What would happen to a cell that lacked smooth endoplasmic reticulum?(1 point)
Responses
Its cell membrane would be impermeable.
Its cell membrane would be impermeable.
It would not be able to replicate DNA.
It would not be able to replicate DNA.
It would not be able to produce tRNA.
It would not be able to produce tRNA.
It would not be able to make lipids.
It would not be able to make lipids.
It would not be able to make lipids.
The correct answer is: It would not be able to make lipids.
Smooth endoplasmic reticulum (SER) is an organelle involved in various cellular functions, including the synthesis of lipids. If a cell lacks SER, it would not be able to produce lipids. Lipids are essential components of cell membranes and play important roles in energy storage, cell signaling, and structural support.
To arrive at this answer, we need to understand the functions of the smooth endoplasmic reticulum. It is responsible for synthesizing lipids, detoxifying drugs and toxins, and regulating calcium ion levels. By knowing these functions, we can deduce that a lack of SER would specifically impact lipid production.
Additionally, we can eliminate the other options by understanding their functions in relation to other organelles. The cell membrane is primarily regulated by proteins and lipids, not influenced directly by SER. DNA replication is mainly controlled by the nucleus and not the SER. Lastly, the production of transfer RNA (tRNA) occurs in the nucleus and cytoplasm, not in the SER.
Therefore, the correct answer is that a cell lacking smooth endoplasmic reticulum would not be able to make lipids.