In protein synthesis, modification and transport, what will be the correct order of organelles involved in the process? A. nucleus - ribosomes - Golgi complex - vesicles B. endoplasmic reticulum -ribosomes - vesicles Golgi complex C. Golgi complex - endoplasmic reticulum - vesicles - ribosomes D. ribosomes - endoplasmic reticulum - vesicles - Golgi complex
Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment.
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
In protein synthesis, modification and transport, what will be the correct order of organelles involved in the process?
A. nucleus - ribosomes - Golgi complex - vesicles
B. endoplasmic reticulum -ribosomes - vesicles Golgi complex
C. Golgi complex - endoplasmic reticulum - vesicles - ribosomes
D. ribosomes - endoplasmic reticulum - vesicles - Golgi complex
One of the meristematic tissues is vascular cambium which is responsible for increasing the diameter of stems and roots. In which part of the plants is the vascular cambium found?
A. In structure 4, where they are in the sides of stems and roots.
B. In structure 3, where they are located at the base of leaves and internodes.
C. In structure 1, where they are covered by lower and upper epidermis of the leaf .
D. In Structure 2, where they are located on the tips of stems and roots of the plants .
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