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Questions and Answers
What is the primary focus of biochemistry?
What is the primary focus of biochemistry?
- The study of ecological systems and their interactions.
- The exploration of the biochemical basis of life processes. (correct)
- The investigation of geological formations and their history.
- The analysis of astronomical bodies and their movements.
Which of the following best represents the estimated percentage of water in protoplasm?
Which of the following best represents the estimated percentage of water in protoplasm?
- 50% to 60%
- 30% to 50%
- 70% to 90% (correct)
- 20% to 40%
After the water content of a cell evaporates, what is the remaining mass called?
After the water content of a cell evaporates, what is the remaining mass called?
- Wet mass
- Dry weight (correct)
- Cellular residue
- Hydrated mass
Which set of elements is primarily involved in the synthesis of biomolecules?
Which set of elements is primarily involved in the synthesis of biomolecules?
What percentage of all biomolecules is composed of the fundamental types of biomolecules?
What percentage of all biomolecules is composed of the fundamental types of biomolecules?
Flashcards
What is biochemistry?
What is biochemistry?
The study of the chemical processes within living organisms.
What is protoplasm?
What is protoplasm?
A complex mixture of molecules found in living cells.
Which elements are the building blocks of biomolecules?
Which elements are the building blocks of biomolecules?
The elements carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur make up the majority of biomolecules. They are called biogenic elements.
What is 'dry weight' in a cell?
What is 'dry weight' in a cell?
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What are biomolecules?
What are biomolecules?
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Study Notes
Introduction to Biochemistry
- Biochemistry is a branch of biology that explains the biochemical basis of life
- It provides information about all processes in living organisms, from body structure to DNA for enzyme/protein synthesis
- It explains abnormal mechanisms linked to diseases, opening doors for medicine development
- Biochemistry helps investigate challenging biological problems like organ formation, cell growth, and memory mechanisms
Chemical Composition of Cells
- Living organisms are made of cells and tissues, which are composed of molecules (chemically bonded atoms)
- Cell structure and function depend on chemical composition
- Studying chemical composition is crucial for understanding cell functions and metabolism
Chemical Composition of Cells (Details)
- Living organisms are made of cells that contain protoplasm (living substance)
- Protoplasm's chemical composition is approximately 70-90% water
- Removal of water leaves a "dry weight", containing large organic molecules called biomolecules
- Biomolecules are compounds created by living organisms, primarily made from carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur
- Biomolecules constitute about 98% of the total biomolecules
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