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Sidana [21]
2 years ago
9

Name specific biotic and abiotic factors in terrestrial ecosystems that are related in aquatic ecosystems? Use evidence to suppo

rt your answer.
please I need to submit this tonight ​
Biology
1 answer:
Gekata [30.6K]2 years ago
8 0
Biotic- living abiotic- non living
Biotic: sharks, corals, seaweed
Abiotic: water, the temperature of the water
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What was known before Franklin and Wilkins conducted their studies of DNA? Check all that apply. DNA is found in the nucleus of
kvasek [131]

Answer:

The correct answer will be-

   1. DNA is found in the nucleus of a cell

    2. Organisms store and transmit genetic information

    3. Cells contain protein molecules.

Explanation:

The study of DNA started much before the discoveries of Rosalind Franklin and Maurice Wilkins.

Nucleus of cell was discovered by Robert Brown in 1831 but the material present inside the nucleus called "nuclein" (DNA) came from the studies of Johann Friedrich Miescher in 1869.

Proteins as a constituent of cell were discovered by the experimental analysis of Gerhardus Johannes Mulder in 1837.

DNA as a genetic material came from the experimental studies of Frederick Griffith in 1928, Oswald Avery, Maclyn McCarty, and Colin MacLeod in 1944, and Hershey and Chase in 1952.

Franklin and Maurice Wilkins are known for their work on the the structure of DNA as they were able to produce high-resolution X-ray photographs of DNA fibres called Photo 51 in 1952 using X-ray diffraction technique. By 1953 Franklin concluded concluded that DNA shows helical structure with phosphates on outer side.

Thus, 1. DNA is found in the nucleus of a cell

         2. Organisms store and transmit genetic information

         3. Cells contain protein molecules.

             are the correct options.

8 0
3 years ago
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To replace burned skin doctor can successfully transplants replacement skin taken from another part of body of the burn victim.w
Tanzania [10]
That are the statements
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3 years ago
Some proteins that are on the surface of mammalian cells contain carbohydrates. these proteins are synthesized by _______ and th
goldenfox [79]
Genarte cells extended engery blood
7 0
3 years ago
10. Researchers observe a large population of birds on a remote island. Birds in the population are found to have either red cre
IgorLugansk [536]
Suppose that the proportion of the white crest alleles (r) is given by w and that of the Red crest allele (R) is given by p. We have that p+w=1. The probability that an individual has 2 r alleles is given by w*w since for each allele position the probability is w. Only these individuals have a White phenotype. Hence, we get that w^2=\frac{1759}{1759+11088}; the right hand side is the proportion of white birds in the total population. Doing the calculations, this yields that w=0.37. From this, we calculate that p=0.63. The possible ways we have heterozygous individuals are the combinations Rr and rR. The probability for each of those is p*w. Thus, the total probability is 2pw. This is equal to 0.466=0.47. This is the fraction of the future population that is going to be heterozygous assuming the conditions of the Handy-Weinberg equilibrium like random reproductive matching etc.
7 0
3 years ago
50 POINTS
lapo4ka [179]

City-state government was often conquered because they did not have enough resources to protect themselves

Explanation:

A city-state government is an independent autonomic political system which usually compromises just a single independent city which is governed by itself with sovereignty over its territory. The city-states like Greece, Italy, and Rome etc became very powerful.

The main reason for these city-states being conquered more was the accumulation of wealth and aristocracy in such states.

Heavy taxes, religion, slavery also lead to social unrest and conflicts among these city-states which made them weaker.  These internal conflicts also made them lose their resources and vulnerable to be conquered by other powerful empires.

With the increasing power of neighboring states, like in the case of Rome and Greece, the Romans became mightier than Greeks at one point and conquered the Greek city-states.

6 0
3 years ago
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