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3 years ago

15 points and brainliest!

Biology

2 answers:

KengaRu [80]3 years ago

6 0

the number of protons in the nucleus of the atom is called the atomic number.

**brainllest**

PSYCHO15rus [73]3 years ago

3 0

atomic number

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I GOVE BRAINLIEST!!!

disa [49]

Answer:

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes . Meiosis also produces genetic variation by way of the process of recombination .

Explanation: Meiosis is important for three main reasons : it allows sexual reproduction of diploid organisms , it enables genetic diversity , and it aids the repair of genetic defects .

Plss follow me and Mark as brainlest

5 0

2 years ago

Read 2 more answers

The number of cells in an average-sized adult human is on the order of 10^14 cells. Use this information, and the estimate that

KengaRu [80]

IF:
Number of cells: $C = 10^{14}$
DNA lenght: $D = 2m = 12.42 * 10^{-4} mi$
Distance from Earth to Sun: $ES=93000000 mi = 9.3* 10^{7}mi$

Then:
a) Over how many miles would the total DNA from the average human stretch?
The answer is product of multiplication of the number of cells (C) and the DNA length (D):
Total DNA: $T = C*D$
⇒ $T = 10^{14}*12.42* 10^{-4} mi$
⇒ $T = 12.42* 10^{14-4} mi$
⇒ $T = 12.42* 10^{10} mi$
The total DNA from the average human will stretch $12.42* 10^{10} mi$

b) How many times would the total DNA from the average human stretch from Earth to the Sun and back?
The answer is concluded from the ratio of the total DNA length (T) and the twice (because of stretch to the Sun and back, thus, two directions) of distance from Earth to the Sun (ES) and :
Ratio: $R= \frac{T}{2*ES}$
⇒ $R = \frac{12.42* 10^{10}mi }{2*(9.3* 10^{7}mi)}$
⇒ $R = \frac{12.42* 10^{10}}{18.6*10^{7}}$
⇒ $R = 0.6677* 10^{10-7}$
 ⇒ $R = 0.6677* 10^{3}$
 ⇒ [tex]R = 667.7
Thus, 667,7 times will the total DNA from the average human stretch from Earth to the Sun and back.

6 0

3 years ago

13.The simplest pure substances that cannot be broken down into any other substances are called

GuDViN [60]

Answer:

Element

Explanation:

Element is a pure substance that cannot be broken down.

3 0

2 years ago

Which part of a molecule does which part of a molecule dose sunlight 'excite'?

Harrizon [31]

D. None of the above

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3 years ago

Is this internal or external conflict? Mr. Farris’s letters to the editor of the local newspaper turned into a very nasty exchan

Finger [1]

Me I have to say external

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3 years ago