Articles and methods for the active transport of molecules into, within, and/or from a matrix are generally described. In some embodiments, an electric field may be used to alter the position of the molecule with respect to the matrix. The electric field may be used to move the molecule ...
4 Which is an example of active transport? A movement of glucose molecules into the cells of the villi B movement of glucose molecules down a concentration gradient C movement of ions in blood plasma D movement of water in the transpiration stream 相关知识点: 试题来源: 解析 A 反馈 收...
For almost a century, industrial chemists have had to rely on hellishly high temperatures and gas pressures to cleave the tenacious chemical bond that holds together each two-atom nitrogen molecule. That done, chemists can use the nitrogen from the atmosphere to make fertilizers, explosives, and ...
On the subject of acids, this has been another popular post. I suppose if there’s anything more fun than an acid that eats through the bottle you’re trying to store it in, it’s an acid that smells of Parmesan and vomit. Seriously, it is an interesting one: we’re all familiar w...
CD36 is required for phagocytosis of apoptotic cells by human macrophages that use either a phosphatidylserine receptor or the vitronectin receptor (alpha v beta 3). J Immunol 161:6250–6257. CAS PubMed Google Scholar Fadok VA, Bratton DL, Konowal A, Freed PW, Westcott JY, and Henson PM...
The concentration range in which a drug can be used. At the lower end, the drug is not effective, and at the top end, the drug is too toxic to use. A small therapeutic window reduces the usefulness of a drug. Transcytosis A form of vesicular transport that carries macromolecules across ...
How do cells use active transport to maintain homeostasis? Why do cells need carrier proteins that transport glucose? How does active transport work in a cell? How are cells affected by the movement of water? Why do cells contain a small amount of ATP? How does the plasma membrane allow ce...
Proteins that associate reversibly with the membrane and thus can be found in the cytosol, in the membrane, or in both places.mediated by dephos/phos or ligand binding membrane fluidity depends on flippasesfloppasesscrambleases flippase enzyme requires ATP to transport lipids from one leaflet to ...
Passive transport saves energy, and allows the concentration of substances to equilibrate or become equal with that of the environment. If cells... Learn more about this topic: Passive & Active Transport in Cells from Chapter 3/ Lesson 2...
Positive selection of H2–M3-restricted T cells makes use of only a few mitochondrial peptides, but these can select a diverse group of T cells (which is known as thegemischmodel). H2–M3-restricted CD8+T cells are early responders in primary infection. For reasons that are not yet clear...