Agroup of biology students tests the growth of bacteria under different conditions. the students apply the same amount of bacteria to identical petri dishes enriched with nutrients, then place each plate at a different temperature. the bacteria are allowed to grow for three days, after which the number of bacterial colonies on each plate is counted. what is the dependent variable in this experiment? a. the temperature at which the colonies grew b. the number of bacterial colonies after three days c. the nutrient type present in the petri dishes d. the time of day that the experiment is performed

B. The number of bacterial colonies that grew

Explanation: The number of bacterial colonies that grew depend on the temperature, nutrients, and time of day.

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.