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Vedmedyk [2.9K]
2 years ago
12

Which substance acts as a buffer in natural water?

Biology
1 answer:
IgorLugansk [536]2 years ago
4 0

Answer:

i think Decaying plant matter is answer

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TRUE/FALSE
kotykmax [81]

Answer:

False

Explanation:

A double-helical DNA molecule consists of two DNA strands. A DNA strand has free 5' phosphate at one end and a free hydroxyl group (OH) at its 3' end. A DNA double helix is said to be antiparallel since each end of the double helix has an exposed 5' phosphate on one strand and a free 3' hydroxyl group (OH) on the other. This means that the two DNA strands run in opposite directions. A phosphate group is always esterified to the 5' carbon of the pentose sugar; never at its 3' end.

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When inhaled, crystalline silica can cause scar tissue to form on what organs?
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Crystalline silica is a natural compound in the earth's crust and is a basic component of sand and granite. Silicosis is an incurable disease of the lungs caused by breathing crystalline silica dust. This dust can cause scar tissue to form in the lungs.                    
3 0
3 years ago
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Please help me with this question.
lara [203]
The answer is b. Hope this helps :)
8 0
3 years ago
What is needed in order to give the DNA polymerase a place to start copying DNA? How long is it? What puts it on?
zzz [600]

DNA polymerases add nucleotides to the 3′ end of a polynucleotide chain. ... To initiate this reaction, DNA polymerases require a primer with a free 3′-hydroxyl group already base-paired to the template. They cannot start from scratch by adding nucleotides to a free single-stranded DNA template.

How is DNA replicated? Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.

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3 years ago
The driving force presented by Wegener for his hypothesis was that continents ploughed through ocean crust.
babymother [125]

Answer:

"Alfred Wegener suggested that continental drift occurred as continents cut through the ocean floor, in the same way as this icebreaker plows through sea ice. ... The supercontinent later broke apart and the continents having been moving into their current positions ever since. He called his hypothesis continental drift."

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