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labwork [276]
4 years ago
9

Gravity, the force that pulls objects toward the center of Earth, can sometimes have a significant impact on the rate of erosion

, thereby increasing the rate of deposition. Which feature is most likely impacted by gravity because it can form at the bottom of a steeply sloped river?
Biology
2 answers:
monitta4 years ago
4 0

Answer:

Siltation

Explanation:

As you already saw in the question above, gravity can cause soil erosion and cause sediments from eroded soil to accumulate on the bottom of rivers, causing siltation.

The silting up causes sediments to accumulate at the bottom of the rivers, causing an increase in the riverbed. This causes the river to have an elevated bed and can cause flooding.

To avoid silting up, it is important that the riverside has vegetation capable of containing these sediments and preventing it from accumulating at the bottom of the rivers.

ANEK [815]4 years ago
3 0

Answer:

A

Explanation:

edge

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What letter represents tRna
AleksAgata [21]

Answer:

F

Explanation:

tRNA are the RNA molecules that help decode the mRNA strand. On one end, They contain an anticodon which helps recognize the correct pairs in mRNA and on other end they contain amino acid. In this picture, letter F has both of these therefore it is tRNA.

7 0
3 years ago
Is this a scientific model? Use complete sentences to explain why or why not.
pogonyaev

Answer:

Yes, this is a scientific model. It is an accurate representaction of a process. The model shows the water cycle, which is an occurrence that is difficult to observe directly.

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8 0
2 years ago
Help please. Will give brainliest
Tanzania [10]

Answer:

whats brainlist?

Explanation:

8 0
4 years ago
Drag the words to complete the sentences.
lina2011 [118]

The Replication process in eukaryotic and prokaryotic cells is quite similar. Almost the same enzymes are involved. 1)eukaryotic, 2)multiple, 3)circular.

<h3>What is the prokaryotic DNA replication process?</h3>

In prokaryotic cells,  DNA Replication consists of the unwinding and opening of the double-stranded DNA molecule, a process that starts at the replication origin.

The process is completed in three stages,

⇒ Initiation, in which helicase and topoisomerase are the first enzymes involved.

Helicase works in the replication origin.

  • It separates the DNA into two strands allowing the replication fork to advance by unwinding the DNA.
  • It breaks hydrogen bonds between nitrogenated bases pairs.

Topoisomerase impedes the DNA double helix near the replication forks to get too coiled when the DNA is opening.

⇒ Elongation, in which DNA polymerase I and III, primase, and ligase act,

Polymerase I and III are responsible for DNA elongation.

  • They are in charge of adding nucleotides to the growing chain, from 3' to 5' extremes.
  • It includes only nucleotides that complement the original strand.
  • They need to recognize a primer to begin.
  • The new chain grows in 5’-3’ direction

Primase is in charge of synthesizing primers.

DNA polymerase I eliminate ARN primers and substitute them with DNA.

DNA ligase seals the gaps that remain after replacing the primers.

⇒ Mistakes correction

Endonuclease cuts the wrong segment

Polymerase I and III are in charge of correcting errors and filling empty spaces.

Ligase seals the corrected extremes.

The prokaryotic replication result is two DNA molecules, each of them carrying an old strand and a new strand.

<h3>What is the eukaryotic DNA replication process?</h3>

Eukaryotic DNA replication is the process through which DNI molecule duplicates. This event takes place during the S stage of the interphase. So when the cell divides during mitosis or meiosis, each cell will get a complete set of chromosomes.

DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.

The main difference concerning the prokaryotic replication process is that in eukaryotic cells there are

  • 5 different polymerase enzymes
  • several replication origins per chromosome
  • involves histones

The origin of the replication requires

  • The helicase enzyme breaks hydrogen bonds and separates the two original strands.
  • The topoisomerase enzyme is necessary to release tension.
  • Other proteins are also needed to join the strains and keep them separated.

Once the molecule is opened, there is a region named replication forks.

  • DNA polymerase makes the new nucleotides enter the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs thymine, and cytosine pairs guanine.

DNA strands are antiparallel, and replication occurs only in 5'-3'direction. So one of the strands will replicate continuously, while the other strain will be formed by short fragments known as Okazaki fragments.

Primers are needed to make the DNA polymerase work. Primers are small units of RNA and are placed at the beginning of each new fragment. These are later eliminated by Polymerase.

Ligase seals the gaps.

<u>Complete sentenses</u>

Before a cell divides, its DNA must be replicated without errors so that the genetic codes for proteins are expressed properly. In<u> </u><u>eukaryotic</u><u> </u>cells, which have linear chromosomes, replication occurs in<u> </u><u> multiple  </u>locations and ends when all the chromosomes are copied. In prokaryotic cells, which have<u>  </u><u>circular  </u>DNA, replication starts in only a single location and proceeds until the entire chromosome is copied.

You can learn more about replication process in prokaryotic and eukaryotic cells at

brainly.com/question/21675925

brainly.com/question/12250616

brainly.com/question/13762319

brainly.com/question/13064177

4 0
2 years ago
Read 2 more answers
Which type of information is pseudoscience based on?
abruzzese [7]
The answer is unsupported claims.

Pseudoscience is not actual science. While science is based in logical reasoning, pseudoscience consists of statements, beliefs, or practices that don't have evidence to support them but they claim to be scientific and factual (some examples: homeopathy, geocentrism, reiki, flat earth theory)

5 0
4 years ago
Read 2 more answers
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