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Vlada [557]
3 years ago
15

What is a radical in biology?

Biology
2 answers:
trasher [3.6K]3 years ago
8 0

Answer:

molecule that contains at least one unpaired electron

rosijanka [135]3 years ago
4 0

A free radical in Biology means: an especially reactive atom or group of atoms that has one or more unpaired electrons.

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A cell that consists of a 65% salt concentration is placed in a solution with a 27% salt concentration. What will happen to this
zzz [600]

Answer:

The correct answer would be - the cell will get water and expand.

Explanation:

If a cell with a higher salt concentration is placed ins a low salt concentration solution then the water will move through the cell membrane into the cell and the cell will swell or expand.

Water always moves from a low solute concentration to a high concentration area, therefore, if the cell has more salt concentration than outside the cell water move inside the cell which leads to an increase in the water concentration inside the cell and expands its size.

3 0
3 years ago
Why might two elements possess similar chemical properties?
Studentka2010 [4]

<u>A (they belong to the same group of the periodic table)</u>

<u></u>

The answer is A because C doesn't have a causal relationship, D doesn't strongly effect most chemical properties, and chemical properties remain unchanged with state of matter.

7 0
3 years ago
Ddt was widely used as a pesticide for 20 years. Its use was banned after studies showed severe side effects were evident in hum
emmasim [6.3K]

Answer:

One major side effect of DDT was the extreme damage to bird populations. DDT caused the shells of bird eggs to become extremely thin, which made them prone to breaking from minor disturbances and failing to thrive due to temperature regulation issues. It also slowly poisoned animals, especially birds that fed on insects that were poisoned by DDT. A notable bird species that was affected by DDT is the bald eagle. At one point in the 1960s, bald eagles nearly went extinct due to various effects of DDT. The threat of one of the most recognizable animals in America going extinct led to lawmakers trying to ban DDT.

8 0
2 years ago
How many hydrogen atoms are present in each water molecule?
iragen [17]

Answer:

Answer is A.

Explanation:

H2O, meaning 2 hydrogen and 1 oxygen. This is the recipe for water basically.

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Which of the following terms is a comparison between the number of copies
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Allele frequency

If helpful please mark as brainliest:)

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