Answer:
D) EPSPs
Explanation:
Glutamate is a very important and powerful excitatory neurotransmitter. It is largely secreted by nerve cells present in the brain. Glutamate is known to bind ionotropic receptors. By ionotropic we mean to say that on ligand binding, such receptors tend to open and allow passage of ions. As soon as glumatate binds its receptor present on the plasma membrane, it causes excitatory electrical responses to occur by opening Na⁺ channels which causes influx of Na⁺. More Na⁺ inside the neurons leads to the change in the membrane potential which is known as EPSPs (excitatory postsynaptic potential) and this state is known as depolarized state.
In short, glutamate causes sodium ion channels to open up in the neurons and this flow of Na⁺ is known as excitatory postsynaptic current (EPSC) and as explained in the paragraph above, this EPSC finally leads to EPSPs (excitatory postsynaptic potential).
Heart disease
Heart disease is the leading cause of death in the United States, and forces many to apply for disability benefits every year.
Answer:To produce a GM plant, new DNA is transferred into plant cells. Usually, the cells are then grown in tissue culture where they develop into plants. Genetic modification of plants involves adding a specific stretch of DNA into the plant's genome, giving it new or different characteristics.
Explanation:
Answer
Reverse transcription is the synthesis of DNA from an RNA template. Retrovirus is also a class of RNA viruses, that are characterized by the presence of an RNA - dependent DNA polymerase.
Reverse transcriptase are primer and template dependent just like other DNA polymerase.
Reverse transcription begins when the viral particle enters the cytoplasm of a target cell. The viral RNA genome then enters the cytoplasm as a part of the nucleoprotein complex.
The process of reverse transcription generates in the cytoplasm a linear DNA duplex through a intricate several processes.
Answer:
A cell that has Damaged p53 gene , A) may become Cancerous; B) may experience uninhibited and out of control cell division; C) may accumulate multiple mutation.
Explanation:
- p53 gene is a tumor suppressor gene that encodes a polypeptide that acts as a transcription factor.
- Mutation in p53 is associated with 50% of human cancers.
- Loss of p53 removes DNA damage check point.
- Mutation in p53 prevents DNA repair and the apoptosis of cells that contain irreparable damage.
- as a result the cells may accumulate multiple mutations.
- Since Functional p53 promotes DNA repair and arrest the cell cycle if a damaged DNA is present; any mutation in p53 may result in uncontrolled cell growth and tumor formation.
