Biomolecules

A short video review.

Carbohydrates

Lipids

Proteins

NUCLEIC ACID NOTES

Nucleic Acids

Molecules containing hydrogen, oxygen, nitrogen, carbon & phosphorus

Function in the body

Store & transmit hereditary or genetic information

Building Blocks

Nucleotides – the building blocks of nucleic acids Nucleotides have 3 parts:

5-carbon sugarA phosphate group

Sugar and phosphate are held together by strong covalent bonds

A nitrogenous (nitrogen-containing) base (adenine, thymine, cytocine, guanine)

Bases are held together by weak hydrogen bonds.

Check for Understanding #1

The diagram below represents a portion of a nucleic acid molecule. The part indicated by arrow X could be 1 adenine 2 ribose 3 deoxyribose 4 phosphate

Nucleic Acids Video

Check for Understanding #2

The weakest bonds in a double-stranded molecule of deoxyribonucleic acid exist between the (1) deoxyribose sugars (2) phosphate groups (3) nitrogenous bases (4) 5-carbon sugars

Examples

Ribonucleic Acid (RNA)

Deoxyribonucleic Acid (DNA)

Check for Understanding #3

One similarity between DNA and RNA molecules is that they both contain1 the same sugar2 genetic codes based on sequences of

bases3 a nitrogenous base known as uracil4 double-stranded polymers