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serious [3.7K]
3 years ago
6

Oxygen combines with nitrogen to form what type of chemicals that are used by plants

Biology
1 answer:
Veseljchak [2.6K]3 years ago
4 0
Chemical energy. It is commen sense
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Which type of alternative energy can produce ethanol? A. hydropower energy B. solar energy C. biomass energy D. wind energy
Lady bird [3.3K]

Answer:

C. biomass energy

Explanation:

Alcohol may be formed in the process of biochemical changes in the decay of live matter.

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2 years ago
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What statement BEST describes sound? A) It's a form of work. B) It's a type of force. C) It's a form of energy. D) It's a type o
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A) It's a form of work.

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What is happening to the DNA molecule in the figure? (Explain the first step in DNA replication)
tatuchka [14]

Answer:

As this is DNA replication, this is the unwounding process

Explanation:

In DNA replication, the parent DNA to be replicated is unwound to enable access of the replication machinery (replisome) to this genetic material. The origin of replication will be identified first, which in the prokaryotes is only one, and in the eukaryotes, we have many. This sites are recognized by specific sequences on the genome. after this, melting of the DNA occurs at this origin creating a replication bubble and two replication forks. This  allows for the unwinding of the DNA by the enzyme Helicases in the direction of the replication fork. Another enzyme present in this step is also the single strand binding proteins (SSB). These proteins function in the prevention of re-anealing of the unwound DNA strand by attaching themselves to each strands. Another enzyme called the topoisomerases also function here by reducing the torque (twisting) produced upstream of the replication fork as result of DNA unwounding. An example is the gyrase

4 0
3 years ago
Which THREE statements correctly describe the properties of water?
grandymaker [24]
<em>CORRECT STATEMENTS
> Water forms hydrogen bonds with other polar molecules. </em>
<em>> Water is a polar molecule. </em>
<em>> Water dissolves more ionic compounds.</em> 

<em />Water is a polar molecule because of its uneven distribution of electron density. It is made up of two hydrogen atoms and one positive atom.
Since water is a polar molecule, it forms hydrogen bonds with other polar molecules. Though these bonds are relatively weak, however, there are so many of them present in water. 
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<em>INCORRECT </em>
> Liquid water is less dense than water vapor. - Liquid water has a higher density than water vapor. The fact that water vapor rises indicates that it is less dense than water.

>Water dissolves more hydrophobic substances. - Hydrophobic substances do not dissolve easily in water. It is termed as 'hydrophobic" because it means water-fearing. 

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3 years ago
What happens to the shell of an egg when placed in vinegar?
Murrr4er [49]

you can put a needle through it and it won't break.

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