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Crank
3 years ago
13

Why do you think DNA is duplicated before

Biology
1 answer:
Anna71 [15]3 years ago
5 0

The two cells that result from a single cell need to have the same amount of genetic material as the initial cell, therefore the DNA needs to be duplicated before the cell divides.

The sister chromatids are attached together so that during anaphase the daugther cells will receive the same chromosomes

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A cell membrane has a double layer of molecules. These molecules are made up of a phosphorus-containing “head” and two long, fat
podryga [215]
D I believe, in the picture that is attached explains

6 0
3 years ago
Can fatigue seriously impair driving ability.<br> a.no<br> b.yes
NikAS [45]
The correct answer is B.

When your body and mind are fatigued you are out into a field of fuzziness. When dealing with extreme fatigue, there is the obvious problem of falling asleep in the road, which could result in terrible and most likely fatal accidents. But there are also other problems mentally and visually that can occur that would impair your driving ability when facing extreme fatigue.

I hope this helps! :)
5 0
3 years ago
Why does you need to breathe more during exercise respiratory system?
swat32
If you don’t, you’ll either pass out or die.
3 0
3 years ago
Which part of the iceberg displaces water equal in weight to the buoyant force?explain.
ohaa [14]

The iceberg has weight Wi = Mig and the buoyant force is equal to the weight of the displaced water, Ww = Mwg. Furthermore, since the iceberg is floating, its weight exactly balances the buoyant force:


Ww = Wi
Mwg = Mig
VwRhowg = ViRhoig
Vw = Rhoi/Rhow Vi

So, the fraction of ice underwater, Vw/Vi, is given by the ratio of densities Rhoi/Rhow=0.87. Over 87% of an iceberg's volume (and mass) is underwater. As you can see, the convenient definition of the gram gives us a quick way to see how much of a floating substance lies below the surface of fresh water: the fraction is equal to that substance's mass density in g/cm?.

Summary

<span>Archimede's Principle of bouyancy states that the bouyant force on an object is equal to the weight of the fluid displaced by that object.<span>The underwater fraction of a substance floating on water is given by that substance's mass density in g/cm3.</span></span>
4 0
3 years ago
1.) Citrus Red Mites can disperse to other locations by ______.
Ivanshal [37]

Answer:

A crawling and roping

They can help us identify the insect

5 0
2 years ago
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