Answer:
Acid , phenol or protein
Explanation:
The ratio of absorbance at 260 and 280nm is what is usually used to assess the purity which a DNA or RNA posses. A ratio of 1.8 is generally accepted as being pure for a DNA sample and a ratio of 2.0 is generally accepted also as being pure for RNA. when the ratio is significantly lower in each case, it indicates that there is presence of protein, phenol or other contaminants.
Answer:
droplet consists of exposure to larger, smaller and particles when a person is close to a infected person. airborne consist of smaller droplets even for greater distance
Answer:
b slow the normal reuptake of excess serotonin from synapses in depression
Explanation:
Serotonin is a neurotransmitter that transports signals or messages between neurons.
Although other neurotransmitters are involved in depression affection, alteration in serotonin levels is an important cause of the disease.
Affected people that express depression show an alteration of the normal serotonin levels in the interneuronal space. There is a noticeable decrease in molecule concentration due to an increase in its reuptake.
The substances used in the depression treatment belong to the SSRI group. SSRI means Serotonin Selective Recapture Inhibitor. It means that these substances inhibit the reuptake of serotonin that usually occurs in affected patients.
ISSR treats depression by enhancing serotonin levels and its transmission by blocking the reuptake in neurons. In this way, there is more serotonin available to improve communication between neurons.
ISSRs are selective because their principal target is the serotonin molecule and not the other neurotransmitters.
Answer:
I think it's (Graphs of a lot of data) but I'm not sure
Answer:
hey u blocked me pliz unblock me yer
Explanation:
