QQuestionBiology
QuestionBiology
About $\frac{2}{3}$ of the mass of this cell is:
A. air
B. ribosomes
C. proteins
D. water
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Answer
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Step 1:I'll solve this problem step by step, following the precise LaTeX formatting guidelines:
Step 2:: Understand the Problem
The question asks about the composition of a cell, specifically which component comprises approximately $$\frac{2}{3}$$ of the cell's mass.
Step 3:: Analyze the Cellular Composition
In typical cells, the major components by mass are: - Water - Proteins - Ribosomes - Lipids - Nucleic acids - Other molecules
Step 4:: Identify the Correct Proportion
The key information is that $$\frac{2}{3}$$ of the cell's mass is being referenced.
Step 5:: Evaluate the Options
Proteins - Significant component, but not $$\frac{2}{3}
A. Air - Cells do not contain significant amounts of air B. C. D. Water - Matches the proportion described
Step 6:: Confirm the Scientific Fact
Water typically comprises about $$\frac{2}{3}$$ to $$\frac{3}{4}$$ of a cell's total mass.
Final Answer
Water
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