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skelet666 [1.2K]
2 years ago
12

Although both br3- and i3- ions are known, the f3- ion has not been observed. explain.

Biology
1 answer:
Sliva [168]2 years ago
4 0
Fluorine, iodine and bromine are all in the same group. Fluorine been the first element in the group has less number of electron orbitals compare with bromine and iodine. Bromine and iodine has D orbitals which can take part in their bonding activities, this allows the elements to bond in a variety of ways, but fluorine does not have the D orbital and therefore is limited in its ion formation. <span />
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Because of the evaporated particles that mix with the air molecules and then our sense of smell tells us what's cooking.
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Griffiths (1928) mixed heat-killed ‘s' bacteria with ‘r' bacteria and injected a mouse with both types of bacteria. as a result,
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The surviving R strain transformed into a living S strain.
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2 years ago
A fly has two alleles for the color of its eyes. The green allele is recessive, and is represented by q. The blue allele is domi
murzikaleks [220]

Answer:

p = 0.34

Explanation:

The green allele is recessive, meaning two copies of q (qq) are required to be green. Conversely, animals that are either pp or pq will be blue.

If 44 organisms are green, that means 44 are qq.

For genotype frequencies, the equation is:

homozygous dominant genotype + heterozygous + homozygous recessive = 100%

Which is denoted as

p² + 2pq + q² = 1

We know that q² = 44/100 = 0.44

To work out q, we can do \sqrt{0.44} = 0.66

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p + q =1

We know that q= 0.66

So p = 0.34, because 0.66 + 0.34 = 1

7 0
2 years ago
Stem cells renew tissues but are all lost in childhood.a) trueb) false
ValentinkaMS [17]

Answer:

False

Explanation:

Stem cells are different type of cells in human body that can develop into different other body cells like muscles cells or brain cells and they gave the capability to renew themselves through mitotic cell division.

Stem cells are not lost in childhood but can be use to treat diseases or infection, it can be use to grow new cells and replace damaged body cells.

4 0
2 years ago
The cell cycle what controls the life and development of a cell answers
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