Multiple Choice
In the context of prokaryotic cell architecture, which organelle is absent in Escherichia coli?
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1. Overview of Cell Biology
Prokaryotic Cell Architecture
Multiple Choice
In the context of prokaryotic cell architecture, what is the approximate mass of a single typical bacterial cell (e.g., Escherichia coli)?
A
About g
B
About g
C
About g
D
About g
Verified step by step guidance1
Understand that the problem asks for the approximate mass of a single typical bacterial cell, such as Escherichia coli, which is a common model organism in prokaryotic cell biology.
Recall that bacterial cells are very small, typically on the order of a few micrometers in length, and their mass is correspondingly very small compared to macroscopic objects.
Recognize that the mass of a single bacterial cell is usually expressed in grams, but because the value is extremely small, it is best represented using scientific notation with a negative exponent.
Use known biological data or literature values which estimate the mass of a typical E. coli cell to be approximately 1 picogram (pg), where 1 pg = 1 \(\times\) 10^{-12} grams.
Conclude that the approximate mass of a single typical bacterial cell is about \(1 \times 10^{-12}\) grams, which matches the correct answer choice.
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