Multiple Choice
Which type of cell in the human retina is primarily responsible for vision in low-light (dim) conditions?
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5. Cell Components
Introduction to Eukaryotic Organelles
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Which organelle provides protection to plant cells by acting as a barrier against harmful substances?
A
Chloroplast
B
Mitochondrion
C
Cell wall
D
Nucleus
Verified step by step guidance1
Step 1: Begin by identifying the function of each organelle listed in the problem. For example, the chloroplast is responsible for photosynthesis, converting light energy into chemical energy.
Step 2: Understand the role of the mitochondrion. It is the powerhouse of the cell, generating ATP through cellular respiration, but it does not act as a protective barrier.
Step 3: Examine the nucleus. The nucleus houses genetic material and controls cellular activities, but it does not provide external protection to the cell.
Step 4: Focus on the cell wall. The cell wall is a rigid structure found in plant cells that provides protection and acts as a barrier against harmful substances, making it the correct answer.
Step 5: Conclude that the cell wall is the organelle responsible for protecting plant cells by acting as a barrier, based on its structural and functional properties.
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