Answer:
The mouse and chicken have the closest relationship of the 5 presented because they have the most shared characteristics through their embryonic development. 3. Why do you think scientists study the embryological development of different species?
I’m pretty sure it’s D, the others don’t make sense??
Answer:
The statement is true.
Explanation:
During the first half of the 20th century, racism was extreme and constant in many countries. This racist thinking forced African American people to eat, drink, study and do everything in different places. Also, the only work they could do was housekeeping or physical work like construction.
Lecithin is (organic chemistry) the principal phospholipid in animals; it is particularly abundant in egg yolks, and is extracted commercially from soy. It is also a major constituent of cell membranes, and is commonly used as a food additive (as an emulsifier). While cephalin is (biochemistry) a phospholipid found particularly in the cells of nervous tissue; it is also the primary phospholipid in bacteria.
Answer:
In Pavlov's study, the unconditioned stimulus (UCS) was __Meat_; the neutral stimulus was ___bell__; and, finally, the conditioned stimulus (CS) was __bell__.
Explanation:
Pavlov was a physiologist and was studying the digestive system but he came up with the most valuable studies of psychology. He put the tubes in dog mouth to collect saliva and calculate the amount of saliva produced by dog in response to different stimuli.
- He provided the meat to dog and dog produced saliva in response to unconditioned stimulus of meat. It was the natural reflex.
- He ring the bell but there was no saliva produced by dog in response to the bell. This was called as neutral stimulus.
- Then he associated the ringing of bell just before providing the meat (unconditioned stimulus). After several time the dog started to produce saliva on ringing of bell which was conditioned stimulus (CS).
