DNA as a double helix made of two antiparallel strands of nucleotides with two strands linked by hydrogen bonding between complementary base pairs
What is DNA molecule composed of?
two strands of nucleotides linked to each other by their bases
What are the bonds of nucleotides in DNA?
- Phosphate to deoxyribose/sugar is covalent bond - Between bases (A,T,C,G) is hydrogen bond
Pentose sugar in DNA has nucleotides that are __________
Deoxyribose (Deoxygenated pentose sugar)
What type of shape is DNA?
Helical and coiled. Because of two strands, it's a double helix
Because DNA strands are antiparallel _____________
One strand ends with the phosphate group of a nucleotide One strand ends with a deoxyribose (deoxygenated pentose sugar)
How are nucleotides linked together in RNA and DNA?
RNA - Condensation Reaction DNA - Hydrogen Bonds
How are the strands of nucleotides arranged in DNA?
They are parallel but because they run in opposite directions, they are ANTI-parallel
A and T, C and G are ___________
complementary base pairs
