help me understand the basics of biochemistry

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I am in 9th grade and i am really struggling in biology. we have an upcoming test and i want to be ready for it but i literally know nothing. i need to know everything about ATP, cellular respiration, macromolecules, things like that. For a review, the teacher makes us read definitions of the vocabulary words and it doesnt help because she wont tell us what they mean. everyone else seems to get it except for me. please help.

Sep 3rd, 2015

Thank you for the opportunity to help you with your question!

 Abbreviation for adenosine triphosphate, empirical formula: C10H16N5O13P3

ATP is an organic compound composed of adenosine (an adenine ring and a ribose sugar) and three phosphate groups, hence, the name.

Cellular respiration is the process of oxidizing food molecules, like glucose, to carbon dioxide and water. The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the cell. The process occurs in two phases: glycolysis, the breakdown of glucose to pyruvic acid.

A macromolecule is a very large molecule commonly created by polymerization of smaller subunits (monomers). They are typically composed of thousands or more atoms.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 3rd, 2015

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