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faust18 [17]
3 years ago
12

A researcher proposes a model to explain how enzyme-substrate interactions determine enzyme specificity. The model is based on t

he idea that substrate molecules form favorable interactions with the amino acid side chains in an enzyme's active site.
Biology
1 answer:
schepotkina [342]3 years ago
6 0

Answer:

A substance that accelerates a chemical reaction, and that is not a reagent, is called a catalyst. The catalysts of the biochemical reactions that occur in living organisms are found as enzymes. These proteins are also proteins, although some ribonucleic acid (RNA) molecules also act as enzymes.

Enzymes executed the fundamental task of decreasing activation energy, that is the amount of energy that a reaction must be added in order for this audience. Enzymes operated by binding to the reagent molecules and sustaining them in such a way that the processes that form and break chemical bonds happen more easily.

Let's clarify an important point, enzymes do not change the ∆G value of a reaction. That is, they do not change if a reaction releases or absorbs energy in general. This is because enzymes do not affect the free energy of reagents or products.

Instead, enzymes decrease the energy of the transition state, an unstable state through which reagents must pass to become products. The transition state is at the top of the "hill" of energy in the previous diagram.

Active sites and substrate specificity

To catalyze a reaction, an enzyme sticks (binds) to one or more reagent molecules. These molecules are the substrates of the enzyme.

In some reactions, a substrate breaks into several products. In others, two substrates join together to create a larger molecule or to exchange parts. In fact, for any biological reaction that can occur to you, there is probably an enzyme to accelerate it.

The part of the enzyme where the substrate binds is called the active site (since that is where the catalytic "action" occurs).

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The restriction endonuclease ecori cleaves the dna sequence 5'-gaattc-3' in such a way as to leave a 5' overhang, which is often
qaws [65]

The restriction endonuclease EcoRI cleaves the DNA sequence 5'-GAATTC-3' in such a way as to leave a 5' overhang, which is often referred to as a "sticky end". To 5' overhang with the complementary sequence this sticky end adhere.

  • The palindrome EcoRI restriction site breaks DNA after G and creates sticky ends with AATT. G/corresponding AATTC's DNA sequence is CTTAA/G, where "/" designates the location of the peptide bond break.
  • When the ssDNA sequence 5'-GAATTC'-3 is recognised by the restriction endonuclease EcoRI, a single-strand cut is made between the G and A nucleotides.
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To learn more about DNA.

brainly.com/question/316480

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8 0
1 year ago
Why is cohesion of water important to life on this planet?
uranmaximum [27]
Water molecules stick to the cell walls of plant's thin veins which helps prevent the water from falling backwards due to gravity.
7 0
3 years ago
how do scientists use fossil comparative anatomy and branching diagrams to explain the evolution of organism
Mnenie [13.5K]

Hi there!

In order to do fossil comparative anatomy and branching diagrams to explain the evolution of organism, scientists use <u>radiocarbonation </u><u>method</u>.

Explanation:

Carbon-14 can combine with oxygen in the atmosphere to create carbon dioxide, which is then absorbed by plants and makes its way through the food chain. The amount of carbon-14 in living plants and animals matches the amount in the atmosphere, but when plants and animals die, they no longer absorb carbon-14.

Because radiocarbon has a known rate of decay, the scientists can now determine about how long it has been since the plant or animal was alive. <u>The lower the amount of radiocarbon, the older the object.</u>

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Bones are fastened together by ​
Serggg [28]

Answer:

joints

Explanation:

bones are connected to each other by joints.

4 0
2 years ago
Read 2 more answers
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