The diagram shows a nucleic acid in the shape of a helix.
which sugar is present in the nucleic acid that is represented in the diagram?
uracil
thymine
deoxyribose
ribose

Ans.

DNA is a complex biomolecule, made up of multiple units of nucleotides. Each nucleotide represents a combination of a nitrogen base (either cytosine, thymine, guanine, or adenine), a 5-carbon, pentose sugar, and a phosphate molecule.

The sugar present in DNA is deoxyribose sugar, which shows presence of a hydrogen atom, instead of an hydroxyl group (-OH group).

Thus, the correct answer is option). deoxyribose.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.