Answer:
Generally, the unsaturations of the fatty acids are of the cis type. This causes the arrangement of the molecule to be angled, with the apex at unsaturation. This angulation causes the melting points of unsaturated acids to be lower than those of their saturated counterparts and therefore are liquid at room temperature. Double bonds in trans distort little crystalline symmetry, which is very similar to that of saturated fatty acids.
Explanation:
They are long chain carboxylic acids, usually have no carbon pair (14 to 22), the most abundant have 16 and 18 carbons.
Fatty acids are saturated when they do not have double bonds, they are flexible and solid at room temperature.
Unsaturated or polyunsaturated if there are double or triple bonds in the chain, rigid at the level of the double bond being oily liquids.
Physical properties
- Solubility. They are bipolar or amphipathic molecules (from the Greek amphi, double). The head of the molecule is polar or ionic and therefore hydrophilic (-COOH). The chain is apolar or hydrophobic (-CH2- and -CH3 terminal groups).
- Melting point. In saturates, the melting point increases due to the number of carbons, showing a tendency to establish Van der Waals links between the carbonated chains. Unsaturates have fewer interactions of this type due to the elbow of their chain.
Answer:
The correct answer will be option-pseudoscience.
Explanation:
Pseudoscience is the scientific practice which is based on the belief system but has no scientific proofs to prove the generated hypothesis.
The pseudoscience makes the people believe that the practice being performed is scientific in nature but no scientific result proves the practice like the practices and belief of religions are based on the co-incidences.
In the given question, If the conclusions are not able to answer the scientific questions, then this is considered a case of pseudoscience as the data is irrelevant.
Thus, option-pseudoscience is the correct answer.
-Subduction causes the lithosphere to be recycled at plate boundaries
At destructive boundaries, tectonic plates collide, the denser plate gets subducted under the less dense plate. The subducted plate dives into the mantle, melts and is recycled.
Explanation:
At the constructive boundary, as two plates move away from each other, magma from the mantle rises to occupy the void. The magma cools to form new crust in between the two plates.
As new crust is formed at the constructive boundaries and old crust is destroyed at destructive boundaries this maintains a balance that ensures the crust is maintained more or less the same size over time. The only difference is that the crust shift position due to these tectonic plates movements driven by convection currents of the mantle.
Learn More:
For more on plate boundaries check out;
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Healthcare associated pneimonia can also
be refers to as nosocomial pneumonia and it is a type of pneumonia contacted
when in nursing home or hospital. Thus, expert usually consider it as serious
illness than pneumonia people get in daily life. However, the statement
includes:
<span>They are polymicrobial in origin</span>
<span>Bacteria enter lower respiratory tract </span>
<span>Due to abnormal breathing bacterial enter respiratory tract </span>
<span>Mechanical
ventilation can be caused by coliform bacteria</span>
