1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sesenic [268]
3 years ago
10

The text describes the first three reactions of a metabolic pathway. Complete the sentences. Not all the terms will be placed. I

n reaction 1 of the Krebs cycle, acetyl‑CoA formed in the pyruvate dehydrogenase reaction condenses with the four‑carbon compound to form with the elimination of coenzyme A. Since the product has three carboxyl groups, this pathway is referred to as the cycle. In reaction 2 of the Krebs cycle, this product then undergoes to form . The enzyme is called aconitase because the compound c????????‑aconitate is the of the reaction. Reaction 3 eliminates CO2 to form the five‑carbon dicarboxylic acid . Oxidation also occurs, with electrons transferred from the substrate to . Consequently, this reaction is an oxidative decarboxylation.

Chemistry
2 answers:
Natali5045456 [20]3 years ago
6 0

Answer:

Explanation:

In the first step of Krebs cycle, pyruvate dehydrogenase condenses with oxalocyclate , a 4 carbon coumpound. It forms citrate with removal of CoA.. Citrate thus formed has 3 carboxylic acid group and hence this cycle is called TCA cycle or Tricarboxylic acid cycle

In reaction 2, This citrate thus formed undergoes isomerization to form isocitrate. The enzyme used here is called aconitase because this isomerization happens with cis-aconitate as the intermediate.

Further, in reaction 3, CO2 is eliminated to form \alpha -ketoglutarate which is a 5 carbon carboxylic acid. Here, oxidation occurs by electron transfer to NAD+which is converted to NADH

Final Answer:

First paragraph: Oxalocyclate, Citrate, Tricarboxylic acid

Second Paragraph: Isomerization, isocitrate, intermediate,

Third paragraph:   \alpha-ketoglutarate, NAD+

Nina [5.8K]3 years ago
4 0

In reaction 1 of the Krebs cycle, acetyl‑CoA formed in the pyruvate dehydrogenase reaction condenses with the four‑carbon compound to form <em>citrate </em>with the elimination of coenzyme A. Since the product has three carboxyl groups, this pathway is referred to as the cycle. In reaction 2 of the Krebs cycle, this product then undergoes to form<em> isocitrate. </em>The enzyme is called aconitase because the compound cis‑aconitate is the <em>intermediate product</em> of the reaction. Reaction 3 eliminates CO2 to form the five‑carbon dicarboxylic acid <em>α-cetoglutarate. </em>Oxidation also occurs, with electrons transferred from the substrate to <em>COO-</em> . Consequently, this reaction is an oxidative decarboxylation.

In the image, you can see the reaction 2 in Krebs cycle is a two steps reaction with an intermediate cis-aconitase and a product called isocitrate.

You might be interested in
Label the eurkaryotic cell​
Scilla [17]

Answer:

Here's your label diagram!

Explanation:

7 0
3 years ago
Chose the mathematical formula expressing work.
Gelneren [198K]
W = AB x F x Cos < AB, F
or just W= AB x F for short
7 0
2 years ago
What happens to the rate of dissolution as the temperature is increased in a gas solution?
Nina [5.8K]

Answer:

The rate decreases

Explanation:

When we dissolve a gas in a water, the process is exothermic. This implies that heat is evolved upon dissolution of a gas in water.

Recall from Le Chateliers principle that for exothermic reactions, an increase in temperature favours the reverse reaction. The implication of these is that when the temperature of the gas is increased, less gas will dissolve in water.

Hence increase in temperature decreases the rate of solubility of a gas in water.

8 0
3 years ago
When two gases or two liquids form a solution, the substance that is present in the largest amount is the?
skad [1K]
Is the solvent (Hope this helped)
4 0
3 years ago
From the relative rates of effusion of ²³⁵UF₆ and ²³⁸UF₆ , find the number of steps needed to produce a sample of the enriched f
Dafna11 [192]

The number of steps required to manufacture a sample of the 3.0 mole%  ²³⁵U enriched fuel used in many nuclear reactors from the relative rates of effusion of ²³⁵UF₆ and ²³⁸UF₆. ²³⁵U occurs naturally in an abundance of 0.72% are :  mining, milling, conversion, enrichment, fuel fabrication and electricity generation.

