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Leto [7]
3 years ago
13

Explain how a crime lab could use paper chromatography to determine if lipstick found at a crime scene matched the lipstick of a

suspect.

Biology
1 answer:
FromTheMoon [43]3 years ago
7 0

Explanation:

The lipstick from the crime would be crushed and dissolved in an appropriate liquid solvent. The lipstick would then be placed in one of the ink spots on the starting / base line of the paper. Another spot would be created for the lipstick with which it is being compared with.

The paper chromatogram would then be placed vertically on a solvent that acts as the mobile phase. After some time, when the solvent reaches the solvent front  of the paper chromatography, by capillary action, the chromatogram can be removed and left to dry.

Bands will have appeared on the chromatography paper formed from the different components of the lipstick. The bands of the lipstick from the crime scene and that with which it is being compared to are observed. If the bands are all aligned, horizontally, then this means it is a complete match. The lipstick must have been the same used at the crime scene.

Learn More:

For more on paper chromatography check out;

brainly.com/question/13232854

brainly.com/question/364792

#LearnWithBrainly

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5. Challenge: A chemical equation is balanced when each side of the equation includes the same number of each type of atom.
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What cause convection currents in the atmosphere?
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Explanation:

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ki77a [65]

Answer:

The statement supported by the description of the process of protein synthesis determined by DNA and its packaging and sorted by the Golgi apparatus is that various organelles within a cell interact with each other to carry out life processes (option D).

Explanation:

From the transcription of RNA from DNA to protein synthesis and its packaging and distribution, the participation of organelles is observed:

  • <em>Cell nucleus</em><em>: contains the DNA and is where the transcription into mRNA occurs. </em>
  • <em>Ribosomes</em><em>: where the mRNA is coupled to produce translation and protein synthesis. </em>
  • <em>Rough endoplasmic reticulum</em><em>: contains ribosomes and participates in the process of membrane protein synthesis, also contributing to their conjugation, glycosylation or sulfonation. </em>
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In this way, the coordination of the functions of various organelles is useful and necessary to fulfill vital functions. The statement that varoius organelles within the cell interact with each other to carry out life processes is, therefore, correct.

<em>The options for this question are:</em>

<em>     A.  Organelles within a cell act independently of each other at all times </em>

<em>     B.  Some organelles are more important than other organelles within a cell. </em>

<em>    C.  Only up to three organelles may interact with each other at any given moment in time. </em>

<em>    D.  </em><u><em>Various organelles within a cell interact with each other to carry out life processes.</em></u>

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3 years ago
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