade
01/31/2011

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Term
Diffusion
Definition
Random movement of molecules from one place to another
Term
What is the cytoskelton
Definition
Internal structure
Term
Start small and work your way up
Definition
Atoms, molecules, organelles, cells tissues, organ, organisms, population, communities, ecosystem, & biosphere
Term
Three Domains of life
Definition
Bacteria, archaea,& Eukarya
Term
bacteria
Definition
One of the domains of life in the prokaryotes
Term
Archaea
Definition
one of the domains of life in the prokaryotes
Term
Eukarya
Definition
Organisms made up of eukaryoticcells which include all the protosts, plants, fungi and animals
Term
Protista
Definition
garbage can of organisms
Term
Lysosomes
Definition
Digestive sac,contains enzymes that break down molecules
Term
SER
Definition
Does not have ribosomes so it does not manufacture proteins
Term
RER
Definition
Has ribosomes, modifies protein polepeptide chains
Term
Function of ribosomes
Definition
Protein Synthesis
Term
What does Ph stand for
Definition
Parts Hydrogen
Term
Mitochondria
Definition
Powerhouse of the cell
Term
Function of the nucleous
Definition
Genetics/DNA
Term
Building blocks of nucleic acid
Definition
Nucleotides
Term
Elements that make up 96% of an organism are?
Definition
Carbon, Hydrogen, Oxygen, Nitrogen
Term
How do the 2 prokaryotes differ from eukaryotes?
Definition
Single celled, multicelled
Term
The HOW TO of science follows this pattern
Definition
Observation, question, hypothesis,test prediction experiment, & conclusion
Term
Describe control group
Definition
All conditions remain the same
Term
Describe experimental group
Definition
Has the variable, one variable is changed to test for effect
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