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
grandymaker [24]
3 years ago
7

For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to

label nitrogen of the DNA, rather than the phosphate. They reasoned that each nucleotide has only one phosphate and two to five nitrogens. Thus, labeling nitrogens would provide a stronger signal than labeling phosphate Why won't this work?
A) There is no radioactive isotope of nitrogen
B) Radioactive nitrogen has a half-life of 100,000 years, and the material would be too dangerous for too long
C) Avery, MacCloud and McCarty already did this
D) Although their are more nitrogens in a nucletotide, labeled phosphates actually have 16 extra neutrons; t Shift Ctrl herefore, they are more radioactive
E) Amino acids (and thus and proteins proteins) also have nitrogen atoms;
Biology
1 answer:
posledela3 years ago
7 0

Answer:

The correct answer will be option-E

Explanation:

Hershey and Chase's experiment was performed to test whether DNA serves as the genetic material or protein.

To perform experiment they grew bacteriophage into radiolabeled phosphorus and sulfur compounds. The phosphorus is an integral part of the structure of DNA whereas proteins contain sulfur in their structure.  

In the given condition if radiolabeled nitrogen is utilized then the experiment will fail as the structure of proteins also contains an amino group( NH₂) in their structure as well as DNA. The scientist will not be able to identify whether the DNA is the genetic material or protein.

Thus, option-E is the correct answer.

You might be interested in
1. Why does a change in the structure of a protein matter?
irina1246 [14]

Answer:

B. a mutation to the mRNA transcribed from it

8 0
3 years ago
The living organism found within an ecosystem
Murljashka [212]

Answer:

The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants The third type of living organism in an ecosystem is the decomposers.

Explanation:

no

8 0
3 years ago
Find the quotient. 6,588 = 27 *<br> Your<br> answer
vesna_86 [32]

Answer: 244

Explanation: im built different

3 0
3 years ago
Which is the role of restriction enzymes?
dezoksy [38]
Restriction enzymes and or restriction endonucleases are involved at recognizing specific sequence of nucleotides and cutting or splicing them at appropriate regions to produce fragments that can either be sticky ends or blunt ends depending on where they cut and the nature of nucleotides involved within the fragments. They play an important role in genetic engineering, as geneticists can use them for placing into extra chromosomal information and or content of plasmids in certain bacteria, from other sources, for instance antibiotics, grow and or produce many individual colonies of bacteria, isolate them and one would have many sequences for instance that can code for an antibiotic that can be extracted and used further. Assuming the bacteria's plasmid can take in that sequence.
4 0
3 years ago
Read 2 more answers
if you control smear does not show gram-positive cocci and gram-negative rods, can you assume that the gram-stain reaction of yo
polet [3.4K]
No. At that point, you need to determine if the problem lies in the control or the staining reagents or techniques.
6 0
3 years ago
Other questions:
  • How does the paradise flycatcher protect its young from predators? It wraps its wings around its chicks. It puffs out its feathe
    6·2 answers
  • The metaphyses of a 40-year-old's long bones have?
    10·1 answer
  • A couple in their mid-30s are at their primary care provider's office because they have been unable to conceive for 3 years. The
    13·1 answer
  • What compounds contain carbon ?
    9·1 answer
  • India is a mega Diversity Nation
    14·1 answer
  • Healthy ecosystems depend on–
    11·2 answers
  • I neeed helppppppp <br><br> Chemical Weathering 5 facts about it
    12·1 answer
  • Between water, plant, air,sun which is the most important and without which one can die​
    10·1 answer
  • Which type of statement proves a possible answer to a scientific question based on scientific knowledge
    15·1 answer
  • Which of the following is a characteristic that all prokaryotic cells and eukaryotic cells share?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!