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ratelena [41]
1 year ago
12

Imagine you are a detective examining a crime scene. You are trying to identify the person who committed the crime, so you colle

ct many samples at the crime scene. Which sample would be most useful in identifying the person who committed the crime?
Biology
2 answers:
stepan [7]1 year ago
7 0

Answer:

The sample most useful in identifying the person who committed the crime will be fingerprint. Fingerprints are the impression of finger ridges left on the surface of an entity or area in a crime scene. No two individuals can have same fingerprints. No two fingers of a same individual can produce same fingerprint. These are not found to be similar in identical twins. Fingerprints can be collected from porous and non--porous surfaces. These can be collected easily from crime scene. These fingerprints can be matched with specimens obtained from victims or offenders in order to establish the identity. The physical fingerprint analysis is more superior than DNA fingerprinting as in DNA fingerprinting the results obtained from twins could be similar but physical fingerprints cannot be similar because of different ridge characteristics. Therefore, valuable technique for identification of person who committed the crime.

torisob [31]1 year ago
6 0

Id say fingerprints would be the most useful sample to identifying the person who committed the crime

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The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this?
Serjik [45]

Answer:

Degeneracy

Explanation:

  • There are 4 nucleotide  bases and they can form a lot of different codons -  about 64 different codons
  • There are only 20/21 amino acids, not enough for each of the codons

As a result, codons have to "double up" and share amino acids because there is only a limited number of these that they can code for  

3 0
2 years ago
Compare a bacterial cell and a human body cell. Include in your response
shepuryov [24]

Answer:

Differences: Size

Similarities:  Organelles

Explanation:

The most important difference is size. The volume of a typical human cell is 4,000 times more than the volume of a typical bacterial cell. Today's bacterial cells are direct descendants of the prokaryotic cells found in rocks that were formed one billion years after Earth.

Organelles are the biggest difference between bacteria and cells that make up the human body. An organelle is a tiny cellular structure that performs specific functions within a cell. Organelles are embedded within the cytoplasm of eukaryotic and prokaryotic cells. In the more complex eukaryotic cells, organelles are often enclosed by their own membrane

5 0
1 year ago
Pros and cons of canopy fogging
pishuonlain [190]

Pros:

It is (mostly) based on pyrethrine spray which kills the insects rapidly.

It not poisonous to other animals.

It uses synthetic, natural spray which is safe to use because it breaks down within 10 minutes.

Te technique can reach tall forests.

It can be used in closed spaces ( greenhouses, basements etc).

 

Cons:

It requires windless circumstances ( which is mostly at nights).

Breathing fog may cause respiratory and throat irritation to some.

 

5 0
2 years ago
A constant used in an equation for gravity is 0.0000000000667. What is theis represented as a number in proper scientific notati
xxTIMURxx [149]

The correct answer is - C) 667 x 10-13.

The constant that is used in the equation for gravity, or rather gravitational pull, is 0.0000000000667. This same number, in proper scientific notation goes in the shape of 667 x 10-13.

The reason for that is very simple. Any number multiplied with 10-13 will give the exact same number, but as the last part of 13 decimal number. The -13 part dictates the number of decimals. So in the case of 0.0000000000667, the last part 667 is the number that is multiplied, but because the multiplying is in minus, the number goes on the back of the number. Since it has three numbers in it, ten zeros are added in front of it, in order to get the 13 decimals.

7 0
2 years ago
B. Eggs are known to contain cholesterol, which is a lipid. Did your experiment results indicate a presence of lipids in the alb
Darya [45]

Answer:

According to the result recorded, there was no cholesterol in the albumin solution. This is probably because the cholesterol is in the egg yolk and not the egg white. In order to get a positive response on the presence of cholesterol in eggs, an egg yolk albumin stock needs to be prepared. So using the same procedure as before and only replacing the egg yolk for the egg white, prepare a 0.5 mL of egg yolk with 4.5 mL distilled water mixture in a test tube. Follow the steps given in the lab manual to check for presence of lipids in this albumin stock. Take a filter paper and add one drop of Sudan III solution onto it, let it dry and then place a drop of the stock prepared and analyze if the color transfer happens.

Hope that answers the question, have a great day!

3 0
2 years ago
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