Wei Ming and Wei Ling woke up late for school one day. In their rush, Wei Ming left his slice of bread in the oven, while Wei Ling shoved her slice of bread into the refrigerator.
Three days later, Wei Ming noticed that some parts of his bread had turned greyish
green, while Wei Ling's had not.
teor
(a) Suggest what happened to the bread left in the oven.
(b) The reason stated in Question 3(a) is your hypothesis for the experiment. Pose a
question to test your hypothesis.
(c) (i) State the variable that should be changed during the experiment.
(ii) State one variable that should be kept constant for the experiment.
(iii) Suggest how the result may be affected if the variable stated in Question 3(c)(ii)
is not kept constant.

d

explanation:

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.

i think that it is plants