Site where ribosome’s are made The membrane surrounding the cell Provides support for the cell, has two “subparts” Name for the collection of DNA in the nucleus of eukaryotic cells Consist of hollow tubes which provide support for the cell Small hair-like structures used for movement or sensing things Composed of a phospholipids bilayer Longer whip-like structures used for movement Chromcihn Put a check in the appropriate column(s) to indicate whether the following organelles are found in plant cells,
The Correct Answer and Explanation is :
Let’s break down the components and their corresponding organelles in the context of plant cells. Below is a table of the organelles and their presence in plant cells, followed by a detailed explanation of each organelle and its function.
| Organelle | Found in Plant Cells | Explanation |
|---|---|---|
| Ribosomes | Yes | Ribosomes are the site of protein synthesis in cells. They are found in both prokaryotic and eukaryotic cells, including plant cells, and can either be free-floating or attached to the endoplasmic reticulum. |
| Cell Membrane | Yes | The cell membrane surrounds the cell and controls what enters and exits. It provides structural support, protection, and communication with other cells. It is a crucial component in plant cells as well. |
| Nucleus (DNA) | Yes | The nucleus contains the genetic material (DNA) in eukaryotic cells. In plant cells, the nucleus has two main components: the nuclear envelope and the nucleolus, where ribosomal RNA is synthesized. The chromatin inside the nucleus contains the DNA. |
| Cytoskeleton (Hollow Tubes) | Yes | The cytoskeleton in plant cells consists of microtubules and microfilaments. These hollow tubes provide structure and help in cell division and the movement of organelles. |
| Cilia | No | Cilia are short, hair-like structures used for movement and sensory purposes. While they are common in some animal cells, they are not typically found in plant cells. |
| Phospholipid Bilayer | Yes | The cell membrane is composed of a phospholipid bilayer, a key feature of all eukaryotic cells. This bilayer provides a semipermeable boundary to regulate substances entering and leaving the cell. |
| Flagella | No | Flagella are longer, whip-like structures used for movement. Some plant cells may have flagella during specific life stages (e.g., sperm cells in plants like ferns), but it is not a common feature in most plant cells. |
| Chromatin | Yes | Chromatin is the collection of DNA in the nucleus. In plant cells, chromatin exists in the form of thin threads of DNA and proteins that help in gene expression and regulation. |
Explanation:
- Ribosomes are found in all cells, including plant cells. They are responsible for translating messenger RNA (mRNA) into proteins.
- The cell membrane surrounds plant cells just like in all eukaryotic cells. It regulates the movement of materials and offers structural support.
- The nucleus, where chromatin (DNA) is housed, is central to plant cells. Chromatin in the nucleus condenses to form chromosomes during cell division.
- Cytoskeleton structures such as microtubules and microfilaments give the plant cell structural support, assist in intracellular transport, and are involved in cell division (mitosis).
- Cilia are rare in plant cells, as these structures are more commonly associated with animal cells, where they assist in movement and sensing environments.
- The phospholipid bilayer forms the structural foundation of the cell membrane, which is essential for protecting and organizing the cell.
- Flagella, found in some plant cells like sperm in ferns, provide movement but are not present in most plant cells.
- Chromatin exists in all eukaryotic cells, including plant cells, and is essential for storing and organizing genetic information.
This provides a comprehensive look at the organelles in plant cells and their roles!