1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veseljchak [2.6K]
3 years ago
15

Please help me write a portfolio. GIVING BRAINLIEST 50 POINTS

Chemistry
2 answers:
docker41 [41]3 years ago
7 0

Answer:

Rosalind Elsie Franklin (25 July 1920 – 16 April 1958)was a British biophysicist and X-ray crystallographer who made critical contributions to the understanding of the fine molecular structures of DNA, RNA, viruses, coal and graphite. The DNA work achieved the most fame because DNA (deoxyribonucleic acid) plays essential roles in cell metabolism and genetics, and the discovery of its structure helped scientists understand how genetic information is passed from parents to children.

rosalindfranklin

Franklin is best known for her work on the X-ray diffraction images of DNA which led to discovery of DNA double helix. Her data, according to Francis Crick, was "the data we actually used" to formulate Crick and Watson's 1953 hypothesis regarding the structure of DNA.Franklin's X-ray diffraction image confirming the helical structure of DNA were shown to Watson without her approval or knowledge. Though this image and her accurate interpretation of the data provided valuable insight into the DNA structure, Franklin's scientific contributions to the discovery of the double helix are often overlooked. Unpublished drafts of her papers (written just as she was arranging to leave King's College London) show that she had independently determined the overall B-form of the DNA helix and the location of the phosphate groups on the outside of the structure. However, her work was published third, in the series of three DNA Nature articles, led by the paper of Watson and Crick which only hinted at her contribution to their hypothesis.

After finishing her portion of the DNA work, Franklin led pioneering work on the tobacco mosaic and polio viruses. She died in 1958 at the age of 37 from complications arising from ovarian cancer.

HOPE THIS HELPS!!!

charle [14.2K]3 years ago
7 0

here ya go!

Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) was a British biophysicist and X-ray crystallographer who made significant contributions to the study of DNA, RNA, viruses, coal, and graphite tiny molecular structures. The discovery of the structure of DNA (deoxyribonucleic acid) helped scientists understand how genetic information is passed from parents to children. DNA (deoxyribonucleic acid) plays essential roles in cell metabolism and genetics, and the discovery of its structure helped scientists understand how genetic information is passed from parents to children.

Rosalind franklin

Franklin is most known for her work on DNA X-ray diffraction pictures, which resulted in the discovery of the DNA double helix. According to Francis Crick, her data was "the data we used" for the study.

Franklin performed groundbreaking work on the tobacco mosaic and polioviruses after completing half of the DNA work. She died in 1958, at the age of 37, from ovarian cancer complications.

                   Articles

Article from

Rosalind Franklin was so much more than the 'wronged ...

https://www.nature.com:  As one of the twentieth century’s pre-eminent scientists, Franklin’s work has benefited all of humanity. The one-hundredth anniversary of her birth this month is prompting much reflection on her career and research contributions, not least Franklin’s catalytic role in unraveling the structure of DNA. (Which is the second paragraph in the link)- Published July-21-2020.

You might be interested in
An emulsifying agent is typically characterized by having
pochemuha

The third substance or agent which produce the film between the interface of two immiscible liquids and thus stabilize the system are known as an emulsifying agent.

Since the solubility of the liquids depends on the polarity of the mixing liquids the thumb rule of solubility is like dissolves like that means polar liquid dissolves in polar liquid only and vice versa. For two immiscible liquids, the emulsifying agent is used which does not chemically change the polarity of liquids but acts as bridge between immiscible liquids, the polar end of the emulsifier attach to the polar liquid and the non-polar end of the emulsifier attach to the non-polar end and thus help in dissolving.

Therefore, the one end of the emulsifier is polar and the other end is non-polar

5 0
3 years ago
In the event that you are exposed to infectious materials by being accidentally stuck with a used needle, you should report it t
monitta

The answer is Option B , Wash with soap and water.

That is when you are exposed to infectious materials by being accidentally stuck with a used needle , first thing that needs to be done is that wash with soap and water.

When someone used a needle, viruses in their blood, such as hepatitis B or HIV may contaminate it , so it is required to avoid these bacteria when you are exposed to infectious materials by being accidentally stuck with a used needle, wash with soap and water.


7 0
3 years ago
Carbon-14 has a half-life of 5,730 years. If scientists discover a mummified Cro-Magnon specimen, they will first want to determ
ryzh [129]

Answer:

the specimen has 11460 years old

Explanation:

if the live sample has as initial amount of Yo C14, the dead sample will have 0.25Yo of C14.

the rate of decay of radiactive matter over time is

  • Y(t) = Yo * e (( - t * Ln2 ) / T)

∴ Y(t) = 0.25Yo;  T = 5730

⇒ 0.25Yo = Yo * e (( - t * Ln2 ) / 5730 )

⇒ 0.25 = e (( - t * Ln2 ) / 5730 )

⇒ Ln(0.25) = ( -  t * Ln2 ) / 5730

⇒ - 7943.466 = - t * Ln2

⇒ 7943.466 / Ln2 = t

⇒ t = 11460 year

4 0
3 years ago
Which is one factor that scientists use to classify orders of soil?
Komok [63]

Answer:

The scientist classify the types of soil based on the texture of the soil, the type of Rock from which they are formed and the type of organisms which live in the soil. For example red soil is formed by the weathering of reddish type of Rock which is found in that territory.

Explanation: google and me.....hope this helps

4 0
3 years ago
Read 2 more answers
Sxty-D<br><br> 1. What fraction of the elements on the periodic table are metals?
strojnjashka [21]

Answer:

80%

Explanation:

3 0
4 years ago
Other questions:
  • The earth is slightly flattened from a perfect sphere shape because why
    9·1 answer
  • A(n) 816 ml sample of hydrogen was collected over water at 21.0◦c on a day when the barometric pressure was 755 torr. what volum
    14·1 answer
  • Why do strong bonds exist between water molecules? They have nonpolar structure. They are held together by hydrogen bonds. The h
    11·1 answer
  • Using the periodic table, explain the difference between hydrogen, deuterium, and tritium - i.e. hydrogen-1, hydrogen-2, and hyd
    8·1 answer
  • An object's speed is the distance it travels ____ the amount of time it takes
    14·1 answer
  • Don't have a question
    7·1 answer
  • Which electron configuration represents the distribution of electrons in a potassium atom in the ground state?
    14·2 answers
  • Use the periodic table from the lesson to answer the following question.
    6·2 answers
  • Assertion: Gases completely fill the vessel in which they are kept.
    5·1 answer
  • Classify the sentences based on the chemical reactions they describe.<br><br>​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!