As the citric acid cycle proceeds from the entry of acetyl CoA to the production of succinate, two carbons enter the cycle and two carbons are released as CO2. Why is the cycle not considered complete at this point?

Answers

Answer 1
Answer:

The oxaloacetate used to initiate the cycle must be regenerated.

Explanation:

Krebs cycle start from the condensation of acetyl-CoA and oxaloacetate.
Oxaloacetate must be regenerate to complete 1 cycle.
Answer 2

Answer:

Because ATP is not produce yet.

Explanation:

The cycle is not considered as complete because the main product i. e. adenine tri phosphate (ATP) is not produced yet. The main product of cellular respiration is the production of energy in the form of ATP with the help of oxygen whereas water and carbondioxide are the byproduct as well as waste material which can be removed with the help of breathing so that's why the cycle is considered as incomplete.


Related Questions

A solar eclipse occurs when Earth passes into a __________ moon's shadow. A lunar eclipse occurs when a _________ moon passes into Earth's shadow.

A. crescent; gibbous
B. gibbous; crescent
C. new; full
D. full; new

Answers

Answer:

answer might be d

hope it helps you : )

Explanation:

Can someone do me my Biology project I'll pay you $30

Answers

Answer:

what is your bio project on

Explanation:

Look use Socratic it really help

The inside of the cell contains low concentrations of _____ and high concentrations of _____

Answers

Answer:

low glucose and high starch

Explanation:

a cell contains 5% glucose, 10% starch, and 5% protein. the solution outside of the cell contains 10% glucose, 5% starch, and 20% protein.

Which medium grain sized metamorphic rock is composed mostly of the same mineral as the sedimentary rock limestone?

Answers

Answer:

Explanation:

Marble

Calcite-containing dolostone has undergone a metamorphosis to become marble (or dolomite), white marble develops when the limestone is pure.

What is a metamorphic rock?

Calcite or dolomite recrystallization often results in bigger interconnecting crystals. Despite having a similar appearance to quartz, marble and quartzite are more softer than quartz.

By changing limestone under heat and pressure, marble is a metamorphic rock. As interlocking grains expand, the calcite in the limestone changes, and the original limestone's layers and fossils vanish.

Therefore, marble, when limestone, a sedimentary rock, is buried for millions of years under great pressure and heat, marble, a metamorphic rock, can be created.

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True or false? A prokaryotic cell is more complex than an eukaryotic cell.​

Answers

False, Eukaryotic cells are more complex than prokaryotes, and the DNA is linear and found within a nucleus. ... The complex eukaryotic cell ushered in a whole new era for life on Earth, because these cells evolved into multicellular organisms.

Answer:

False, prokaryotic cell is smaller and less complex, a eukaryotic cell makes their own power plant called mitochondria

True or false
DNA replicated during interphase

Answers

Answer:

True i think

Explanation:

hope this helps tell me if im right or wrong

What type of mutation is shown below original dna- CTACTCGTGGGT Mutated Dna- CTACTCCGTGGGT​

Answers

Answer:

The type of mutation would be the frame shift mutations

HELP ME ASAP!!!
Select the correct answer.
What are ectothermic species?
A. species that can generate heat from their internal processes
B. species that live in cold climates
C. species that derive heat from the environment
D. species that live in the ocean

Answers

The answer is C

i hope you have a good day

5.5 mg equals how many kg

Answers

Answer:

5.5e-6 or .0000055

Explanation:

just move the decimal back 6 times to get the answer.

Hope this helps ya! Keep smiling!

Answer:

It equals 6 kg

Explanation:

A molecule of DNA is made up of _________.
Question 19 options:

a.amino acids and proteins

b.ATP and enzymes

c.paired nucleotides

d.receptor enzymes

Answers

c. paired nucleotides

After pollen lands on the stigma of a flower, which of the following happens first?

Fertilization takes place.
An embryo grows inside the ovary.
The pollen grows a tube to the ovary.
The pollen units with an egg cell.

Answers

Answer:

The pollen grows a tube to the ovary.

