Answer:
1. c
2. b
3. a
I hope this is right but I am not sure for the last question tho.
The first two questions are right because I am in high school.
Hello
The pH range of tolerance for humans is well defined and very small for a number of reasons.
First, we must understand that all biological reactions in our body are carried out by biological catalysts called enzymes. These enzymes operate under specific pH and and temperature conditions. Deviation from these conditions will result in inefficiency of the enzymes' functions. This may be observed macroscopic-ally as poor digestion among other things.
Next, an equilibrium is necessary for the movement of CO2 in red blood cells. CO2 is kept in equilibrium in the form of carbonic acid. This equilibrium may be disturbed by the change in pH; resulting in a difficulty to breathe.
Other effects such as fatigue, headaches and nausea may also be observed as the blood circulates throughout your body and its functions will be impaired by the changed pH.
Gene expression involves formation of various proteins from specific genes. The expression starts with the process of transcription where DNA is transcribed into a mRNA by enzyme RNA polymerase. Then mRNA diffuses out of the nucleus and the process of translation takes place in the ribosomes generating a polypeptide then a protein is formed. Therefore, the correct answer is transferring of information from DNA to messenger RNA (transcription).
1. food meaning their source food could no longer be there so they have to search for something else to eat in order for survival
2. weather meaning the weather of which that animal is used to has chnaged for ex.) in Antarctica the weather is getting warmer so the polar bears and pennguins can adapt or die
