Biology: The Cell (Cell Parts And Functions)

The cell membrane is responsible for protecting the cell and controlling the movement of substances in and out of the cell. It acts as a barrier, allowing only certain molecules to pass through while keeping others out. This selective permeability helps maintain the internal environment of the cell and prevents harmful substances from entering. Additionally, the cell membrane plays a crucial role in cell communication and signaling.

The cytoplasm is a jelly-like substance that is found between the nucleus and the cell membrane. It contains many organelles, including ribosomes and chloroplasts. The cytoplasm is responsible for various cellular processes and provides support to the organelles within the cell. The cell wall is not part of the cytoplasm, as it is found outside the cell membrane. The nucleolus, on the other hand, is a structure found within the nucleus and is not part of the cytoplasm. Therefore, the correct answer is cytoplasm.

The correct answer is vacuole. A vacuole is a sac within the cytoplasm of a cell that is filled with fluid. In plants, there is usually one large vacuole that serves as a storage space for various substances such as food, water, and waste products. The vacuole helps maintain the shape and structure of the cell, as well as regulate the concentration of ions and molecules within the cell.

Lysosomes are small organelles that contain enzymes responsible for breaking down food particles and other waste materials within the cell. They act as the garbage disposal unit of the cell, breaking down and recycling cellular waste products. Lysosomes are involved in various cellular processes such as digestion, cell death, and the removal of cellular debris. They play a crucial role in maintaining the overall health and function of the cell.

Chloroplasts are the correct answer because they are the organelles where photosynthesis takes place. They contain chlorophyll, a pigment that captures energy from sunlight, and use this energy to convert carbon dioxide and water into glucose, a form of food for the plant.

The cell wall is a structure that gives the cell a rigid, box-like shape and is located outside of the cell membrane. In plants, the cell wall is made of cellulose. This structure provides support and protection to the cell, helping it maintain its shape and resist external pressures. The cell wall also allows for the exchange of substances between neighboring cells and helps in cell-to-cell communication.

The endoplasmic reticulum is a network of passageways within a cell that is responsible for carrying materials from one part of the cell to another. It plays a crucial role in the synthesis, folding, and transport of proteins, as well as the production and metabolism of lipids. The endoplasmic reticulum is connected to the nuclear envelope and extends throughout the cytoplasm, providing a pathway for molecules to move within the cell. Its structure and function make it an essential component of the cell's overall transport and communication system.

The nucleolus is the correct answer because it is the part of the nucleus where ribosomes are made. It is responsible for the production and assembly of ribosomal RNA (rRNA) and the assembly of ribosomal subunits. The nucleolus plays a crucial role in protein synthesis and is essential for the functioning of the cell.

Ribosomes are the correct answer because they are produced in the nucleolus, which is where proteins are made. Ribosomes are primarily made of RNA and are responsible for protein synthesis in the cell.

The nucleus directs all of the cell's activities, including reproduction, and contains nucleic acids. It is the control center of the cell and houses the genetic material, DNA, which provides instructions for the cell's functions and characteristics. The nucleus also regulates the synthesis of proteins and plays a crucial role in cell division.

Mitochondria are the correct answer because they are known as the power plants of cells. They are rod-shaped organelles that have a smooth outer membrane. Mitochondria are responsible for producing energy in the form of ATP through a process called cellular respiration. They are found in the cytoplasm of eukaryotic cells and contain their own DNA.

The given answer suggests that the type of cell being referred to is likely to be a prokaryote. Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles. They are typically found in bacteria and archaea. This answer implies that the cell being described does not have a nucleus and therefore does not belong to a plant or animal cell, which are eukaryotes.