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Life Science

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7 An observation that deals with characteristics that cannot be expressed in numbers
9 The diffusion of water moleclues through a selectively permemable membrane
10 The process of grouping things based on their similarities
11 The stage of a cell cycle that takes place beforecell division occurs
12 The process that occurs in the formation of sex cells by which the number of chromosomes is reduced by half
13 An organism whose cells contain nuclei
15 The process of forecasting what will happen based on past expirence or evidence
16 The process by which cells break down molelcues to release energy without using oxygen
17 An organism that cannot make its own food
18 A change in gene or chromosome
19 The process of making an inference, an interpretation based on observations and prior knowledge
20 made of a single cell
1 A small,round cell structure containing chemicals that break down large food particles into smaller ones
2 A change in an organisms surroundings that causes the organism to react
3 A small opening on a leaf through which oxygen and carbon dioxide can move
4 A chart or
5 The passing of traits from parents to offsprings
6 An organism's genectic make-up, or allele combinations
7 An observation that deals with a number or amount
8 The different forms of a gene
14 A person who has one recessive allele for a trait, but does not have the trait
21 A protein that speeds up chemical reactions in a living thing
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