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Question

Cheek cells do not have ______.


A

cell membrane

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B

nucleus

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C

golgi apparatus

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D

plastids

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Solution

The correct option is D

plastids


The correct option is D.

Explanations for correct option:

  1. The basal mucosa cells made of squamous epithelial cells are frequently referred to as cheek cells.
  2. In human cheek cells, structures such as the nucleus, cell membrane, and cytoplasm are easily visible.
  3. Because plastid is an organelle of plant cells, cheek cells do not contain it.
  4. It is a membrane-bound organelle that performs crucial tasks like the production and storage of significant chemical substances.

Explanations for incorrect options:

Option A:

  1. The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment.
  2. The cell membrane is made up of a semipermeable lipid bilayer.
  3. The cell membrane controls the passage of materials into and out of the cell.

Option B:

  1. In genomics, a nucleus is a membrane-enclosed organelle within a cell that holds the chromosomes.
  2. The nuclear membrane's array of holes, or pores, allows for the selective transit of particular molecules (such as proteins and nucleic acids) into and out of the nucleus.

Option C:

  1. The Golgi apparatus is a membrane-bound organelle of eukaryotic cells (cells with clearly identifiable nuclei) composed of a series of flattened, stacked pouches called cisternae.
  2. The Golgi apparatus transports modifies and packages proteins and lipids into vesicles for delivery to specific destinations.

Final answer: Cheek cells do not have plastids.


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