There are taste buds. each of these contains taste receptors

Approx 8000 to 10,000 taste buds are present and these contains five taste receptors.

Step-by-step explanation:

Taste buds have microscopic hairs called microvilli which is very sensitive. These tiny hairs sends message to the brain about various tastes. So we may know different taste like it is salty, sour, bitter or sweet.The human tongue have 8000 to 10,000(approx.) taste buds are present.

There are five taste receptors are present on the taste buds like sweet, salty, bitter, sour and umami. Both sour and salty taste detected through ion channel, while sweet, bitter and umami taste is detected by G-proteins coupled taste receptor.

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source: