prova 1

cosa rapprenta?

• molecola

• atomo

• cellula

Answer explanation

studia pag

The shape of DNA.

• double helix
• nucleotide
• DNA polymerase
• single stranded

X outlines a(n) ___________.

• amino acid
• nitrogen base 
• nucleotide
• nitrogen base pair

Identify #2.

• nitrogen base
• phosphate group
• deoxyribose sugar
• nucleotide

The drawing shows the structure of what molecule?

• A DNA molecule
• A lipid molecule
• A carbohydrate molecule
• A protein molecule

The two strands of nitrogenous bases in DNA are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Quale tra le seguenti basi azotate non è presente nel RNA

• Adenina

• Uracile

• Timina

• Guanina

• Citosina

Ogni quante basi azotate viene codificato un amminoacido?

• 3

• 4

• 2

• 5

segna le alpi