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SIZIF [17.4K]
2 years ago
10

Single-celled organisms need the following to survive

Medicine
1 answer:
BlackZzzverrR [31]2 years ago
7 0
Most organisms need oxygen to survive. The chemical reactions that allow organisms to obtain energy from food use oxygen and release carbon dioxide as a waste product. This means that there must be a steady exchange of oxygen and carbon dioxide into and out of the cell.
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A relationship is the interactions and connection you have with others.<br> True<br> False
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Answer:

the answer is true

Explanation:

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The ECGs QRS complex is the stimulus for atrial diastole.<br> a. True<br> b. False
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The correct answer will be option-A

Explanation:

Electrocardiogram or ECG is the recording and representation of the electrical changes that are taking place during the cardiac cycle.

The QRS complex is preceded by the P wave or atrial systole or atrial depolarization after which the electrical signals are passed on to the AV node.  

As soon as the AV node passes the electrical signals to bundle of His, it is observed in as the QRS interval which represents the atrial diastole and the onset of ventricular depolarization.

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