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Andrei [34K]
2 years ago
14

Scientists study small pockets of air trapped deep within frozen glaciers. what are scientists trying to understand about the cl

imate of earth by analyzing these ice samples?
Biology
1 answer:
guapka [62]2 years ago
7 0
What <span>scientists are trying to understand about the climate of earth by analyzing these ice samples is changes in atmospheric gas composition.
By examining small pockets of air trapped deep within frozen glaciers, these scientists want to see whether or not, or how gas composition within these glaciers changes and how it affects the atmosphere that surrounds our planet. 
</span>
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In order to make new nucleic acids your body needs food that contains carbon, hydrogen, and oxygen as well as
sweet-ann [11.9K]

The correct answer is option D, that is, nitrogen and phosphorus.  

Nucleic acids refer to the macromolecules comprising oxygen, hydrogen, phosphorus, and carbon. They are the small biomolecules or the biopolymers, playing an essential role in all the known forms of life.  

They comprise nucleotides that are the monomers formed of three constituents, that is, a 5-carbon sugar, a nitrogenous base, and a phosphate group. If the sugar is obtained from ribose as deoxyribose, then the polymer is DNA, and if the sugar is a compound ribose, then the polymer is RNA.  


5 0
2 years ago
The central vacuoles of some plant cells you are studying fill with water and press the cell contents against their cell walls b
beks73 [17]

Answer:

The correct answers to the question are:

  • The concentration of solute bathing the inner side of the plant cell membrane should be high.
  • The concentration of solute bathing the outer side of the plant cell membrane should be low.

Explanation:

  • Turgidity can be defined as a condition in which the cell membrane of the plants cells becomes completely extended as a result of which it pushes tightly against the cell wall.
  • This happens when the cell takes up water from its environment and stores it in the vacuoles.
  • Water enters to the inside of the cell by the process of Osmosis.
  • Osmosis can be defined as the process by which molecules tend to move or diffuse from a region where its concentration is high to another region where its concentration is low, provided the two regions are separated by a semi-permeable membrane.
  • In any region, the concentration of solute and and concentration of solvent  bears an inverse relationship. This means that the region where the solute concentration is high, the solvent concentration is low and where the solute concentration is low, the solvent concentration is high.
  • In the given question, as the cell takes up water from the surrounding into its vacuole to become turgid, so by the concept of osmosis, the concentration of water must have been high outside the cell and low inside the cell.
  • Again by the inverse concentration concept of solute and solvent, the concentration of solute inside the cell should be more than the concentration of solute outside the cell.
3 0
2 years ago
Use this model of a eukaryotic transcript to answer the following question. E = exon and I = intron 5' UTR E1 I1 E2 I2 E3 I3 E4
sveticcg [70]

Answer:

<h2>5' UTR E1 E2 E3 E4 UTR 3'</h2>

Explanation:

During RNA splicing, introns are removed and exons are joined tp each other to form  a mature mRNA and this RNA moves to cytosol.. So 5' UTR , UTR 3' and all exons are joined together.

All introns are removed and exons are joind during RNA splicing process.

So the final mRNA is 5' UTR E1 E2 E3 E4 UTR 3'.

8 0
2 years ago
Which of the following statements is CORRECT regarding studies of character
pishuonlain [190]

Answer:

Explanation:

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. How can the student demonstrate the theory of endosymbiosis using the models?

5 0
2 years ago
Gene duplication and divergence is thought to have plated a critical role in the evolution of increased bilogical complexity
LUCKY_DIMON [66]
A. true is the answer
5 0
2 years ago
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