Answer: In the image below
did the mf test foo
<h2>Transportation across the membrane</h2>
Explanation:
(a) Simple diffusion; Faciliated diffusion-Directions in which two transported solutes move
- In simple diffusion diffusion of non polar compounds across the membrane and along the concentration gradient without the involvement of protein whereas in case of facilitated diffusion membrane transport proteins that facilitate movement pf molecules across the membrane down its concentration gradient
- Both the diffusions does not require energy
(b) Facilitated diffusion; active transport-Direction the solute moves relative to its concentration gradient
- In facilitated diffusion membrane transport proteins that facilitate movement of molecules across the membrane down its concentration gradient without the expenditure of energy
- Active transport drives transportation of solute against the concentration gradient across the membrane
(c) Simple diffusion; Active transport-Directions in which two transported solutes move and Direction the solute moves relative to its concentration gradient
- In simple diffusion diffusion of non polar compouds across the membrane and along the concentration gradient without the involvement of protein and energy
- Active transport drives transportation of solute against the concentration gradient across the membrane;secondary active transporters coupled with transportation of two solute molecules
(d) Direct active transport; Indirect active transport-Direction the solute moves relative to its concentration gradient or its electrochemical potential
- Direct active transport use direct energy such as ATP hydrolysis,oxidation and sunlight energy
- Indirect active transport use indirect energy such as chemical gradient,electrochemical gradient established by direct active transporters;one solute moves along the concentration gradient while other moves against the concentration gradient
(e) Symport; Antiport-Direction in which two transported solutes move
- In symport both the solute molecules move in same direction;coupled with primary active transport(direct transport)
- In antiport both the solutes moves in opposite direction;coupled with secondary active transport(indirect transport)
(f) Uniport; coupled transport-Directions in which two transported solutes move
- Uniport is the transport of single solute across the membrane
- Coupled transport is the transport of two solute molecules across the membrane;it may be symport or antiport
(g) P-type ATPase; V-type ATPase-Kinetics of solute transport
- P-type ATPase always transport cations and undergoes phosphorylation
- V-type ATPase(here V stands for vacuole) transport protons and no phosphorylation occurs;catalytic activity is not reversible
- Both are types of primary active transporters
Answer:
Compared to X-ray crystal diffraction and magnetic resonance, single-particle cryo-electron microscopy has unparalleled advantages. This technique does not require protein crystallization, requires only a small amount of protein sample, and is suitable for samples of different sizes, for example, as small as 64. 000 hemoglobin, large particles up to several megadaltons. Frozen electron tomography can even be used for larger biological samples, such as tissues and cells, to obtain high resolution images and structures of macromolecules and their complexes in situ in cells or tissues.
Another advantage of cryo-electron microscopy is that it presents more than just static structures. Sample preparation by cryo-EM can be done in an instant, capturing dynamic changes in protein molecules. Perhaps in the future, people can observe intermolecular interactions and their dynamic changes in cells or tissues and organs. Perhaps in the future, people can observe intermolecular interactions and their dynamic processes in situ in cells or tissues and organs.
Explanation:
http://www.creative-biostructure.com/cryo-em-services_4.htm
Answer and Explanation:
a) which side of the heart collects blood from the body and pumps it to the lungs? The right side of the heart via the vena cava receives blood from the body organs into the right atrium. The resulting pressure forces the tricuspid valve to open and blood gets into the right ventricle.
b) which chamber receives blood from the lungs?
The left atrium through the pulmonary vein receives blood from the lungs.It then flows into the left ventricle through bicuspid valve.
c) which ventricle is more muscular, the left or the right? Explain.
The walls of the left ventricle is thicker than the wall of the right ventricle because the left ventricles pump blood under high pressure to the rest of the body and the left ventricle pumps blood a longer distance hence requires more force.
d) a valve is like a “one way street” in the heart that prevents blood from flowing backward. There is a valve between the atrium and ventricle on both the right and left sides of the heart. Why do you think valves are important in the circulatory system? The valves prevent back flow of blood into the ventricles when the ventricles relax.
