PORTAGE BIOCHEMISTRY MODULE 1 (LATEST 2025/2026 UPDATE), ACTUAL EXAM/TEST
QUESTIONS AND 100% VERIFIED ANSWERS| A+ GRADE(100%Guarantee Pass)
What are three ways that biochemists study biological organisms? - (answer)Biochemists study 1) the
relationship between structure and function of biomolecules, 2) chemical reactions of organisms
(metabolism), and 3) communication within and among organisms.
What is the definition of biochemistry? - (answer)Often referred to as the chemistry of life, biochemistry
asks how the remarkable properties of organisms relate to their molecules.
What is another name for firefly? - (answer)lightning bug
Is Li an element common in biological organisms? - (answer)No. (See Figure 1.3 for the common
elements).
What is known as the "medium of life"? - (answer)Water
What is the bond angle associated with trigonal pyramidal shape? - (answer)107.5 degrees
Are transition metals commonly found in biological organisms? - (answer)Yes. They are trace elements
in organisms. (See Figure 1.3 for examples.)
True or false: Water can make up 85% (by mass) of a living organism - (answer)True
True or false: Large elements tend to make the strongest covalent bonds. - (answer)False. Smaller
elements tend to make the strongest bonds due to significant overlap.
Name three bulk elements. Name three trace elements. - (answer)Bulk elements (three of these): H, C,
N, O, Na, P, S, Cl, K, and Ca
Trace elements: Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Mo, I, and W.
The following statement is incorrect. Rewrite the statement to be correct.
, PORTAGE BIOCHEMISTRY MODULE 1 (LATEST 2025/2026 UPDATE), ACTUAL EXAM/TEST
QUESTIONS AND 100% VERIFIED ANSWERS| A+ GRADE(100%Guarantee Pass)
Statement: Organic chemistry is the study of metal compounds, while inorganic chemistry is the study of
carbon compounds. - (answer)Organic chemistry is the study of carbon-based compounds, while
inorganic chemistry is the study of all other compounds, including metals, minerals, and other non-
organic compounds.
Is H2O an organic molecule? How about CO2? C100H202? - (answer)Water is not organic; it does not
contain carbon. Both CO2 and C100H202 are organic compounds.
The next row of Table 1 would be the 6-carbon alkane, hexane. Write out its chemical formula and
condensed formula. - (answer)chemical formula: C6H14
condensed formula: CH3CH2CH2CH2CH2CH3
On your own paper, draw the Kekule structures and line-bond formulas for both butane and hexane. -
(answer)see drawings
How are the aldehyde and ketone functional groups similar? Different? - (answer)Aldehdyes and
ketones both have a carbon double bond oxygen arrangement (C=O) in their structure. They differ in
that the other two bonds that the carbon forms are different. A ketone has both bonds connected to
other carbons. An aldehyde has one bond to hydrogen and the second bond to either another hydrogen
or carbon.
What functional groups are found in glycine? - (answer)Carboxylic acid and amine
Support or Refute this statement. The compound shown below, retinal, contains both alkene and ketone
functional groups. - (answer)Refute. While retinal does indeed contain alkenes, it does not have a
ketone. Carbon-carbon double bonds characterize the functional group known as alkenes. Several
double bonds are present in the retinal, including one in the ring on the left and along the long carbon
chain.
On the other hand, a ketone is not present in retinal. A ketone is a C=O present with the C attached to
two other carbon atoms. This group is not present in the compound, but an aldehyde is present.
Aldehydes contain a C=O bond at the end of the carbon chain, which is present. Since the C=O is at the
end of the chain, the C atom has an H bonded to it on one side and a C atom on the other.
QUESTIONS AND 100% VERIFIED ANSWERS| A+ GRADE(100%Guarantee Pass)
What are three ways that biochemists study biological organisms? - (answer)Biochemists study 1) the
relationship between structure and function of biomolecules, 2) chemical reactions of organisms
(metabolism), and 3) communication within and among organisms.
What is the definition of biochemistry? - (answer)Often referred to as the chemistry of life, biochemistry
asks how the remarkable properties of organisms relate to their molecules.
What is another name for firefly? - (answer)lightning bug
Is Li an element common in biological organisms? - (answer)No. (See Figure 1.3 for the common
elements).
What is known as the "medium of life"? - (answer)Water
What is the bond angle associated with trigonal pyramidal shape? - (answer)107.5 degrees
Are transition metals commonly found in biological organisms? - (answer)Yes. They are trace elements
in organisms. (See Figure 1.3 for examples.)
True or false: Water can make up 85% (by mass) of a living organism - (answer)True
True or false: Large elements tend to make the strongest covalent bonds. - (answer)False. Smaller
elements tend to make the strongest bonds due to significant overlap.
Name three bulk elements. Name three trace elements. - (answer)Bulk elements (three of these): H, C,
N, O, Na, P, S, Cl, K, and Ca
Trace elements: Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Mo, I, and W.
The following statement is incorrect. Rewrite the statement to be correct.
, PORTAGE BIOCHEMISTRY MODULE 1 (LATEST 2025/2026 UPDATE), ACTUAL EXAM/TEST
QUESTIONS AND 100% VERIFIED ANSWERS| A+ GRADE(100%Guarantee Pass)
Statement: Organic chemistry is the study of metal compounds, while inorganic chemistry is the study of
carbon compounds. - (answer)Organic chemistry is the study of carbon-based compounds, while
inorganic chemistry is the study of all other compounds, including metals, minerals, and other non-
organic compounds.
Is H2O an organic molecule? How about CO2? C100H202? - (answer)Water is not organic; it does not
contain carbon. Both CO2 and C100H202 are organic compounds.
The next row of Table 1 would be the 6-carbon alkane, hexane. Write out its chemical formula and
condensed formula. - (answer)chemical formula: C6H14
condensed formula: CH3CH2CH2CH2CH2CH3
On your own paper, draw the Kekule structures and line-bond formulas for both butane and hexane. -
(answer)see drawings
How are the aldehyde and ketone functional groups similar? Different? - (answer)Aldehdyes and
ketones both have a carbon double bond oxygen arrangement (C=O) in their structure. They differ in
that the other two bonds that the carbon forms are different. A ketone has both bonds connected to
other carbons. An aldehyde has one bond to hydrogen and the second bond to either another hydrogen
or carbon.
What functional groups are found in glycine? - (answer)Carboxylic acid and amine
Support or Refute this statement. The compound shown below, retinal, contains both alkene and ketone
functional groups. - (answer)Refute. While retinal does indeed contain alkenes, it does not have a
ketone. Carbon-carbon double bonds characterize the functional group known as alkenes. Several
double bonds are present in the retinal, including one in the ring on the left and along the long carbon
chain.
On the other hand, a ketone is not present in retinal. A ketone is a C=O present with the C attached to
two other carbon atoms. This group is not present in the compound, but an aldehyde is present.
Aldehydes contain a C=O bond at the end of the carbon chain, which is present. Since the C=O is at the
end of the chain, the C atom has an H bonded to it on one side and a C atom on the other.
