Aspecific molecule was separated from a yeast cell and then placed in a flask to find out if it would bind to another molecule. this type of experimental design is called a(n)
a. in vitro observation
b. occupational cohort study
c. age cohort study
d. clinical trial

A; in vitro observation

Explanation:

In-vitro is a process in which an experiment/organism is performed/taking place in a test tube or culture dish (controlled environment) outside of a living organism. Since a specific molecule was taken from the yeast cell and placed in a separate environment outside of its original living organism (the yeast cell), it is under in-vitro observation. A good example of in-vitro observation is IVF (in-vitro fertilization), when an egg from a mother and the sperm from a father fertilizes in a test tube outside of the mother's body and conception happens outside the body in a laboratory until it becomes an embryo and is placed back into the mother's body.

flooding wildfire landslides climate change the factors listed have an immediate effect on the animal populations found in any habitat. the four factors would lead to a death. b emigration. eliminate c immigration. d mutations.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.