Euglena is microbial eukaryote that has chloroplasts and can thus perform phtosynthesis. when deprived of light and treated with specific chemicals in lab, the chloroplasts are completely destroyed. based on the information above, if we re-expose euglena to light what do you predict will happen?

Euglena have diversed nutritional requirements. They are autotrophic when kept in light and heterotrophic when deprived of light.

The Euglena contains chloroplast in it to perform photosynthesis in the presence of light.

When the Euglena is kept in the dark it starts deriving energy from the organic matter around it and shows heterotrophic mode of nutrition.

When light will be provided to Euglena it will start resynthesizes its photosynthetic pigment and it will start perform photosynthesis.

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.