Cell Biology and Structure

Lysosomes contain powerful digestive enzymes that can break down cellular components. They are called suicide bags because, if the cell is damaged, they can burst and digest the cell itself.

Mitochondria are known as the powerhouse of the cell because they produce ATP. Digestive enzymes are primarily found in lysosomes, not mitochondria.

The Golgi apparatus consists of stacks of flattened, membrane-bound sacs called cisternae. These structures are involved in modifying, sorting, and packaging proteins.

The presence of ribosomes on the surface of the endoplasmic reticulum is the defining feature that classifies it as 'rough' rather than 'smooth'.

The Golgi apparatus is involved in the modification, sorting, and packaging of proteins and lipids. Cell division is primarily managed by the nucleus and cytoskeleton, not the Golgi.

Cell walls are found in plants, fungi, and bacteria, but animal cells lack a cell wall.

Cytoplasmic streaming, or cyclosis, is the directed flow of cytosol and organelles around the cell, which facilitates the transport of materials.

The cell membrane (plasma membrane) is a universal feature of all living cells, acting as a selective barrier between the cell interior and the environment.

Mitochondria are the powerhouse of the cell because they generate ATP. Lysosomes are the digestive/suicide bags.

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes.

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes.

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes:(i) Smooth endoplasmic reticulum (SER) in which the surface of the tubules lacks granules. (ii) Rough endoplasmic reticulum (RER) in which the surface of the tubules contain numerous granule-like structures called ribosomes.

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes.

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes: Smooth endoplasmic reticulum  and  Rough endoplasmic reticulum (RER) .Endoplasmic reticulum is absent in some cells such as embryonic cells and mature red blood corpuscles. It forms an internal supporting framework for the cell, called cytoskeleton.

It is a system of highly branching membranes, which almost fills the space inside the cell membrane. Some of the branches of endoplasmic reticulum are connected to the plasma membrane while some of them are connected to the nuclear membrane. An examination of endoplasmic reticulum under the electron microscope reveals two types of membranes.It provides surface for the synthesis of a variety of substances in the cell. SER provides surface for the synthesis of lipids while RER provides surface for the synthesis of proteins and carbohydrates.