PORTAGE BIOCHEMISTRY MODULE 1
EXAM QUESTIONS AND ANSWERS
LATEST EDITION (100% VERIFIED)
LATEST 2025
Definition of biochemistry - CORRECT ANSWER-chemistry of life; how
properties of organisms relate to their molecules
What are the 3 things biochemists study? - CORRECT 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? - CORRECT ANSWER-Elements that are abundant in
living organisms
What are trace elements? - CORRECT ANSWER-Elements that are less
abundant in organisms but still crucial for life
Name the bulk elements (10) - CORRECT ANSWER-H, Na, K, Ca, C, N, O, P, S,
Cl
, Name the trace elements (13) - CORRECT ANSWER-Mg, V, Cr, Mn, Fe, Co, Ni,
Cu, Zn, Mo, W, Se, I
What's another word for a firefly? - CORRECT ANSWER-Lightning bug
Explain the chemical reaction of lightning bugs - CORRECT 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? - CORRECT 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? - CORRECT ANSWER-
They can form stable, covalent bonds
How are strong bonds formed? - CORRECT 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? - CORRECT ANSWER-The
bond that forms requires significant energy to break it. This means the bonds can
EXAM QUESTIONS AND ANSWERS
LATEST EDITION (100% VERIFIED)
LATEST 2025
Definition of biochemistry - CORRECT ANSWER-chemistry of life; how
properties of organisms relate to their molecules
What are the 3 things biochemists study? - CORRECT 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? - CORRECT ANSWER-Elements that are abundant in
living organisms
What are trace elements? - CORRECT ANSWER-Elements that are less
abundant in organisms but still crucial for life
Name the bulk elements (10) - CORRECT ANSWER-H, Na, K, Ca, C, N, O, P, S,
Cl
, Name the trace elements (13) - CORRECT ANSWER-Mg, V, Cr, Mn, Fe, Co, Ni,
Cu, Zn, Mo, W, Se, I
What's another word for a firefly? - CORRECT ANSWER-Lightning bug
Explain the chemical reaction of lightning bugs - CORRECT 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? - CORRECT 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? - CORRECT ANSWER-
They can form stable, covalent bonds
How are strong bonds formed? - CORRECT 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? - CORRECT ANSWER-The
bond that forms requires significant energy to break it. This means the bonds can
