Complete the sentences to describe the structure of DNA. The shape of the DNA molecule is called a double

The shape of the DNA molecule is called a double helix.

This is because the structure has four main chemicals that join together in specific patterns that looks like a double helix.

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answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.