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artcher [175]
3 years ago
7

What is so bad about coal

Biology
2 answers:
tatuchka [14]3 years ago
8 0
It's bad because it emits many toxic elements that are bad for our health such as Sulfur Dioxide, Nitrous Oxide, etc. Hope this helped -Ashlynn
harkovskaia [24]3 years ago
3 0
Coal destroys wildlife hurts communities destroys countryside so its pretty bad
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Which of the following statements is FALSE?
krek1111 [17]

Answer:

Answer is A. Cdk7 of the CAK (TFIIH component) phosphorylates Cyclin 8 of the Mediator to down regulate promoter activity.

Refer below.

Explanation:

Cdk7 of the CAK (TFIIH component) phosphorylates Cyclin 8 of the Mediator to down regulate promoter activity is a FALSE STATEMENT.

7 0
3 years ago
2. If 10% of the bases in a molecule of DNA are adenine, what is the ratio of adenine to guanine in the same
sertanlavr [38]

Answer: Option D) 1:4

Explanation:

Recall that the sum of all nitrogenous bases in the DNA nucleotide is equal to 100%. And specific base pairings of Adenine to Thymine (A=T), and Cytosine to Guanine (C=G) must be equal.

So, the percentage of Adenine equal thymine, and that of cytosine equals guanine.

Now, A + T + C + G = 100%

So, if adenine makes up 10% of the DNA nucleotides, then thymine is also 10%.

Then, 10% + 10% + C + G = 100%

20% + C + G = 100%

C + G = 100% - 20% = 80%

Thus, divide 80% by 2 to obtain the individual percentage of cytosine and guanine. Each will take 40%

Ratio Adenine to Guanine is 10% to 40%

or 1:4 in simplest form

7 0
3 years ago
Read 2 more answers
Cells can make certain molecules when needed for a certain function. What happens when those molecules are no longer needed
Elan Coil [88]

Answer:

The last choice.

Explanation:

The molecules would be stored for later use. The cells won't just throw out as molecule they could use later, they will n. it until they need it again.

4 0
3 years ago
A somatic cell from a garden pea normally contains 14 chromosomes. how many sister chromatids would that cell contain during g1
Lapatulllka [165]
There will be 0 sister chromatids would that cell contain during G1 of the cell cycle. Chromatids in biology is defined as each of the two threadlike strands into which a chromosome divides longitudinally during cell division. Each contains a double helix of DNA. The answer in this question is zero (0).
8 0
3 years ago
In which direction does the replication fork move as dna replication occurs?
attashe74 [19]
DNA replication occurs in the 5 prime (5') to 3 prime (3') direction.
I'm sure you've heard this many times. I tutor in genetics, and all of my students can rattle that off. Less understand what it means.

First, understanding what 5' and 3' mean is important. DNA is composed of a ribose sugar, a phosphate group, and a base (A,T,G,C). The sugar has a phosphate group attached to its fifth carbon, and a hydroxyl group on its 3rd carbon. Nucleotides (separate components of DNA) are linked by the phosphate group and the hydroxyl group. So, every nucleotide is linked at the phosphate group and the hydroxyl group besides two - the two nucleotides at either end of the strand of DNA. The one that leaves a phosphate group exposed is called the 5' end of DNA, and the one that leaves a hydroxyl group exposed is called the 3' end of DNA.

<span>A problem with many students just memorizing that replication occurs in the 5' to 3' direction is that there are two strands of DNA involved in replication. DNA polymerase (the major enzyme responsible for replication) reads the already existing strand of DNA in the 3' to 5' direction, and creates the new strand of DNA in the 5' to 3' direction (meaning that it adds nucleotides to the 3' end of the new strand).</span>
7 0
3 years ago
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