Answer: Typhoid fever is a life-threatening infection caused by the bacterium Salmonella Typhi. It is usually spread through contaminated food or water. Symptoms include prolonged fever, fatigue, headache, nausea, abdominal pain, and constipation or diarrhoea.
Explanation:
Mast cell release histamine and heparins molecules that are significant in initiating/mediating the inflammatory response. This is why mast cells are highly granulated and are categorized as granulocytes. An example of such a response is when an allergen bind to the IgE of a mast cell inducing secondary communication mechanism inside the cell leading to release of the transmitters.
Answer:
Yes, the population can evolve differently with resistance gene to the HIV
Explanation:
AIDS is a deadly disease caused by the Human immunodeficiency virus. The HIV infection ultimately results in the death of the host and the cases are increasing every year.
If in the population of the area affected with the HIV AIDS develop some resistant gene to the disease, therefore, the resistant gene will be passed on to the generation and the population will evolve differently as a measure or response of adaptation and natural selection.
The case of sickle cell anaemia with modified shapes of red blood cell in the population of Africa, a resistance mechanism to malaria can act as evidence to the HIV case.
Thus, Yes, the population can evolve differently with resistance gene to HIV is the correct answer.
Answer:
C.
Explanation:
Parallax method is used to measure the distance of nearby objects in space or measurement of star distances. Parallax method uses the measurement of movement of star's against starts at far points as Earth revolves around the sun.
To improve the accurate measurement of star distances through parallax method, a gap of about six months between two observations.
In the parallax measurement, two angles are measured and it includes Earth on one side of its orbit, Earth six months later on the other side of its orbit and side of a triangle formed by the star. This six month gap ensures that measurement of stars is taken from two farthest points which gives a large arc length.
As parallax is based on geometry so, it ensure that the large arc length will reduce the error in the measurement of the angle and the distance will be accurate.
Hence, the correct answer is C.
Answer:
Phenylalanine- TTT, TTC
Serine- TCT, TCC, TCA, TCG, AGT, AGC
Isoleucine- ATT, ATC, ATA
Valine- GTT, GTC, GTA, GTG
Glycine- GGT, GGC, GGA, GGG
Alanine- GCT, GCC, GCA, GCG
Explanation:
Hope it helped :)