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Portage Biochemistry Module 1 Exam Questions and Complete Solutions Graded A+
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Portage Biochemistry Module 1 Exam Questions and Complete Solutions Graded A+
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Portage BiochemistryModule 1 Exam
Questions and Complete
Solutions Graded A+
Denning [Date] [Course title]
, Definition of biochemistry - Answer: chemistry of life; how properties of organisms relate to their
molecules
What are the 3 things biochemists study? - Answer: 1. The relationship between structure and function
of biomolecules
2. Chemical reactions of organisms (metabolism)
3. Communication within and among organisms
What are bulk elements? - Answer: Elements that are abundant in living organisms
What are trace elements? - Answer: Elements that are less abundant in organisms but still crucial for life
Name the bulk elements (10) - Answer: H, Na, K, Ca, C, N, O, P, S, Cl
Name the trace elements (13) - Answer: Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, W, Se, I
What's another word for a firefly? - Answer: Lightning bug
Explain the chemical reaction of lightning bugs - Answer: The chemical reaction is called
bioluminescence. Proteins regulate, produce, and degrade the light-emitting compound called luciferin.
Luciferin, when acted upon by a protein, glows as bugs move. This chemical reaction is regulated by the
protein (enzyme) called luciferase.
How many naturally occurring elements exist? How many are found in living organisms and what kind of
elements? - Answer: 90 naturally occurring elements, less than 30 elements are found in living
organisms.
Most of these 30 elements are smaller non-metals.
Why are smaller elements favored for living organisms? - Answer: They can form stable, covalent bonds
How are strong bonds formed? - Answer: Strong bonds form by significant overlap of atoms, such as
carbon and hydrogen, permitting them to share electrons
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