CHEM 210 BIOCHEMISTRY MODULE 5 ACTUAL
EXAM 2026 QUESTIONS WITH SOLUTIONS
GRADED A+
◉ 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
◉ Why is the strong bond good for living organisms? Answer: The
bond that forms requires significant energy to break it. This means
the bonds can withstand mechanical and thermal pressures through
the growth of hair/skin for protection.
EXAM 2026 QUESTIONS WITH SOLUTIONS
GRADED A+
◉ 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
◉ Why is the strong bond good for living organisms? Answer: The
bond that forms requires significant energy to break it. This means
the bonds can withstand mechanical and thermal pressures through
the growth of hair/skin for protection.
