Answer:
Option A, Acquisition
Explanation:
The first stage of learning is known as acquisition. It causes establishment of responses by pairing of Neutral stimulus, conditioning and un-conditioning stimulus. Once the association between a neutral stimulus and conditioned stimulus is established, the responses are acquired.
For example – If a bird is trained to pick a key whenever there is a sound of a bell, then after certain period of time an association will be established between the “ringing of bell” and “picking up of key” activity. Therefore, whenever the bird will hear the ringing sound it will search for key to be picked.
Thus, option A is correct.
Habitat isolation is likely to be most relevant in the case of trumpeters in the Amazon basin.
If trumpeters can not cross rivers, then they would be able to mate with trumpeters on the same side of the river but not on the other side- a form of prezygotic isolation.
what are trumpeters?
The term "trumpeter" comes from the deep, booming territorial call of these chicken-sized, long-necked, hunch-backed, small-headed, short-tailed, dark-plumed, long-legged birds that wander the jungle floors of South America.The land of South America that now the Amazon River and its tributaries drain is recognized as the Amazon basin.
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Chymotrypsin is permanently inhibited by TPCK. Additionally inhibits certain cysteine proteases, including ficin, papain, caspase, and bromelain. For the chemical labeling of active histidine in enzyme analysis, TPCK is chosen. Because the enzyme has a preference for aromatic amino acid residues at the active site, the phenylalanine moiety is attached to the enzyme (as in chymotrypsin, in which it binds to the Histidine-57 residue in the active site).
[1] Neither zymogens nor trypsin are inhibited by it.
In the crystal structure of the complex solved in 2010, TPCK is seen covalently bonded in the active site of Caspase 3.
[2] With the chlorine removed, the chloromethyl group interacts with the cysteine in the active site to form a covalent connection.
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DNA replication is the process by which DNA makes a copy of itself during cell division. The first step in DNA replication is to 'unzip' the double helix structure of the DNA? molecule. ... The separation of the two single strands of DNA creates a 'Y' shape called a replication 'fork'.
The female reproductive system<span> provides several </span>functions<span>. The ovaries produce the </span>female<span> egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur.</span>
