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Andrew [12]
3 years ago
12

Examine the following scenario:

Biology
1 answer:
Veronika [31]3 years ago
4 0
3- mutation, natural selection, migration
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hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support
Gwar [14]

Hi,

Harshey and Chase did a great experimentation which was basically a two step experiment to prove that DNA and not proteins are the actual carriers of genetic information from parents to offspring.

  • In the first part of their experiment, they used bacteriophages (virus that eat bacteria). They used radioactively labeled sulphur(35S) medium to grow bacteriophages and observed that all the bacteriophages had proteins with radioactive sulphur(35S).
  • In the next step they allowed these phages to infect bacteria and to their surprise, they found that the bacteria did not had radioactively labeled sulphur in them because the coat of bacteriophage stays outside the body of bacteria when it attacks it. This proved that DNA not proteins were the hereditary material.
  • To make their results more reliable, they did a second experimentation in which, they marked the DNA of the phage with radioactive phosphorus 32P. After labeling DNA, they repeated the same experiment and this time, they found radioactive phosphorus inside the bacteria.

<em>This meant that the bacteria had DNA of phage entered inside them and this again proved that DNA not proteins are the hereditary material. You can see attached image for better understanding. </em>

Hope it help!


7 0
3 years ago
In your own words, how does the cost of making biofuel from microalgae compare to the cost of making fossil fuels?
tekilochka [14]

Answer:

Biofuels like fuel from microalgae are very costly as compared to fossil fuels.

Explanation:

The cost of biofuels is too high as compared to that of fossil fuel. For instance,

the cost of 1 gallon of algal fuel is $32.81 per gallon while cost of diesel is $2.9 -3.2 per gallon.

However, biofuels are very environment friendly as compared to that of fossil fuels.

7 0
2 years ago
How are DNA and cellular reproduction linked in the process of inheritance?
Sunny_sXe [5.5K]
Inheritance is the process by which traits are passed from the parents to their offspring. The basic unit of inheritance in human is the DNA. For traits  to be passed from the parent to the offspring, the DNA in the cell must be duplicated and this happens through the process of cellular reproduction.
8 0
3 years ago
Compare how people are affected by an Air Quality Index of 140 with how they would be affected by an Air Quality Index of 170.
AfilCa [17]

Answer:

The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality.

Explanation:

#need any queshtions answered emidiatly- text me and I got you on pro mo speed

_we all have those times where we need those answers right away.

4 0
3 years ago
Which of the following is the best example of an organism maintaining homeostasis?
ANEK [815]
The answer is <span>A. A lion panting after a chase.</span>
7 0
3 years ago
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