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ehidna [41]
2 years ago
14

1.) There is a lot of carbon dioxide in the atmosphere, what is the process by which plants remove it from

Biology
1 answer:
jek_recluse [69]2 years ago
8 0
1) photosynthesis

2) carbohydrate?

3) fats and protein

4) through food chains

5) cellular respiration

6) bacteria, plants, animals

7) fossils

8) combustion

9) burning fossil fuels, certain chemical reactions, when organisms die

10) plants can use photosynthesis to remove carbon dioxide from the air naturally
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What is the point of DNA replication​
Degger [83]

Answer:

DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell

Explanation:

DNA replication is the biological process in which two identical copies of DNA are produced from one original DNA molecule.

The steps involved in the process of DNA replication are as follows:

The first step in DNA replication is to ‘unzip’ the double-helix structure of the DNA molecule.

This is carried out by an enzyme called helicase which breaks the hydrogen bonds holding the complementary bases of DNA together (A with T, C with G).

The separation of the two single strands of DNA creates a ‘Y’ shape called a replication ‘fork’. The two separated strands will act as templates for making the new strands of DNA.

One of the strands is oriented in the 3’ to 5’ direction (towards the replication fork), this is the leading strand. The other strand is oriented in the 5’ to 3’ direction (away from the replication fork), this is the lagging strand. As a result of their different orientations, the two strands are replicated differently.

A short piece of RNA called a primer (produced by an enzyme called primase) comes along and binds to the end of the leading strand. The primer acts as the starting point for DNA synthesis. DNA polymerase binds to the leading strand and then ‘walks’ along it, adding new complementary nucleotide bases (A, C, G and T) to the strand of DNA in the 5’ to 3’ direction. This replication is continuous. Numerous RNA primers are made by the primase enzyme and bind at various points along the lagging strand.

Chunks of DNA, called Okazaki fragments, are then added to the lagging strand also in the 5’ to 3’ direction. This type of replication is called discontinuous as the Okazaki fragments are joined up later.

Once all of the bases are matched  (A with T, C with G) an enzyme called exonuclease strips away the primer(s).

The new strand is proofread to make sure there are no mistakes in the new DNA sequence.

Finally, an enzyme called DNA ligase seals up the sequence of DNA into two continuous double strands.

The result of DNA replication is two DNA molecules consisting of one new and one old chain of nucleotides. This is why DNA replication is described as semi-conservative, half of the chain is part of the original DNA molecule, half is brand new.

Following replication, the new DNA automatically winds up into a double helix

(b) DNA replication occurs in S phase of cell cycle in eukaryotes. If cell division is not followed after DNA replication then the replicated chromosomes (DNA) would not be distributed to daughter nuclei. A repeated replication of DNA without any cell division results in the accumulation of DNA inside the cell nucleus, leading to polyploidy.

7 0
2 years ago
Which is a shared characteristic of all animals?
erma4kov [3.2K]

answer is d hope this can help

4 0
3 years ago
Read 2 more answers
The lateral geniculate nucleus (lgn) is not organized in any particular way that researchers have thus far been able to identify
diamong [38]
The correct answer is option a
5 0
1 year ago
Which of the following is NOT a property that affects weather? A. Temperature B.Moisture C. Pressure D. Time​
ivann1987 [24]
C doesn’t affect weather
7 0
2 years ago
Your friend (an endotherm) adopts a 50 kg snake (an ectotherm) as a pet. Your friend also weighs 50 kg. a) Given what you have l
lesantik [10]

Answer:

Friend (endotherm) will need to eat more calories than snake (ectoderm) to maintain constant body temperature.

To generate heat endotherms convert the food they eat into energy through the process called metabolism. Most of the food that the endotherms eat is converted into fuel to maintain a constant body temperature. Endotherms need to eat more food than ectoderms of the same size to maintain their constant body temperature.

Explanation:

3 0
3 years ago
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