Answer:
The correct answer is "Natural killer".
Explanation:
Natural killer cells, also known as NK cells or large granular lymphocytes, are cells that have an essential role in the innate immune system. Nk cells perform immunological surveillance, and are important for prevent the growth of tumors and develop chancer. Nk cells are able to recognize targets that are only present in cancerous cells, killing them before they start to proliferate.
The sheer force of water hitting the banks<span> and bed of a </span>river causing<span> material to be dislodged and carried away ... An</span>overhanging cliff<span> that is found </span>on<span> the outer bend of a meander that is created due to lateral erosion of the </span>bank river<span>.</span>
<h2>The Forearm</h2>
Explanation:
The proximal end of the radius illustrates the relationship of form and function. The cup-like surface of the radial head articulates with the rounded shape of the capitulum. This forms a joint that allows for movement of elbows and forearms.
Radius and ulna are the two bones of the forearm. Their proximal ends articulate and fit into the cup like end of the humerus. This forms a synovial joint called the elbow joint. The movement of this joint allows the forearms to supinate and pronate.
Monomers are the basic units of larger molecules-macromolecules. These units are connected via chemical bonds and when joined in repetition, a polymer is formed.
Monosaccharides (simple sugars) are monomers that form complex sugars-polysaccharides (long chains of monosaccharides usually form the energy-storing molecules found in food) by creating glycosidic bonds. Those linkages vary widely in geometry (can be linear and branched). Besides that, monosaccharides can have different functions in the organism and monomers vary extensively (in the orientations of hydroxyl groups and in location).
Monomers of nucleic acids (deoxyribonucleic acid-DNA and ribonucleic acid-RNA) are nucleotides composed of a five-carbon sugar, a phosphate, and a nitrogenous base. Monomers of nucleic acids do not vary that much, there are only four different monomers that include adenine and guanine, which are derived from purine; and cytosine and thymine (for DNA) or uracil (for RNA), derived from pyrimidine.
