DNA PREVIOUS KNOWLEDGE

DNA stands for

(a)  

proteins are composed by?

• acids

• aminoacids

• molecules

• ribosomes

The molecule pictured is a monomer of _______.

• RNA
• DNA
• a carbohydrate
• a protein

one of function of protein

• build new body tissue

• combine the cells with the protein in the body

• copy the DNA

• build doble helix

where is comes from the aminoacids?

• cytosine

• food we eat

• blood and cells

• proteins

the proteins are composed by?

• carbon-oxygen and nitrogen

• hydrogen -carbon-oxygen and nitrogen

• carbon and nitrogen

• carbon-oxygen

The difference between DNA and RNA are

• DNA has H and RNA OH in the 3' carbon

• DNA has H and RNA OH in the 2' carbon

• In DNA T is present and in RNA U is present

• DNA is double strand and RNA is single strand

In a molecule of double-stranded DNA, the amount of adenine present is always equal to the amount of _________.

• cytosine
• guanine
• thymine
• uracil

A sac like organelle that stores water, food, and other matter

• vacuole

• lysosome

• cytoplasm

• cell wall

The shape of DNA.

• double helix
• nucleotide
• DNA polymerase
• single stranded