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Answer:
2. dopamine
Explanation:
Dopamine is one of the neurochemicals involved in the transmission of signals between the neurons of the brain. It is usually referred to as “the feel good” “happy” hormone that is released when stimulated by engaging in a pleasurable experience or activity. Dopamine controls the emotional and mental processes of humans. It is important in sexuality of human as it is responsible for the pleasurable feelings of satisfaction we experience.
Answer:
Addition of poly A tail and and addition of 5' cap
Explanation:
In eukaryotes, many post-transcriptional modification takes place like 5' capping, polyadenylation, and splicing. In 5' capping 7-methyl guanosine is added toward the 5' end of mRNA by the action of a enzyme called guanyl transferase. This cap protects mRNA from degradation.
In polyadenylation up to 250 adenosine nucleotides are added at the 3' end of the mRNA and it is called poly-A tail. Poly A polymerase is the enzyme that is responsible for polyadenylation.
Therefore two main post transcription modifications are 5' capping and polyadenylation.
The sudden drop in blood pressure after a motor bike accident is due to the intensive loss of blood that reduces the blood volume of the body.
Blood is the red-colored fluid present inside the body and pumped by the heart. It consists of RBCs, WBCs and platelets. Its function is to transport oxygen carbon dioxide food, hormones from one part of the body to another through the RBCs. The red color of the blood is due to the pigment hemoglobin.
Blood pressure is the pressure with which the blood flows into the arteries of the body. It is of two types: systolic pressure and diastolic pressure. The ideal blood pressure must be approximately 120/80 mmHg.
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3. all the living things in the forest ecosystem.
