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nalin [4]
2 years ago
11

How does burning fossil fuels cause an increase of carbon in the air?

Biology
1 answer:
alexandr1967 [171]2 years ago
4 0

Answer:

The combustion of fossil fuels such as coal and oil has raised the concentration of carbon dioxide in the atmosphere during the last century (CO2). This occurs because the combustion of coal or oil produces CO2 by combining carbon in the air with oxygen.

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What would be the effect on DNA replication of mutations that destroyed each of the following activities of DNA polymerase I?a.
lbvjy [14]

Answer:

a. 3′→5′ exonuclease activity = No proof reading

b. 5′→3′ exonuclease activity = No primer removal

c. 5′→3′ polymerase activity = No gap filling

Explanation:

<u>a) 3′→5′ exonuclease activity = No proof reading</u>

3′→5′ exonuclease activity of DNA polymerase I is responsible for proof reading so that if a wrong nucleotide is inserted during replication, it could be removed. So if a mutation will occur in the domain which is responsible for 3′→5′ exonuclease activity error prone DNA replication will occur.

<u>b. 5′→3′ exonuclease activity = No primer removal</u>

5′→3′ exonuclease activity is useful in removing primers so that appropriate nucleotides could be inserted in the lagging strand. But if mutation will occur in this part of DNA polymerase I then primer will not be removed and replication of lagging strand will be at halt.

<u>c. 5′→3′ polymerase activity = No gap filling</u>

5′→3′ polymerase activity of DNA polymerase I, joins the nucleotides in the lagging strand where the gaps have been created after removal of primer. So the gaps created after removal of primer in the lagging strand will not be filled if there will be a mutation in this segment of DNA polymerase I.

3 0
3 years ago
someone please help with this question!!!! Describe how an indicator can be used to determine if starch diffuses through the mem
nlexa [21]

Add starch indicator solution to the water in the beaker. If the indicator solution changes color than starch is present.

3 0
3 years ago
Two alleles of a given gene exist in a population: CTGT and TGTC. (Note: The codes given are only for the transcribed strand of
kumpel [21]

Answer:

6 alleles.

Explanation:

Alleles may be defined as the alternative form of a single gene. The alleles are present on the same chromosome of a particular gene.

CTGT and TGTC are the two alleles of a given gene. Three single crossovers exist between the two alleles. the single crossover can produce two new allele so the three crossovers can produce six new alleles.

Thus, the correct answer is option (D).

5 0
3 years ago
Which of these processes is defined as the joining of two atomic nuclei to create a new nucleus?
Andrews [41]
Nuclear fusion is the answer of this question
7 0
3 years ago
1. What is a longitudinal wave?
hichkok12 [17]

Explanation:

1. What is a longitudinal wave?

  • A wave vibrating in the direction of propagation
  • This is also called "pressure waves"
  • Example: Sound waves, ultrasound waves

2. When you hear a sound wave through the air, what are you detecting?

We are detecting the sound wave through the ears. There is a part called ear drum present inside the ear and it turn contains 3 bones which makes us to hear the sounds. When sound waves enters, the ear drum vibrates.

3. In which direction does the material vibrate, as energy travels through it?

The direction is perpendicular to the direction of energy transport.

4. When a wave transmits, or transfers, energy, do the individual molecules or particles also move from one end to the other?

Yes, the particles move from one end to other.

6 0
3 years ago
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