CHEM 301 BIOCHEMISTRY EXAM PREP 2024/2025 | ATHABASCA UNIVERSITY MIDTERM QUESTIONS & DETAILED ANSWERS UNIT 1 Define "biochemistry." the study of the building blocks, or molecules, of life and how these interact in the processes that occur in living organisms. Name the major classes of biomolecules, and identify the atoms most commonly found in each class. - proteins (amino acids) - carbohydrates or polysaccharides (monosaccharides or simple sugars) - lipids (fatty acids) - nucleic acids (nucleotides). Define "metabolic pathway." linked series of chemical reactions occurring within a cellular processes List the 6 elements that make up 99% of living cells CHNO CP carbon, hydrogen, nitrogen, oxygen, calcium, and phosphorus. Identify some applications of biochemistry. medicine (causes and cures of diseases) nutrition (maintain health and wellness, nutritional deficiencies) agriculture (soil and fertilizers) What are the four elements most commonly found in biomolecules? carbon (C), oxygen (O), hydrogen (H) and nitrogen (N) Describe the organization of Eukaryotic Cells and Prokaryotic Cells How does the composition of the earth's crust and living cells differ?The earth's crust is mostly composed of Oxygen, Aluminum, Silicon, and Iron. Living cells are mostly composed of C, H N, O. Two elements found in the earth's crust, Si