cell membrane
Animal cells are surrounded by a cell membrane.
Cells are surrounded by a cell membrane, also known as the plasma membrane. This thin, semi-permeable barrier separates the contents of the cell from its external environment while controlling the passage of substances in and out of the cell.
Cells are typically surrounded by a cell membrane, also known as the plasma membrane. This structure provides a protective barrier around the cell, regulating the passage of molecules in and out of the cell.
Human cells are always surrounded by a cell membrane, also known as the plasma membrane. This thin, semi-permeable barrier controls what enters and exits the cell, helping to maintain the cell's internal environment and regulate communication with other cells.
Each cell is surrounded by a cell membrane, also known as the plasma membrane. This membrane acts as a barrier, controlling the passage of molecules in and out of the cell to maintain internal conditions for proper cellular function.
All cells are surrounded by a semi-permeable cell membrane
"a celll wall boo boo lovers baby t" Animal cells lack a cell wall. They are enclosed by a cell membrane. the correct answer is tissue so don't listen to this dumb @$$ whoever put that Actually, to answer the question, the correct answer would be a cell membrane.
It's enclosed by a barrier known as plasma membrain.
Cell Membraneorplasma membrane
Pores, known as stomata, are surrounded by two specialized cells called guard cells in the epidermis of a leaf. These guard cells control the opening and closing of the stomata, regulating the entry of carbon dioxide for photosynthesis and the release of oxygen and water vapor. They help to maintain the balance of gas exchange and water regulation in the leaf.
Podocytes form a porous membrane known as the glomerular filtration barrier surrounding the endothelial cells of the glomerulus. These specialized cells have foot-like extensions that interdigitate to create filtration slits, contributing to the selective permeability of the barrier.
A sponge is typically made up of small, porous holes called "ostia" which are surrounded by a network of cells known as "choanocytes." These cells help to filter and move water through the sponge's body, enabling it to feed and respire. Sponges also contain a protein called "spongin" which gives them their flexible and soft texture.