Cell Biology and Structure

Golgi Complex is represented by several structures like membranes, vesicles and granules. It appears as a central stack of flattened inter communicating sacs called cisternae in a parallel arrangement along with tubules and vesicles. The cisternae are continuously being formed at one end and bud off as vesicles at the other end of the stack. In plant cells, cisternae are 15 to 20 in number and form discrete structures called dictyosomes. In animals they are 3 to 7 in number.

Golgi Complex is represented by several structures like membranes, vesicles and granules. It appears as a central stack of flattened inter communicating sacs called cisternae in a parallel arrangement along with tubules and vesicles. The cisternae are continuously being formed at one end and bud off as vesicles at the other end of the stack. In plant cells, cisternae are 15 to 20 in number and form discrete structures called dictyosomes. In animals they are 3 to 7 in number.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nuclear membrance is a double unit membrane enclosing a perinuclear space. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus).

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and  associated histone proteins. The nucleoplasm consists of more than 90% proteins, RNA and phospholipids.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and associated histone proteins. The nucleus contains genes in the form of DNA which are responsible for inheritance of characters.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli. The nucleoplasm consists of more than 90% proteins, RNA and phospholipids. The nuclear membrance separates the nucleoplasm from the cytoplasm but at the same time it allows the exchange of necessary materials through nuclear pores.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nuclear membrance is a double unit membrane enclosing a perinuclear space. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and associated histone proteins. The nucleoplasm consists of more than 90% proteins, RNA and phospholipids.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and associated histone proteins. The nucleus contains genes in the form of DNA which are responsible for inheritance of characters.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nuclear membrance is a double unit membrane enclosing a perinuclear space. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and associated histone proteins. The nucleoplasm consists of more than 90% proteins, RNA and phospholipids.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores.The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The nucleoplasm consists of more than 90% proteins, RNA and phospholipids. The nucleolus is concerned with the formation of ribosomes.

It consists of nucleoplasm surrounded by a nuclear membrane. The nuclear membrance is perforated and the pores are called nuclear pores or nucleopores. The nucleoplasm possesses chromatin reticulum and 1 or 2 darkly stained bodies called nucleoli (sing-nucleolus). The chromatin reticulum is made up of DNA which is the genetic material and associated histone proteins. The nucleoplasm consists of more than 90% proteins, RNA and phospholipids.

These are cylindrical or filamentous structures found in all aerobic eukaryotic cells except the mature and old mammalian RBCs. Each mitochondrion is a double membrane-bound structure enclosing a dense fluid called matrix. The inner membrane is folded inwards to form cristae which increase the surface area. The matrix contains proteins, lipids, few ribosomes, enzymes and DNA. The cristae bear numerous stalked particles called the oxysomes.

These are cylindrical or filamentous structures found in all aerobic eukaryotic cells except the mature and old mammalian RBCs. Each mitochondrion is a double membrane bound structure enclosing a dense fluid called matrix. The inner membrane is folded inwards to form cristae which increase the surface area. The matrix contains proteins, lipids, few ribosomes, enzymes and DNA. The cristae bear numerous stalked particles called the oxysomes. Mitochondria provide site for cellular respiration resulting in the formation of energy. Hence they are termed as the storage batteries of the cells.