Consider the following diagram of a cellular structure - VCE - SSCE Biology - Question 1 - 2012 - Paper 1
Question 1
Consider the following diagram of a cellular structure.
This structure is:
A. visible only using an electron microscope.
B. found only in eukaryotic organisms.
C. f... show full transcript
Worked Solution & Example Answer:Consider the following diagram of a cellular structure - VCE - SSCE Biology - Question 1 - 2012 - Paper 1
Step 1
A. visible only using an electron microscope.
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Answer
This statement is incorrect. While certain cellular structures, such as detailed components of a cell, may require an electron microscope for visibility, many cellular structures can be observed using optical microscopes, especially parts of cells visible under light.
Step 2
B. found only in eukaryotic organisms.
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Answer
This statement is correct. The structure depicted is likely to be a chromosome, which is a eukaryotic feature. Prokaryotic organisms, such as bacteria, have a different structure in terms of genetic material, typically existing in a circular form and not organized into chromosomes.
Step 3
C. found in all living organisms.
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This statement is incorrect. As noted earlier, the structure (chromosome) is specific to eukaryotic organisms and is not found in prokaryotic organisms, which utilize a different form for their genetic material.
Step 4
D. made up entirely of DNA.
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This statement is partially true but misleading. Chromosomes are composed of DNA tightly coiled around proteins called histones. Therefore, while DNA is a primary component, it is not accurate to say they are made up entirely of DNA.
