CHEM 210 BIOCHEMISTRY MODULE 1 TO 8

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CHEM 210 BIOCHEMISTRY MODULE 1 TO 8

EXAMS' & FINAL EXAM (2025 / 2026) PORTAGE

LEARNING QUESTIONS AND VERIFIED

ANSWERS, 100% GUARANTEE PAS

CHEM 210 Biochemistry Module 1

• What are three ways that biochemists study biological

organisms?

- THE CORRECT ANSWER is: 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?

- THE CORRECT ANSWER is: 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?

- THE CORRECT ANSWER is: lightning bug

• Is Li an element common in biological organisms?

- THE CORRECT ANSWER is: No. See Figure 1.3 for the

common elements.

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• What is known as the "medium of life"?

- THE CORRECT ANSWER is: Water

• What is the bond angle associated with trigonal pyramidal

shape?

- THE CORRECT ANSWER is: 107.5 degrees

• Are transition metals commonly found in biological

organisms?

- THE CORRECT ANSWER is: Yes. They are trace

elements in organisms. See Figure 1.3 for examples.

8. True or false: Water can make up 85% (by mass) of a living

organism.

- THE CORRECT ANSWER is: True. Some plants are

made up of 90% water by mass.

9. True or false: Large elements tend to make the strongest

covalent bonds.

- THE CORRECT ANSWE R is: False. Smaller elements

tend to make the strongest bonds due to significant overlap.

• Name three bulk elements. Name three trace elements.

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• THE CORRECT ANSWER is: Bulk elements: 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.

• Differentiate between inorganic chemistry and organic

chemistry.

- THE CORRECT ANSWER is: Organic chemistry is the

study of carbon-based compounds. Inorganic chemistry is the study of all other elements.

• Is H2O an organic molecule? How about CO2? C100H202?

- THE CORRECT ANSWER is: 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.

• THE CORRECT ANSWER is: chemical formula:

C6H14, Condensed formula: CH3CH2CH2CH2CH2CH3

• On your own paper, draw the Kekule structures and line-

bond formulas for both butane and hexane. When you have drawn the structures, enter a note in the answer box indicating you have done so (e.g., "I completed these drawings." Or "I drew the structures for butane and hexane.")

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- THE CORRECT ANSWER is: I drew the structures for

butane and hexane.

• How are the aldehyde and ketone functional groups similar?

Different?

- THE CORRECT ANSWER is: Aldehydes 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?

- THE CORRECT ANSWER is: Carboxylic acid and

amine

• Retinal is found in the retina and helps with the absorption

of light. What are two functional groups found in Retinal?

- THE CORRECT ANSWER is: alkene and aldehyde

• A cell wall is a combination of carbohydrates and proteins.

What level of organization would this indicate and why?