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2 years ago

Explain the role of enzymes as biological catalysts that lower the activation energy of a reaction.

Biology

1 answer:

tia_tia [17]2 years ago

6 0

Answer:

Enzymes are one kind of protein which functioning as catalyst that speed up reactions by lowering activation energy.Enzyme accelerate a reaction without altering its chemical equilibrium.

Explanation:

Energy which is required for start a biochemical reaction is called activation energy.Activation Energy helps to jump and start a thermodynamically favorable reactions.

Enzymes can many way to its activation energy.

1. The enzyme may hold the substrates in such a way as to distort the substrate bonds closer to their form in the transition state. This reduces the amount of energy needed to complete the transition.

2.Enzyme create a charge distributor which opposite of transition state his lowers the energy of the transition state and decreases the activation energy.

3.The enzyme may reduce the reaction entropy by bringing substrates together in the correct orientation to react.

4. The enzyme may provide a completely different chemical pathway for the reaction. It may form new bonds in the ES complex that would be difficult to form without the enzyme.

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Pain-sensitive neurons (called nociceptors) conduct action potentials from the skin or teeth to sites in the brain involved in p

marusya05 [52]

Answer:

In the gums

Explanation:

Lidocaine is a compound which can be used as a local anaesthetic. This anaesthesia works by blocking the voltage-gated channels which allows the influx of the sodium ions. As the sodium ions do not enter therefore an action potential is not generated in the axons as a result of which no pain is felt in the area.

In the given since the lidocaine is used by the dentist therefore the dentist in order to treat some dental problem must inject the lidocaine in the gums where the sensory receptors of the teeth are present.

Thus, in the gums is the correct answer.

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2 years ago

What sort of information can you get from a body fossil that you can't get from a trace fossil?

den301095 [7]

Trace fossils include footprints, trails, burrows, feeding marks, and resting marks. Trace fossils provide information about the organism that is not revealed by body fossils. Trace fossils are formed when an organism makes a mark in mud or sand.

7 0

1 year ago

The head of a human offspring turns down and prepares to enter the birth canal during ________

masya89 [10]

If I am correct it is The Third Trimester

4 0

2 years ago

Read 2 more answers

When making a U-turn at an intersection, you should begin the maneuver __________ .

mezya [45]

C is correct

A is incorrect because the far right lane of the road is NEVER a U-turn lane unless you can drive on the sidewalk legally (you can't)

B is incorrect it is not always the lane next to the center lane

4 0

2 years ago

In functional genomics, biologists use sequence information to identify the functions of various parts of genomes. Which of the

k0ka [10]

Answer:

E: specific proteins that are made by a cell under particular conditions

Explanation:

It is only specific proteins that are made by a cell under particular conditions can't be obtained from a genome sequence. In order to get information about this protein we need proteomics.

Genome sequence gives us an idea of nucleotide sequence of DNA and RNA molecules not proteins. Regulatory sequences such as promoters, enhancers, insulators, UTRs etc. all are a part of genome, rRNA genes are part of genome sequence too, non coding repetitive repeats and intron regions are also a part of genome sequence itself so option A, B & D are incorrect. Option C is also incorrect because amino acid sequence of proteins can also be determined by genome sequences because each nucleotide triplet which is known as codon refers to a specific amino acid. Option E is correct because by genome sequence we can easily get to know about amino acid sequence but not about specific protein which is synthesized at a particular condition.

6 0

2 years ago