PORTAGE LEARNING BIOCHEMISTRY
210 MODULE 1 EXAM - THE AMAZING
WORLD OF BIOCHEMISTRY LATEST
EDITION A+ GRADED ACCURATE
QUESTIONS AND ANSWERS 2025/2026
COMPLETE SOLUTIONS
What \are \three \ways \that \biochemists \study \biological \organisms? \- \ANS-1. \The \relationship \between \
structure \and \function \of \biomolecules.
2. \The \chemical \reactions \of \organisms \and \or \metabolism.
3. \Communication \with \and \among \organisms.
What \is \the \definition \of \biochemistry? \- \ANS-Biochemistry \is \referred \to \as \the \'chemistry \of \life' \as \it \
investigates \how \the \properties \of \organisms \relate \to \their \molecules.
What \elements \are \important \to \human \life? \- \ANS-Bulk \elements \and \trace \elements.
Bulk \elements \consists \of \non-metals \and \trace \elements \consist \of \transition \metals \and \metals. \
Trace \elements \are \important \in \small \amounts.
What \are \considered \bulk \elements? \- \ANS-C, \H, \N, \O, \P, \S, \Cl, \Na, \K, \Ca.
What \are \considered \trace \elements? \- \ANS-Mg, \V, \Cr, \Mn, \Fe, \Co, \Ni, \Cu, \Zn, \Mo, \W, \Se, \I.
, What \is \another \name \for \firefly? \- \ANS-Lightning \bug \or \glow \worm. \Fireflies \are \also \known \to \be \
beetles.
What \are \the \different \bond \shapes? \- \ANS-Linear, \Trigonal \planar, \Trigonal \pyramidal, \Tetrahedral, \
Bent.
Linear \- \ANS-180 \degrees, \sp \hybridization. \
A \straight-line \arrangement \of \atoms.
Trigonal \Planar \- \ANS-120 \degrees, \sp2 \hybridization. \
A \central \atom \with \three \bonded \groups \in \a \flat, \planar \structure.
Trigonal \Pyramidal \- \ANS-107.5 \degrees, \sp3 \hybridization.
A \trigonal \pyramidal \shape \occurs \when \a \central \atom \forms \three \bonds \and \has \one \lone \pair \of \
electrons.
Tetrahedral \- \ANS-109.5 \degrees, \sp3 \hybridization. \
A \central \atom \with \four \single \bonds, \forming \a \3D \tetrahedron.
Bent \- \ANS-104.5 \degrees, \sp3 \hybridization. \120 \degrees, \sp2 \hybridization. \
Water: \The \central \atom \has \four \electron \domains \(two \bonded \atoms \+ \two \lone \pairs). \The \
increased \lone \pair \repulsion \further \reduces \the \bond \angle \from \the \ideal \tetrahedral \(~109.5°) \to \
~104.5°.
210 MODULE 1 EXAM - THE AMAZING
WORLD OF BIOCHEMISTRY LATEST
EDITION A+ GRADED ACCURATE
QUESTIONS AND ANSWERS 2025/2026
COMPLETE SOLUTIONS
What \are \three \ways \that \biochemists \study \biological \organisms? \- \ANS-1. \The \relationship \between \
structure \and \function \of \biomolecules.
2. \The \chemical \reactions \of \organisms \and \or \metabolism.
3. \Communication \with \and \among \organisms.
What \is \the \definition \of \biochemistry? \- \ANS-Biochemistry \is \referred \to \as \the \'chemistry \of \life' \as \it \
investigates \how \the \properties \of \organisms \relate \to \their \molecules.
What \elements \are \important \to \human \life? \- \ANS-Bulk \elements \and \trace \elements.
Bulk \elements \consists \of \non-metals \and \trace \elements \consist \of \transition \metals \and \metals. \
Trace \elements \are \important \in \small \amounts.
What \are \considered \bulk \elements? \- \ANS-C, \H, \N, \O, \P, \S, \Cl, \Na, \K, \Ca.
What \are \considered \trace \elements? \- \ANS-Mg, \V, \Cr, \Mn, \Fe, \Co, \Ni, \Cu, \Zn, \Mo, \W, \Se, \I.
, What \is \another \name \for \firefly? \- \ANS-Lightning \bug \or \glow \worm. \Fireflies \are \also \known \to \be \
beetles.
What \are \the \different \bond \shapes? \- \ANS-Linear, \Trigonal \planar, \Trigonal \pyramidal, \Tetrahedral, \
Bent.
Linear \- \ANS-180 \degrees, \sp \hybridization. \
A \straight-line \arrangement \of \atoms.
Trigonal \Planar \- \ANS-120 \degrees, \sp2 \hybridization. \
A \central \atom \with \three \bonded \groups \in \a \flat, \planar \structure.
Trigonal \Pyramidal \- \ANS-107.5 \degrees, \sp3 \hybridization.
A \trigonal \pyramidal \shape \occurs \when \a \central \atom \forms \three \bonds \and \has \one \lone \pair \of \
electrons.
Tetrahedral \- \ANS-109.5 \degrees, \sp3 \hybridization. \
A \central \atom \with \four \single \bonds, \forming \a \3D \tetrahedron.
Bent \- \ANS-104.5 \degrees, \sp3 \hybridization. \120 \degrees, \sp2 \hybridization. \
Water: \The \central \atom \has \four \electron \domains \(two \bonded \atoms \+ \two \lone \pairs). \The \
increased \lone \pair \repulsion \further \reduces \the \bond \angle \from \the \ideal \tetrahedral \(~109.5°) \to \
~104.5°.
