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biological science

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Across
2.study of genes
4.compounds composed of carbon,hydrogen,oxygen,nitrogen and sometimes sulfur
5.the basic functioning of living things
6.two of the same alleles
9.alternative versions of a gene
11.describes how gene interactions can affect phenotypes
13.the chances/percentages that something will occur
15.packets of light energy that move in waves
16.compounds composed of carbon
19.traits that are expressed
20.the main components of cell membrane
22.the substance between the cell memebrane and the nucleus.
23.first discovered cells in cork
24.it is needed to cook food,heat homes, run cars, and other machines
27.organism that can use energy in sunlight,carbon dioxide and water to make food
28.usually accompanied by cytokinesis
29.it is one of the most abundant element in the human body.
30.most compounds that contain carbon
Down
1.small building-block molecules
3.a carbon-fixing pathway in photosynthesis
7.austrian monk
8.most abundant of all compounds in cells
10.compounds of mostly carbon,hydrogen, and oxygen
12.do not contain carbon
14.most common and important photosynthetic pigment in plants and algae
17.biological study of the structure and functions of cell as individual unit
18.also known as adenosine triphosphate
21.also called the citric-acid cycle
25.study of living thins
26.a type of cell division that occur only in reproductive cell

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