Homeostasis is the process by which organisms maintain a stable internal environment. The cell nucleus is a cell's control center containing DNA, and the cytoplasm is a gel-like substance in which cell organelles are located. Cell structures including the cell membrane, cell wall, chloroplasts, lysosome, Golgi body, endoplasmic reticulum, and vacuoles play vital roles in the cell's function and maintenance.
Homeostasis is the process of maintaining a stable internal environment within an organism. It is vital for proper physiological function and is achieved by various systems in the body working together to balance internal conditions such as temperature, pH levels, and electrolyte balance, option B is correct.
The cell nucleus is the central control center of a cell, which houses genetic material in the form of DNA. It manages the cell's activities including growth, metabolism, and reproduction by regulating gene expression, option D is correct.
The cytoplasm is the gel-like substance within the cell membrane that contains all the organelles and contributes to the various cellular processes that occur inside the cell, including metabolic pathways, and signal transduction, option C is correct.
The cell membrane is a protective barrier that controls what enters and leaves the cell. It maintains the integrity of the cell and facilitates communication with the external environment through its semi-permeable nature, option C is correct.
A cell wall is a rigid outer layer found in plant cells, providing structural support, protection, and mediating interaction with other cells, option C is correct.
Chloroplasts are specialized organelles in plant cells that perform photosynthesis, converting light energy into chemical energy stored as glucose, option D is correct.
A lysosome is an organelle that contains enzymes used for breaking down cellular waste and foreign material in the degradation and recycling processes within the cell, option B is correct.
The Golgi body (or Golgi apparatus) is involved in modifying, sorting, and packaging proteins and lipids for delivery to their intended destinations within or outside the cell, option D is correct.
The endoplasmic reticulum (ER) plays a critical role in protein synthesis (rough ER) and lipid metabolism (smooth ER) within the cell, and it is part of the endomembrane system connecting various organelles, option B is correct.
Vacuoles are fluid-filled sacs used for storage of nutrients, waste products, and other materials, which are found in both plant and animal cells, option C is correct.