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Brilliant_brown [7]
3 years ago
6

Why is carbon considered tetravalent? A. Since it has four electrons in its outermost orbital, it needs four more electrons to c

omplete its octet. B. Since it has two electrons in its outermost orbital, it needs four more electrons to complete its octet. C. Since it has four electrons its outermost orbital, it can donate four electrons to complete its octet.
Biology
1 answer:
Ede4ka [16]3 years ago
6 0
The answer to this question is c since it has 4 electrons to outermost orbital it can donate 4 electrons
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C6H12O6 + 6O2 --> 6H2O + 6H2O
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Answer:

18

Explanation:

6 in C6H12O6 and 12 (6×2) from O2

Therefore, 12 + 6 = 18

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2 years ago
Long before the structure of DNA was solved, the physicist Erwin Schrodinger suggested that the three-dimensional arrangement in
Georgia [21]

Watson and Crick's model explained mutability because bases pairs can suffer changes (mutations) during DNA replication. Moreover, this model also explained stability because DNA strands are held together by hydrogen bonds.

Deoxyribonucleic acid (DNA) is a double helix molecule composed of two long chains of four types of nucleotides, each containing one different nitrogenous base, i.e., Adenine, Guanine, Cytosine and Thymine.

In Watson and Crick's model, both DNA strands are held together by hydrogen bonds between nitrogenous bases on opposite DNA strands, thereby providing stability to the DNA molecule.

In DNA, Guanine always pairs with Cytosine by three hydrogen bonds, while Adenine always pairs with Thymine by two hydrogen bonds.

Moreover, Watson and Crick suggested that mutations could occur as a consequence of a base occurring very infrequently in one of the less likely tautomeric forms during DNA replication, thereby also explaining the mutability of life.

Learn more in:

brainly.com/question/762661

3 0
2 years ago
Number 12 please I took notes of these but the wording on the question is throwing me off
qaws [65]

Answer: Carbon Dioxide, Water, Chemical, Radiant, Glucose, and Oxygen

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6 0
2 years ago
Why do you think the acceleration due to gravity is represented by a negative number?<br> 20 points
BigorU [14]
When you drop a ball, it is dropped DOWNWARDS so the number is represented by a negative number. If you toss the ball up it will be a positive number.  

To answer your question: 
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8 0
3 years ago
Read 2 more answers
Explain how a mutation near, but outside of, the coding region of Pitx1 may cause a loss of pelvic fins without pleiotropic effe
ipn [44]

Since the Pitx1 gene codes for a protein crucial im lower limns development, a mutation occurring near Pitx1 gene will affect refikjs around the lower limbs but not those far away from it.

<h3>What are mutations?</h3>

Mutations refers to alterations or error that occur which change the original sequence of nucleotides in a DNA molecule.

The Pitx1 gene is a gene that codes for a protein that involved in development of the lower limbs.

A mutation near but outside of the coding region of Pitx1 may cause a loss of pelvic fins without pleiotropic effects on the pituitary gland and jaw because the pelvic fins form part of the lower limbs whole the jaws and the pituitary gland are not found in the lower limbs.

Therefore, the mutation occurring near Pitx1 gene will affect regions around the lower limbs but not those far away from it.

Learn more about mutation at: brainly.com/question/17031191

4 0
2 years ago
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