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aksik [14]
3 years ago
5

A postitivly charged atom has? A.Lost electrons B. Lost protons C.Gained electrons D.Gained protons

Biology
1 answer:
Kipish [7]3 years ago
6 0

Not to be too picky, but the question ought to say a positively charge ion rather than atom.

I will assume that is what you mean. An ion, using ordinary means, will be positive if it loses electrons (which are negative).

An ion can never gain protons. Left alone, the nucleus will remain unchanged for the rest of eternity. D is wrong.

C is wrong. If electrons are gained, the ion will go negative.

B is wrong for the same reason D is. An ion can't gain protons and it can't lose them.

A is the answer.

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The block shown above is a cube of halite. Each side measures 3 cm. Find the volume of the cube of halite.
ddd [48]

The block shown above is a cube of halite. Each side measures 3 cm. Then the volume of the cube of halite is 27 cm³.

<u>Explanation:</u>

Step 1:

All the sides of the cubes are equal.

Step 2:

Given,

 a= 3 cm

Step 3:

Volume of the cube = a³

                                 = 3 × 3 × 3

                                 = 27 cm³

Hence, The volume of the cube is 27 cm³

6 0
3 years ago
What do you think would have the greatest effect on the body—a harmful mutation in a pluripotent embryonic stem cell
spin [16.1K]

Answer:

This question lacks options, the complete question is: What do you think would have the greatest effect on the body—a harmful mutation in a pluripotent embryonic stem cell, or a harmful mutation in an adult multipotent stem cell?The correct answer is a harmful mutation in a pluripotent embryonic stem cell.

Explanation:

Pluripotent Stem Cells can self-renew and differentiate into any of the three germ layers, which are: the ectoderm, the endoderm and the mesoderm. These three germ layers subsequently differentiate to form all the tissues and organs within a human being. If during embryonic development, genetic mutations - alterations in genes - occur in the embryonic stem cell, they pass to daughter cells as a consequence of cell division, and an individual is generated whose cells differ at the genetic level. Multipotent stem cells are organospecific cells, that is, they can give rise to any type of cells but from a specific organ (a lung, a kidney or the brain). Their differentiation ends the moment they specialize and become a cell with a specific function within a specific tissue or organ. If there were a mutation in these cells, it would damage a specific designed tissue or organ.

3 0
3 years ago
An element has a half-life of 30 years. If you start with 10g of this element, how many grams of this element would remain after
drek231 [11]

After two half-lives or 60 years, 7.5 g of the element will be left.

<u>Explanation:</u>

<u>Half-life:</u>

  • In simple words, Half-life can be defined as the amount of time needed for a quantity to fall to half its value as contained at the beginning of the time period.
  • In this problem the half-life of the element is thirty years, then after thirty years half of the sample would have decayed and half would be left as it is.
  • After thirty years (The first half-life ) 30 /2 = 15 g declines and 15 g remains disappeared.
  • And after another sixty years (The two half-lives) 15 /2 = 7.5 g declines and 7.5 g remains disappeared.
  • After two half-lives or 60 years, 7.5 g of the element will be left.
3 0
3 years ago
What are three processes that contribute to genetic variation during sexual reproduction
brilliants [131]
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  3. Mutation – on rare occasion, there is a slight and random change in the genes of a gametic cell caused by environmental factors.

7 0
3 years ago
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Lelu [443]

Answer:

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Explanation:

hope this helps you, sorry if it is not what you are looking for.

7 0
2 years ago
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