active transport by endocytosis
Through a type of endocytosis called phagocytosis, where the cell membrane encloses around a macromolecule, therefore bringing it into the cell.
No, they are made of atoms, ions or molecules, or other small particles that are not cells.
Lysosome breaks down and digest complex molecules in the body. Large quantities of lyosomes are in white blood cells and other cells that fight disease or eliminate cell debris.
Animal cells do not have the same cell wall like plant cells do.Plant cells have chloroplasts for photosynthesis, but animal cells don't.Plant cells usually have one or more large vacuoles (food & liquid compartments), but some animal cells have regular vacuoles while other animal cells don't have any vacuoles. these are the reasons
Plant cells have vacuoles that can become large when filled with water and other waste or stored material. Animal cells do not contain vacuoles.
The cells make them from materials the animal takes in from the environment.
active transport by endocytosis
Cells are larger than molecules. Cells normally have molecules inside them and constantly passing through their membranes. Cells normally contain water molecules along with glucose and other molecules.
Wrong way around. Atoms join together to create molecules. These molecules then join other molecules to create cells.
No, they are made of atoms, ions or molecules, or other small particles that are not cells.
Electrons transfer energy from glucose to other molecules during redox reactions in cells.
Electrons transfer energy from glucose to other molecules during redox reactions in cells.
Cells that become too large can either block nutrients to other cells, or become a cancerous cell.
Absolutely not.Major histocompatibility complex (MHC) is a cell surface molecule encoded by a large gene family in all vertebrates. MHC molecules mediate interactions of leukocytes, also called white blood cells (WBCs), which are immune cells, with other leukocytes or body cells.
Liver and cardiac cells produce 38.Other cells produce 36.
No. The digestive process breaks down the foreign cells. Their constituent molecules may be reused as is, or may be used as building blocks for other molecules, but the cells themselves are certainly not used directly.
No. Epithelium is a protective layer of cells typically covering the outside of an organ or the lining of the wall of a cavity in the body. All body cells need organic molecules to provide energy for building proteins, lipids, and other organic molecules.
They are responsible for carrying oxygen to other parts of the body