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Vitek1552 [10]
3 years ago
7

Do bacteria cells have a nucleus?

Biology
2 answers:
scoundrel [369]3 years ago
8 0
No they don't, they are prokaryotes which means they have no nucleus or membranous structure in their cytoplasm.
Fudgin [204]3 years ago
5 0
Yes they do because a nucleus is the control center of all unicellular organisms and multicellular organisms.
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In the pulmonary circuit, veins carry oxygen-____ blood, and in the systemic circuit, veins carry oxygen-_____ blood.
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In the pulmonary circuit, veins carry oxygen rich blood, and in the systemic circuit, veins carry oxygen poor blood.

<h3>Pulmonary and Systemic Circuit of the Cardiovascular system</h3>

The Cardiovascular System concerns all relations and interaction with the heart . It consists of

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The Systemic circuit is responsible for carrying oxygenated blood away from the heart and pumps it   towards the organs and tissues of the body and returns it to back to the heart as deoxygenated blood  

While the Pulmonary Circuit carries deoxygenated blood away from the heart towards the lungs and also  brings it back as oxygenated blood to the heart again.

Read more on the Pulmonary and Systemic Circuit here: brainly.com/question/9705408

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