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pochemuha
3 years ago
7

Nitrogen is one of the important elements for life. Nitrogen is present in DNA and proteins. It’s also a component of 1.water 2.

chlorophyll or 3.air in plants, a pigment that’s critical for photosynthesis. Although nitrogen is present in the air, it can’t be consumed directly. It’s converted into usable form by 1. bacteria 2.animals or 3.plants .
Biology
2 answers:
Leni [432]3 years ago
8 0
The first one is air and the second is bacteria
natulia [17]3 years ago
8 0

Answer: first : Chlorophyll

Second : bacteria

Explanation: Nitrogen is vital component of chlorophyll, that plants use to trap sunlight to produce sugar from the elements like water and carbon dioxide by photosynthesis.

Nitrogen is also present in the proteins that is used by the plants. Without proteins, plant would die.

Although nitrogen is present in atmosphere plants cannot use it until it is converted by the bacteria in a usable form.

Plants do not utilize nitrogen in the form of nitrogen gas it has to be first converted by the bacteria in the from of nitrates.

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hodyreva [135]

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3 years ago
What has prokaryotic cells?<br> Onion root<br> Cows liver or<br> Human blood
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None of them.

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4 years ago
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If someone with auburn hair has children with someone with red hair (but whose mother had black hair ) what are the genotype and
tensa zangetsu [6.8K]

The phenotype is - 75 % red and 25 %brown.

The genotype is hRhR - 25%

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<h3><u>Explanation:</u></h3>

The cross given here is a simple dominant - recessive relationship between the three types of alleles of hair colour. The genes of this characteristics are present in autosomes, so will be segregated equally among all the sexes of the offsprings.

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So, the probable combinations are hBrhBk, hBrhR and hBkhR.

The frequency of the combinations are 25%, 25% and 50% respectively.

The phenotypic ratio will be red : brown as 3:1.

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