DNA_2_2

In the structure of DNA, where are phosphate groups located?

• a) Between the sugar and nitrogenous base

• b) In the nitrogenous base pairs

• c) On the ends of the sugar-phosphate backbone

• d) Inside the nucleus of the cell

What happens to the pH of a solution when nucleic acids with phosphate groups are added?

• a) The pH becomes more acidic.

• b) The pH becomes more alkaline.

• c) The pH remains unchanged.

• d) The pH fluctuates unpredictably.

In the DNA double helix, phosphate groups alternate with:

• a) Sugars

• b) Nitrogenous bases

• c) Amino acids

• d) Fatty acids

Which process in cells involves the synthesis of RNA using the negative charges of phosphate groups?

• a) Translation

• b) Replication

• c) Transcription

• d) Protein folding

The repulsion between phosphate groups in DNA's backbone is counteracted by what type of chemical bonds?

• a) Hydrogen bonds

• b) Covalent bonds

• c) Ionic bonds

• d) Peptide bonds

Which type of sugar is found in RNA molecules, characterized by a hydroxyl group at carbon 2'?

• a) Glucose

• b) Ribose

• c) Deoxyribose

• d) Fructose

In DNA, what type of sugar is present, with a hydrogen atom at carbon 2'?

• a) Ribose

• b) Glucose

• c) Deoxyribose

• d) Maltose

What is the key structural difference between ribose and deoxyribose?

• a) The presence of nitrogen atoms

• b) The type of bonds they form

• c) The presence or absence of a hydroxyl group at carbon 2'

• d) The number of carbon atoms in the molecule

The pentose sugar ribose is a fundamental component of:

• a) Proteins

• b) Carbohydrates

• c) Lipids

• d) RNA

Which nucleic acid contains deoxyribose as its sugar component?

• a) RNA

• b) DNA

• c) Both RNA and DNA

• d) Neither RNA nor DNA