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leonid [27]
3 years ago
11

How do you find the amount of valence electrons?

Biology
2 answers:
allochka39001 [22]3 years ago
8 0
By just calculating it's mass
ANTONII [103]3 years ago
5 0

The amount of valence electrons in an atom can be found by looking at the atom's outermost shell. The number of electrons within the outermost shell is the number of valence electrons an atom has.

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Select the correct answer.
GrogVix [38]

Answer:

D.  A mutation causing uncontrolled cell division

Explanation:

Cell division is controlled by various mechanisms. Any mutations in the genes regulating the cell division lead to uncontrolled cell division. Loss of control over the process of cell division leads to the formation of tumors.  

These tumors may cause cancer if they are transformed into malignant tumors. Hence, a mutation that causes loss of control over cell division is harmful.  

5 0
3 years ago
In northern Canada, a population of rabbits was predominantly white in color. The allele for white color is recessive while the
lesya692 [45]
Its C) directional selectiton
7 0
3 years ago
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Wich best describes traditional classification?
Step2247 [10]
It is based on shared characteristics 
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2 years ago
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You have a 15kb plasmid. EcoRI cuts the plasmid into 7kb and 8kb pieces, and BamHI cuts the plasmid into 1kb and 14kb pieces. If
Harman [31]

Answer:

a. Bands at 1kb, 6kb and 8kb

Explanation:

The EcoRI and BamHI are the restriction enzymes which cut the DNA sequence especially a plasmid at specific sites called the restriction sites.

The restriction enzymes produces bands of specific length therefore these restriction enzymes are used to estimate the approximate length of the DNA.

In the given question, the

1. EcoRI- produces two strands of 7 kb and 8 kb

2. BamHI- produces two strands of 1kb and 14kb

This shows that the length of DNA sequence is 15kb

But when the DNA strand are digested with both the enzymes simultaneously then it will produce three bands as:

i) 14 kb can be broken down in 2 bands of 6 kb and 8 kb

ii) 1 kb band is already produced by the Bam HI.

This shows that 1+6+8= 15 kb

Thus, Option-A is correct.

5 0
3 years ago
Explain how a forester can make sure that an area is harvested sustainably.
nalin [4]

Answer:

Foresters are responsible for determining areas that can be harvested sustainably and helps monitor areas to be harvested. Foresters determine which areas have trees that can be removed without causing harm to the environment and ensures that areas are not overharvested.

Explanation:

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3 years ago
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