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kirill115 [55]
3 years ago
6

What information about the structure of DNA was obtained from X-ray crystallographic data?

Biology
1 answer:
Ivenika [448]3 years ago
6 0

Answer:

With the crystallographic data you can obtain the space between the base paris on the DNA, yo can also predict that the DNA have a double helix structure, and with this information and some chemical simulations you can obtain the exact amount of nucleotides in each turn.

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erma4kov [3.2K]
Pure water is very close to a pH of 7. The Great Salt Lake (from what I've read about) can range from 8.2 to 7.7 in different areas. Saliva is between 6.5 and 7.5. And ammonia has a pH of 11.
So the items that have a pH between 5 and 8 are pure water, saliva, and possibly the Great Salt Lake.
5 0
3 years ago
Agricultural lands frequently require nutrient augmentation because
fenix001 [56]

The given is incomplete as the options are missing. The correct options for the given question are as follows-

(A) cultivation of agricultural land inhibits the decomposition of organic matter

(B) nitrogen-fixing bacteria are not as plentiful in agricultural soils because of the use of pesticides

(C) land that is available for agriculture tends to be nutrient-poor

(D) the nutrients that become the biomass of plants are not cycled back to the soil on lands where they are harvested

Answer:

Option (D)

Explanation:

In order to carry out agricultural practices, the soil must be rich in essential nutrients for the growth of crops. The soil fertility is a key role in the production of crops.

This agricultural land often requires a large amount of these nutrients and minerals because some of the nutrient minerals are converted into plant biomass which is then used up to produce energy in other sectors. So, the nutrients that were present in the soil are taken away and not transferred back into the soil. This means that the nutrient cycle gets affected. Due to this reason, there requires a constant supply of nutrients into the agricultural fields.

Thus, the correct answer is option (D).

8 0
3 years ago
A cell with a diploid number of 24 undergoes MITOSIS, how many chromosomes are in each daughter cell?
GalinKa [24]

Answer:12.

Containing two complete sets of chromosomes, one from each parent.

Explanation:   Once mitosis is complete, the cell has two groups of 46 chromosomes, each enclosed with their own nuclear membrane. The cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.

4 0
3 years ago
Read 2 more answers
If a farmer wants to increase the health of his crops, he could apply a nitrogen-based fertilizer. Why is nitrogen important to
oksian1 [2.3K]
D proteins and enzymes
7 0
3 years ago
Read 2 more answers
Avoiding bias, increases reliability and is important to experimental data. A scientist is investigating the cause of contaminat
lys-0071 [83]

Answer:

A. Resident 1

Explanation:

the answer is resident one because they have no personal connection to the gas station but the other residents do. This leaves them unbiased to the situation

7 0
3 years ago
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