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hodyreva [135]
3 years ago
12

Positively charged sodium ions transport electrical impulses in the nervous system. Which subatomic particle does sodium lose to

attain a positive charge?
Biology
1 answer:
Stells [14]3 years ago
7 0
Electron. Hope this helps! :)
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If you cry a lot, would you eventually go blind?
Maslowich

Answer:

No, you would not go blind, even though the composition of emotional tears are different.

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The practice of leaving crop residue on the field between plantings to help prevent soil erosion is known as
Advocard [28]

The practice of leaving crop residues on the field in between planting seasons is known as conservation tillage.

<h3>Conservation tillage</h3>

Some soils are prone to erosion once they are directly exposed to the impact of precipitation.

After harvesting crops from a field, the crop residues are left on the field to prevent the direct impact of precipitation in cause erosion. The crop residue, in addition, adds to the organic matter of the soil after their decomposition.

Such a practice is known as conservation tillage.

More on conservation tillage can be found here: brainly.com/question/14575699

#SPJ3

4 0
2 years ago
Why (DNA) that i distracted from the strawberry doesn't look like double helix
Leno4ka [110]
This was because one cannot view a single strain of DNA as it is too small for one to visually comprehend.
4 0
3 years ago
Explain the difference between using dna profiles to determine paternity and to match a tissue sample with a suspect
Dmitry [639]
Each person has a unique DNA profile. To determine paternity, only a very limited amount of tissue is used to match the DNA profile of the potential father to that of the child. The genetic test performed to determine whether a tissue sample belongs to a specific suspect needs a more extended tissue sample.
8 0
3 years ago
A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 4 picograms of DNA
damaskus [11]

Answer:

b: 8;8

Explanation:

Mitotic or meiotic cell division constitute the m phase of the cell cycle. At the end of the m phase, the new cells enter the interphase stage of the cell cycle. The interphase is further sub-divided into;

  • <em>the G_0 phase,</em>
  • <em>the G_1 phase,</em>
  • <em>the S phase; and</em>
  • <em>the G_2 phase</em>.

The G_0 phase is essentially a resting phase. Cells that do not need to divide except when necessary move into this phase after exiting the m phase.

Actively dividing cells enter the G_1 phase after exiting the m phase. Cell development and growth takes place. From there, the cells enter the S phase where DNA replication/synthesis takes place. The cells then enter the G_2 phase where proteins are synthesized in preparation for division or m phase.

At the S phase, the amount of DNA a cell carries is doubled but the chromosome number remains the same. For example, if a cell enters the S phase with 2 g of DNA containing 10 chromosomes, at the end of S phase, the amount of DNA would have come 4 g while the number of chromosomes will remain 10.

Hence, if the average amount of DNA in the assayed cells immediately after mitosis is 4 picograms, the amount would be 8 picograms at the end of S phase and will still remains 8 picograms at the end of G_2 phase.

The correct option is b.

8 0
3 years ago
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