<h3>What is Uranium abundance ? </h3>
  • The majority of the 500 commercial nuclear power reactors that are currently in operation or being built across the world need their fuel to be enriched in the U-235 isotope.
  • This enrichment is done commercially using centrifuges filled with gaseous uranium.
  • A laser-excitation-based method is being developed in Australia.
  • Uranium oxide needs to be changed into a fluoride before enrichment so that it can be treated as a gas at low temperature.
  • Uranium enrichment is a delicate technology from the perspective of non-proliferation and needs to be subject to strict international regulation. The capacity for world enrichment is vastly overbuilt.

The two isotopes of uranium that are most commonly found in nature are U-235 and U-238. The 'fission' or breaking of the U-235 atoms, which releases energy in the form of heat, is how nuclear reactors generate energy. The primary fissile isotope of uranium is U-235.

The U-235 isotope makes up 0.7% of naturally occurring uranium. The U-238 isotope, which has a small direct contribution to the fission process, makes up the majority of the remaining 99.3%. (though it does so indirectly by the formation of fissile isotopes of plutonium). A physical procedure called isotope separation is used to concentrate (or "enrich") one isotope in comparison to others. The majority of reactors are light water reactors (of the PWR and BWR kinds) and need their fuel to have uranium enriched by 0.7% to 3-5% U-235.

There is some interest in increasing the level of enrichment to around 7%, and even over 20% for particular special power reactor fuels, as high-assay LEU (HALEU).

Although uranium-235 and uranium-238 are chemically identical, they have different physical characteristics, most notably mass. The U-235 atom has an atomic mass of 235 units due to its 92 protons and 143 neutrons in its nucleus. The U-238 nucleus has 146 neutrons—three more than the U-235 nucleus—in addition to its 92 protons, giving it a mass of 238 units.

The isotopes may be separated due to the mass difference between U-235 and U-238, which also makes it possible to "enrich" or raise the proportion of U-235. This slight mass difference is used, directly or indirectly, in all current and historical enrichment procedures.

Some reactors employ naturally occurring uranium as its fuel, such as the British Magnox and Canadian Candu reactors. (By contrast, to manufacture at least 90% U-235, uranium needed for nuclear bombs would need to be enriched in facilities created just for that purpose.)

Uranium oxide from the mine is first transformed into uranium hexafluoride in a separate conversion plant because enrichment operations need the metal to be in a gaseous state at a low temperature.

To know more about Effusion please click here : brainly.com/question/22359712

#SPJ4

7 0
2 years ago
Other questions:
  • How many grams of iron, Fe, are reacted to form 16.0 grams of FeS (87.91 g/mol)
    11·2 answers
  • To make pickles, fresh cucumbers are soaked in a salt water solution called brine. how many liters of a 4% brine solution must b
    12·1 answer
  • A student is investigating the affect of different salts on melting points. Four patches of ice of equal size are roped off and
    9·2 answers
  • Petrolium is a mixture consisting mostly of​
    7·1 answer
  • A single gold atom has a mass of 197.0 amu. How many gold atoms are in a cube of gold that is 10.0 mm on each side (about the si
    10·1 answer
  • Question 5: Causes of Molecular Shape (3 points)
    7·1 answer
  • Imagine that a new planet was discovered in our solar system. Answer the following questions based on the patterns discovered by
    11·1 answer
  • Which term refers to the process by which land is worn away by natural forces or human activity
    5·2 answers
  • Pls help i need help with science what is the name of all satruns moons?
    10·1 answer
  • The following are electronegativity. What value should be where the M is?0.981.57M2.553.043.443.98No data
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!