Answer:
3. An Apple Turning Brown
Explanation:
When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products.
The digestive system is many made up may organs like the stomach, large intestine, small intestine and many! This system takes care of the digestion of foods we intake by releasing many enzymes. Stomach hack HCL which helps in breakdown of food
Repeated pattern containing a sugar called deoxyribose and a phosphate group
Two different types of succession—primary and secondary—have been distinguished. Primary succession occurs in essentially lifeless areas—regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier.
<span>b. most positively charged
</span>In gel electrophoresis the most positively charged DNA fragments end up at the bottom of the wall of gel.NOT:
a. straightest
c. largest
<span>d. smallest</span>