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katrin [286]
2 years ago
10

How many positive particles does zinc have? *

Biology
1 answer:
GREYUIT [131]2 years ago
5 0

Answer:

30 electrons

30 protons

34 neutrons

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What is added during DNA extraction to lyse cells?
svlad2 [7]

Answer:

There are 3 basic steps involved in DNA extraction, that is, lysis, precipitation and purification. In lysis, the nucleus and the cell are broken open, thus releasing DNA. ... Alcohol (e.g isopropanol or ethanol) is then added, causes precipitation of DNA from the aqueous solution since it does not dissolve in alcohol.

Explanation:

5 0
3 years ago
Blue-eyed mice interbreed and produce progeny with a 2:1 ratio of blue to non-blue. When blue is crossed with nonblue, a 1:1 rat
loris [4]

Explanation:

The results are explained if the trait blue eyes is dominant (B) over non-blue (b) and the dominant allele B is lethal in homozygous individuals.

<u>The possible genotypes and phenotypes are:</u>

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When blue (Bb) is crossed with non-blue (bb) the resulting offspring is 1/2 blue (Bb) and 1/2 non-blue (bb).

When non-blues interbreed (bb X bb) all progeny is non-blue (bb).

4 0
3 years ago
An important difference between cellular respiration and photosynthesis is that when cellular respiration begins, glucose molecu
sergey [27]
The answer is water molecules are split.

Cellular respiration and photosynthesis are complement reactions to each other. These are reverse reactions. In cellular respiration glucose and oxygen yield water and carbon dioxide. So, when respiration begins, glucose molecules are split. In the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. Thus, <span>when respiration begins, water molecules are split.</span>
7 0
3 years ago
How can both surface and underground mining affect miners' health? Select the two correct answers.
ale4655 [162]

Answer:

I believe options <u>A. (risk of lung disease, like silicosis)</u> and<u> </u><u>B. (risk of high blood pressure)</u><u> </u>are correct.

Explanation:  

The majority of miners will or suffer from various respiratory diseases. Some of the common diseases include; asbestosis, <u>silicosis</u>, black lung disease.

Hope I could help! :)

6 0
3 years ago
Read 2 more answers
Please I need help with questions 64 and 65 and it’s very hard and I’m struggling with it and if you need to see the picture big
Lelechka [254]
64. Greenhouse Gases, specifically Carbon Dioxide.

65. Change in seas level (rising sea level) will occur.
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