Cells must move materials through the {membrane} and throughout the {cytoplasm} to maintain {homeostasis} Movement of substances is regulated because membranes are {semi} permeable. Membranes are {phospholipid} bilayers that contain embedded {proteins} The cells external environment and cytoplasm are aqueous, meaning that solutes such as {salt}are dissolved in a solvent called {water} Water may travel slowly through the membrane by {osmosis} or quickly through protein channels called {aquaporins}
Angiosperms are the most diverse
and successful plant group. It has double fertilization which leads to the
formation of an endosperm. It also has a stamen with two pollen sacs. It has a
phloem tissue that is composed of sieve tubes and companion cells.
There are 4 electrons altogether shared between carbon atoms in a molecule of C2H4, to be more precise there are 2 electron pairs shared between the carbon atoms.
They can be described through GENOTYPE because dominant always shows through phenotype.
