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Anon25 [30]
3 years ago
15

A man is suffering from aids then write any two ways in whicg he could have got this disease.

Biology
1 answer:
bonufazy [111]3 years ago
8 0

Answer:

HIV is the correct answer

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DNA____.
Luden [163]

The answer for this question is C, I just did my final for Biology and got a good score in it.

Hope it helps!

7 0
4 years ago
What type of candy is earths mantle most like?
professor190 [17]

Answer:

Ice cream , peanut butter or melted marshmallows with puffed rice- cereal

Explanation:

can all work for the mantle layer of your project. Push a hard candy representing both the inner core and outer core into a ball of ice cream, or spoon a layer of ice cream into a clear plastic cup over the top of the inner and outer core.

Hope it helps

5 0
2 years ago
Which element IS found in proteins, but NOT found in carbohydrates?
Licemer1 [7]
Hi there.

I think the answer to your question is: nitrogen.

Nitrogen is found in proteins, but not carbs.

~
5 0
3 years ago
1. Key Concept List the
Ipatiy [6.2K]
<h2>DNA </h2>

Explanation:    

1) Experiment done by Griffith:

  • Griffith used two related strains of bacteria, known as R and S
  • R bacteria were nonvirulent, meaning that they did not cause sickness when injected into a mouse whereas mice injected with live S bacteria developed pneumonia and died
  • Griffith tried injecting mice with heat-killed S bacteria (that is, S bacteria that had been heated to high temperatures, causing the cells to die), the heat-killed S bacteria did not cause disease in mice
  • When harmless R bacteria were combined with harmless heat-killed S bacteria and injected into a mouse, not only did the mouse developed disease and died, but when Griffith took a blood sample from the dead mouse, he found that it contained living S bacteria
  • Griffith concluded that the R-strain bacteria must have taken up what he called a transforming principle from the heat-killed S bacteria, which allowed them to transform into smooth-coated bacteria and become virulent

2) Experiment done by Avery:

  • Avery, McCarty and MacLeod set out to identify Griffith's transforming principle
  • They began with large cultures of heat-killed S cells and, through a long series of biochemical steps progressively purified the transforming principle by washing away, separating out, or enzymatically destroying the other cellular components
  • These results all pointed to DNA as the likely transforming principle but Avery was cautious in interpreting his results
  • He realized that it was still possible that some contaminating substance present in small amounts, not DNA, was the actual transforming principle

3) Experiment done by Hershey and Chase:

  • Hershey and Chase studied bacteriophage, or viruses that attack bacteria
  • The phages they used were simple particles composed of protein and DNA, with the outer structures made of protein and the inner core consisting of DNA
  • Hershey and Chase concluded that DNA, not protein, was injected into host cells and made up the genetic material of the phage

8 0
3 years ago
What evidence places fish as the first vertebrates​
Whitepunk [10]

Answer:

Fossils

Explanation:

7 0
4 years ago
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