12
But what I got taught was that in a haploid cell there was 23 but that may be in a specific thing.
I am a population.
-Hope I helped.
Yes
None of them produce their own energy
Ventricular systole is when the ventricles of the heart as the result of electrical activity which helps to pump blood. During ventricular systole oxygenated blood is pumped from the left ventricle through the aortic valve and aorta. Simultaneously deoxygenated blood is pumped from the right ventricle through the pulmonic valve and pulmonary artery to the lungs. Using this explanation blood enters the aorta and pulmonary artery during ventricular systole. <span />
I swear it's the cell membrane.. I'm not sure though
