A single human B cell can produce only D. 1 antibody.
It produces a single species of antibody, with unique antigen-binding site.
English holly
explanation !!!!
Ilex aquifolium, commonly called English holly, is native to Europe, western Asia and north Africa. It is an erect, pyramidal, densely-branched, evergreen tree that typically grows to 30-50' (less frequently to 80') tall. It also may be trained and grown as a large shrub (10-15' tall).
Answer:
f a flower contains all four main parts ( sepals , petals, stamens, and carpels), it is called a complete flower. Sepal: This typically green, leaf-like structure protects the budding flower. Collectively, sepals are known as the calyx. Petal: This plant structure is a modified leaf that surrounds the reproductive parts of a flower.
Explanation:
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Answer:
Explanation:The phospholipid bilayer formed by these interactions makes a good barrier between the interior and exterior of the cell, because water and other polar or charged substances cannot easily cross the hydrophobic core of the membrane. Can water cross the plasma membrane at all?
It also helps the cell move things in and out. The cell membrane is made of what is called a phospholipid bilayer, which means it has two layers of phospholipids. ... This allows the phosphates to be exposed to water, either in the cell or the environment, while the lipids are protected from water Lipids are essential for all life on Earth. They play many important roles in maintaining the health of an organism. Arguably the most important function lipids perform is as the building blocks of cellular membranes. Other functions include energy storage, insulation, cellular communication and protection.Large quantities of water molecules constantly move across cell membranes by simple diffusion, often facilitated by movement through membrane proteins, including aquaporins. In general, net movement of water into or out of cells is negligible.
The answer is; Mantle
Convection currents in the mantle drive tectonic plate movements. The convection currents in this regions are like those of water. The cooler upper mantles sink to the bottom and the hotter lower mantle rises. This circulation causes fiction drag with the overlying crust and therefore causes it to drift.
