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Are flattened membranes that package cellular substances?
Flattened membranes that package cellular substances are called vesicles or cisternae. They are responsible for sorting, packaging, and transporting molecules within the cell, playing a crucial role in intracellular transport and secretion processes. Examples include the Golgi apparatus and endoplasmic reticulum.
Do hydrophobic molecules cross cell membranes?
Yes, hydrophobic molecules can cross cell membranes because cell membranes are made up of a phospholipid bilayer that is permeable to nonpolar molecules like hydrophobic ones.
Can large hydrophobic molecules cross cell membranes?
Yes, large hydrophobic molecules can cross cell membranes through passive diffusion.
What are the differences between hydrophilic and hydrophobic cell membranes and how do these differences impact the movement of molecules across the membrane?
Hydrophilic cell membranes are attracted to water, while hydrophobic cell membranes repel water. The differences impact the movement of molecules across the membrane because hydrophilic molecules can easily pass through hydrophilic membranes, while hydrophobic molecules can pass through hydrophobic membranes. This selective permeability allows the cell to control what substances enter and exit.
Where is an ATP nucleotide made?
ATP nucleotides are primarily synthesized in the mitochondria of cells through a process called cellular respiration. This process involves the breakdown of glucose to produce ATP molecules, which serve as a key energy source for the cell.
What is a series of large flattened membranes that are a pathway through cytoplasm?
The endoplasmic reticulum (ER) is a series of large flattened membranes that form a network of interconnected tubules and sacs in the cytoplasm of eukaryotic cells. It plays a key role in protein and lipid synthesis, as well as in the transport of molecules within the cell.
Where are Secretory proteins and membrane molecules are synthesized mainly by what?
Secretory proteins and membrane molecules are mainly synthesized by the endoplasmic reticulum (ER) in eukaryotic cells. The ER is a network of membranes where proteins are synthesized and processed before being transported to their final destinations within the cell.
When is vitamin D synthesized?
Vitamin D is synthesized when modified Cholesterol molecules. . .
What is comprised of a phosphate group linking a diglyceride to a nonlipid group and can be synthesized primarily from fatty acids in the body?
Phospholipids are comprised of a phosphate group linking a diglyceride to a nonlipid group. These molecules can be synthesized primarily from fatty acids in the body to form important components of cell membranes.
Are flattened membranes that package cellular substances?
Flattened membranes that package cellular substances are called vesicles or cisternae. They are responsible for sorting, packaging, and transporting molecules within the cell, playing a crucial role in intracellular transport and secretion processes. Examples include the Golgi apparatus and endoplasmic reticulum.
Do hydrophobic molecules cross cell membranes?
Yes, hydrophobic molecules can cross cell membranes because cell membranes are made up of a phospholipid bilayer that is permeable to nonpolar molecules like hydrophobic ones.
Vitamin D is synthesized when what molecules are modified?
Cholesterol
What cell part receives nerve impulses and hormones from other?
receptor molecules on cell membranes receptor molecules on cell membranes
Can large hydrophobic molecules cross cell membranes?
Yes, large hydrophobic molecules can cross cell membranes through passive diffusion.
Does plasma membranes have molecules on their surface that identifies them?
No
Does biological molecules proteins and lipids have cell membranes?
Proteins and lipids don't have cell membranes but are the molecules that make up the bulk of what a cell membrane is.
What are proteins found in cell membranes that transport large molecules?
carrier molecules
