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masya89 [10]
2 years ago
14

¿Como se relacionan los experimentos de Darwin con los cambios en el tiempo?

Biology
1 answer:
andrew-mc [135]2 years ago
6 0

Answer:

Darwin's theory of evolution by natural selection states that living things with beneficial traits produce more offspring than others do. This produces changes in the traits of living things over time. During his voyage on the Beagle, Darwin made many observations that helped him develop his theory of evolution.

Explanation:

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Which occurs during translation
RideAnS [48]

Answer:

Translation occurs in a structure called the ribosome, which is a factory for the synthesis of proteins. ... Translation of an mRNA molecule by the ribosome occurs in three stages: initiation, elongation, and termination. During initiation, the small ribosomal subunit binds to the start of the mRNA sequence.

Explanation:

7 0
3 years ago
Fill in the blanks with vocabulary and enzyme terms. All answers should be in lower case The two strands of the DNA are one stra
zimovet [89]

Answer:

The correct answers are:

The two strands of the DNA are "assembled" to each other such as the end of the DNA strand will be 3' paired with a 5' end.

The two strands of the DNA are held together with "hydrogen" bonds.

In DNA, A binds with "T" and G binds with "C".

"DNA helicase" unwinds the DNA for replication to begin.

An RNA primer is created by enzyme "primase" which then supplies the "3′" hydroxyl group used by "DNA polymerase" to start adding DNA nucleotides.

The DNA strand is made from "5'" to "3'".

The "lagging" strand is made in short segments called okazaki fragments. The "leading" strand is made in one continuous piece.

After replication, the RNA primers are removed by enzyme "RNase H" and replaced with DNA nucleotides.

The enzyme "DNA ligase" seals the nicks in the sugar-phosphate backbone after the RNA primers are removed.

On linear chromosomes the enzyme "telomerase" extends the ends by creating a repeating sequence of nucleotides which helps prevent loss of genetic material with each replication.

Explanation:

The two strands of the DNA are "assembled" to each other such as the end of the DNA strand will be 3' paired with a 5' end. - The double helix structure of DNA is assembled following a 3' paired with a 5' end, this is called an  antiparallel arrangement which gives more stability to the DNA.

The two strands of the DNA are held together with "hydrogen" bonds. - This are weak bonds, however since they are numerous hydrogen bonds in DNA, they hold together the structure.

In DNA, A binds with "T" and G binds with "C". - This is called the base pairing rule or the Chargaff's rule.

"DNA helicase" unwinds the DNA for replication to begin. - DNA helicase catalyze the breaking down of the hydrogen bonds of the center of the strand.

An RNA primer is created by enzyme "primase" which then supplies the "3′" hydroxyl group used by "DNA polymerase" to start adding DNA nucleotides. - Primase catalyzes the synthesis of a RNA primer, a small sequence of RNA that marks the begging of the polymerization.

The DNA strand is made from "5'" to "3'". - DNA polymerase needs the 3′ hydroxyl group to start adding DNA nucleotides, adding nucleotides from its 5′ group.

The "lagging" strand is made in short segments called okazaki fragments. The "leading" strand is made in one continuous piece. - The leading strand is synthesized from 5' to 3', therefore the polymerization occurs continuously. The lagging strand is backwards, therefore okazaki fragments must be added.

After replication, the RNA primers are removed by enzyme "RNase H" and replaced with DNA nucleotides. - RNase H is an endogenous hydrolase, it catalyzes the removal of the RNA primers while DNA polymerase I fill the blanks with DNA.

The enzyme "DNA ligase" seals the nicks in the sugar-phosphate backbone after the RNA primers are removed. - As the name implies, DNA ligase facilitates the joining of DNA strands, such as the ones formed where the RNA primers where before.

On linear chromosomes the enzyme "telomerase" extends the ends by creating a repeating sequence of nucleotides which helps prevent loss of genetic material with each replication. - Telomerase, also known as terminal transferase, adds the repeating sequences (telomeres) in eukaryotic cells.

5 0
3 years ago
_____ blood analysis provides qualitative information such as size, shape, and ratio of one cell type to another.
alexira [117]

Answer: Differential

Explanation:

The differential blood analysis provides information about the different components of the blood.

Analysis of blood is required in order to detect any disease. This test can detect the difference between the normal cell and abnormal cell.

The blood test can diagnose any type of disease like leukemia, any inflammation, cell shape, size and then compare it with normal cells of the body.

5 0
3 years ago
A 35-year-old woman is 1 day postpartum. she is reporting moderate perineal pain after giving birth and would like to clean the
Ainat [17]

A sitz bath  

A sitz bath method of bathing is most appropriate for this client .

A sitz bath is a warm, superficial method of bathing that cleanses the perineum (region between the genital area and the anus). The sitz bath is used when an individual recently give birth or when having discomfort from hemorrhoids. The sitz bath’s warm water promotes healing as it raises blood flow to the perineum. It also provides relief from pain, itching or irritation in the genital area.


5 0
3 years ago
Human beings are responsible for the conservation of the environment. Justify<br>the statement.​
Alex_Xolod [135]

Answer:

because of the following ways

Explanation:

1)because they protect plants

2)because they protect animals

3)because they are starting to use less vehicles

4)because they lessened the use of industrial vehicles

4 0
3 years ago
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