Cell Parts And Function

Explanation
All cells have a semi-permeable membrane. This means that the membrane allows certain substances to pass through while restricting others. The semi-permeable membrane is essential for maintaining the internal environment of the cell and regulating the movement of molecules in and out of the cell. It is a characteristic shared by all cells, regardless of their type or function. The other statements are not true for all cells. Some cells do not have a cell wall, membrane-bounded nucleus, or organelles.

Explanation
The endoplasmic reticulum is involved in protein synthesis. It is a network of membrane-bound tubes and sacs located in the cytoplasm of eukaryotic cells. The rough endoplasmic reticulum (RER) is studded with ribosomes, which are responsible for protein synthesis. The ribosomes on the RER synthesize proteins that are destined for secretion or for incorporation into the cell membrane. These proteins are then transported within the endoplasmic reticulum to undergo further modifications before being transported to their final destinations within the cell or outside of it.

Explanation
Animal cells do not have chloroplasts. Chloroplasts are organelles found in plant cells that are responsible for photosynthesis, the process by which plants convert sunlight into energy. Animal cells do not perform photosynthesis, so they do not have chloroplasts.

Explanation
Chloroplasts are responsible for capturing light to enable plants to produce their own food through the process of photosynthesis. This organelle contains chlorophyll, a pigment that absorbs light energy, and other necessary components for photosynthesis to occur.

Explanation
Nerve cells, also known as neurons, are specialized cells responsible for sending impulses or signals to different parts of the body. These cells have a unique structure that allows them to transmit electrical signals, known as action potentials, along their length. Nerve cells are found throughout the body and are essential for the proper functioning of the nervous system. They play a crucial role in transmitting sensory information, coordinating muscle movements, and regulating bodily functions. Unlike other cell types listed, such as red blood cells, liver cells, muscle cells, and skin cells, nerve cells are specifically adapted for the transmission of electrical impulses.

Explanation
Lysosomes do not have a double membrane. They are single-membrane organelles that contain digestive enzymes. These enzymes help break down waste materials, cellular debris, and foreign substances. Unlike other organelles such as mitochondria, nucleus, plastids, and endoplasmic reticulum, lysosomes have only one membrane surrounding them. This single membrane allows the enzymes within the lysosomes to interact with the substances they need to break down.