Answer:
According to the image that represents a cell in the human body, the true statement is that structure 4 is the cell membrane that provides exchange of O₂ & CO₂.
Explanation:
In cells, the cell membrane acts as a semi-permeable barrier to the passage of substances, including nutrients and oxygen (O₂).
One of the functions of the cell membrane is to allow the exchange of O₂ —necessary for the cell— and carbon dioxide (CO₂), a product of cell metabolism that must be removed.
In the image, the structure identified with the number 4 corresponds to a cell membrane of human cells that provides this gas exchange.
The other options are not correct because:
- <em>Structure 1 is a ribosome, not a </em><u><em>chloroplast</em></u><em>.
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- <em>Structure 2 is the nucleus, not a </em><u><em>vacuole containing DNA</em></u><em>.
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- <em>Structure 3 is a </em><u><em>mitochondria</em></u><em>, but protein synthesis does not occur there.</em>
We multipli 3 kg by (1000 g/1kg)
3 kg=3kg.(1000 g/1 Kg)=3000 g.
d. 3,000 g
<span>Eventually the smaller, lighter beetles will out breed the larger, darker ones. Because they can avoid predators more easily, allowing them to reproduce more often and with better results. The larger, darker beetles will inevitably be found more often by predators and as such won't be able to reproduce as often, or as safely, as the smaller, lighter beetles.</span>
The answer would be B.) Killer Whales
Hope this helps :)
Is a nurse for old people or children?
