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30 votes
3 answers
1k views

Is telomere length a reliable measure of health/lifespan?

1 vote
2 answers
188 views

If race doesn’t exist; why do humans look so different?

3 votes
2 answers
119 views

What is H-activation vs. O-activation in the context of cellular respiration?

2 votes
1 answer
37 views

Flow of left ventricle into the aorta

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0 answers
18 views

Neuronal reflex circuit

5 votes
1 answer
169 views

Optimal carbon dioxide concentration range for the human body

3 votes
3 answers
403 views

Is reverse senescence/"anti-aging" actually scientifically possible among humans yet?

4 votes
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75 views

Alzheimer's drug Aduhelm causing viral encephalitis

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39 views

Chromosomes in humans and chimpanzees

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1 answer
131 views

What is the difference between digesting sugar and carbohydrates?

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60 views

How do organs grow to the exact shape and size?

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14 views

Human Eye Diagram: question about some dimensions

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1 answer
108 views

What is the approx. diameter of a completely "folded up" human DNA molecule, in inches?

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33 views

Muscle contraction and closing in of z line/disc

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