2. Which of the following can survive either with oxygen or without it?
facultative anaerobes
3. Where are you likely to find a photoautotroph?
near the surfaces of lakes and streams
4. During what process do prokaryotes exchange genetic information?
conjugation
5. What would be a direct consequence of the disappearance of nitrogen-fixing prokaryotes?
<span>Organisms would not be able to get nutrients they need to make proteins</span>
It can reduce it by 30 percent
You would the find the greatest diversity of species in a temperate kelp forest.
I hope this helps.
<span>If you examine a rock sample and observe fossils in it, the type of rock the sample represent in C - sedimentary. Igneous rock is a melted and cooled rock and there are no remains of any kind of fossils. Still, can be found some fossils traces in some metamorphic rocks with the lowest grade of metamorphism but those are very very rare.
the answer is C, sedimentary </span>
Answer:
Sodium chloride removes proteins from DNA and helps in DNA precipitation.
Explanation:
The Deoxyribonucleic acid (DNA) is negatively charged due to the highly polar phosphate groups that make up the phosphate backbone. The molecules of water are also highly polar and they have positive charge, thereby water molecules interact with the negative charges of the DNA. The sodium chloride generates temporary attraction forces between sodium (positive) ions and the DNA backbone (negative), thereby DNA can be disassociated from the aqueous layer. Moreover, sodium chloride helps to remove proteins (histones) that bound to DNA and also helps to maintain proteins in the aqueous layer.