- enzyme pepsin: chemically digests the proteins in the food, breaking down into amino acids
- hydrochloric acid (strong acid): provides an acid environment for pepsin and kills bacteria (food); without this acid, the stomach could not function properly.
<span>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.</span>
Answer:Scientists observe the frequency of the different forms of the gene and how it changes in response to the environment
Explanation:
Ans.
In some organisms, such as crocodiles, lizards, and turtles, gender determination is affected by temperature. In turtles, the eggs become female when the temperature is higher, while eggs become male when temperature is less than that of required by female development.
Thus, to hypothesizes that the gender determination in turtles is affected by temperature, 'the scientist should expose different groups of turtles to different sets of temperatures in a laboratory.'
Outer core is the answer - Appex
