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fgiga [73]
3 years ago
7

Describe the contributions made by James Watson and Francis Crick and Rosalind Franklin and Maurice Wilkins to the discovery of

the structure of DNA
Biology
1 answer:
HACTEHA [7]3 years ago
6 0
Francis Crick: helped in the development of helical diffraction theory which was helpful in the understanding of the structure of dna, he also worked with James Watson in discoveries the double helix structure of dna. He also demonstrated that a group of three nucleotide bases on a single dna strand code for one specific amino acid.

Rosalind Franklin: using the x- ray diffraction created images of dna, which was later used by Watson and crick to determine the structure of dna.

James Watson: he helped deduce the structure of dna, along with crick.

Maurice Wilkins: it was his idea to use X-ray crystallography techniques to study dna.
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how is it possible that when you look at the night shy you may be looking at stars from millions of years ago
kolbaska11 [484]

Answer:

this is beacuse stars are always in the sky

Explanation:

stars are always in the sky they are in the sky we just cant see it through our naked eye.. Also, while those super-massive stars will die suddenly as supernovae, most stars experience much slower deaths taking hundreds of thousands or millions of years to play out. Examples of famous stars already in the act of dying include Arcturus and Aldebaran.

3 0
3 years ago
Pancreatic cells, which secrete a large amount of digestive enzymes, are labeled with radioactive leucine and then chased for se
LiRa [457]

Answer:

Option-C

Explanation:

A pulse-chase experiment which is used to study the cellular process taking place in the cells. This uses the labelled molecule which is incorporated into the cellular pathway and then the unlabeled molecules are used over time to determine how much time is required by the unlabeled molecule to replace the labelled molecule.

In the given question, the pancreatic cell which secretes the digestive enzyme known as the acinar cell is labelled with the leucine and then used unlabeled leucine.

When observed after three hours, the black spots will appear on the exterior of the cell as the protein has been synthesised by the ER and now has been secreted from the cell.

Thus, Option-C is the correct answer.

5 0
3 years ago
Which term describes the release of eggs from the ovary?
Step2247 [10]
Ovulation is the process in which eggs are released from the ovary.
6 0
3 years ago
Read 2 more answers
A daughter cell that matures to the inside of the vascular cambium becomes ______, and a daughter cell that matures to the outsi
melomori [17]

A daughter cell that matures to the inside of the vascular cambium becomes<u> secondary xylem</u> and a daughter cell that matures to the outside of the vascular cambium becomes <u>secondary phloem.</u>

<u />

  • The cambium divides its cells to create secondary xylem and phloem. As secondary phloem and xylem tissue builds up, the stem becomes thicker and develops wood and bark.
  • The kind of xylem produced by secondary growth is known as secondary xylem. In contrast, during primary growth, the primary xylem develops.
  • As a result, lateral growth, as opposed to vertical growth, is connected with the secondary xylem, as opposed to the primary xylem.
  • The procambium, which is found between the xylem axis and the phloem pole, develops into the cambium in the root.
  • A pattern resembling the arrangement of secondary stem is produced when xylem forms in the core and phloem on the perimeter of secondary development.

learn more about vascular cambium here: brainly.com/question/859907

#SPJ4

5 0
2 years ago
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Which term describes the process by which light passes through an object or a medium
slava [35]
I believe the answer would be transmission.


6 0
3 years ago
Read 2 more answers
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