Explanation:

After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule.

Answer:

The pollen grows a tube to the ovary.

help mee33333333 plssss​

Answers

Answer:

Explanation:

Brain control

I cannot see the full thing

Scientists can use a virus as a vector to insert a gene directly into a target cell in someone's body. What is this technique called?

Answers

Answer:

Gene therapy

Explanation:

Gene therapy is the addition of new genes to a patient's cells to replace missing or malfunctioning genes. Researchers typically do this using a virus to carry the genetic cargo into cells, because that's what viruses evolved to do with their own genetic material

How is a compound different than the elements that make up the compound ?

Answers

Answer: An element is a material that consists of a single type of atom.

Explanation: Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.

The synthesis of cholesterol is a process that involves over 30 different steps. Which step is the rate-determining step of cholesterol synthesis?1) The conversion of mevalonic acid to isopentenyl pyrophosphate2) The conversion of squalene into squalene 2,3-epoxide by squalene monooxygenase.3) The condensation of two acetyl-CoA molecules to acetoacetyl-CoA by thiolase.4) The conversion of HMG-CoA to mevalonate by HMG-CoA reductase.

Answers

Answer:

The conversion of HMG-CoA to mevalonate by HMG-CoA reductase

Explanation:

Cholesterol is one of the steroids found in the cell membranes of the eukaryotes, mainly in animal cells. It has a long fatty acid chain that is derived from the acetyl CoA. Biosynthesis of cholesterol includes four steps. The first step is the condensation reaction that forms mevalonate from the three acetate residues. The mevalonate is a six-carbon substance. It is followed by the formation of the isoprene units from the mevalonate.  

The first step of the cholesterol biosynthesis that forms mevalonate from the acetate is a rate-limiting step. First, two molecules of acetyl CoA react to form acetoacetyl-CoA. It is followed by the joining of the third acetyl CoA to form HMG-CoA, a compound with six carbon atoms. The synthesis of the HMG-CoA from acetoacetyl-CoA is catalyzed by the HMG-CoA synthase. The HMG-CoA is then reduced into mevalonate, a reaction catalyzed by HMG-CoA reductase. Here, two molecules of NADPH serve as electron donors.  

The pathway of cholesterol biosynthesis is regulated by the concentration of the cholesterol present in the cell and the pancreatic hormones. Accordingly, the expression of the gene encoding HMG-CoA reductase is regulated to determine the rate of the pathway, making this step a rate-determining step.

HMG-CoA reductase is present in two alternative forms: the phosphorylated form is the inactive form while the dephosphorylated form is the active form of the enzyme.

When the cholesterol levels are high, the hormone glucagon triggers the inactive of the enzyme by its phosphorylation. This covalent modification is reversible and the enzyme is dephosphorylated under the influence of hormone insulin when the intracellular cholesterol levels are low. In this way, covalent modification of the enzyme HMG-CoA reductase regulates the cholesterol biosynthesis.  

What organelles are most directly involved in transporting materials out of the cell?
A. Nucleus and Ribosomes
B. Chloroplast and Mitochondria
C. Cell Membrane and Cell Wall
D. Golgi Apparatus and Cell Membrane

Answers

Answer:

C. Cell Membrane and Cell Wall

Explanation:

Which term describes the resting phase of the cell cycle?

Answers

Answer:

 More appropriately called interphase. The interval in the cell cycle between two cell divisions when the individual chromosomes cannot be distinguished, interphase was once thought to be the resting phase but it is far from a time of rest for the cell.

Select all of the organ systems that are directly part of our immune system? Digestive System Respiratory System Circulatory System Lymphatic System Immune System Excretory System Endocrine System Nervous System Integumentary System Skeletal System Muscular System Reproductive System

Answers

Answer:

organs are digestive system, respiratory, circulatory endocrine.

Explanation:

these systems helps to function in our body if the immune system is stronger to fight from diseases.

The organ systems that are directly part of our immune system are the digestive system, respiratory system, Lymphatic System, and circulatory and endocrine systems.

What is the role of the Immune system?

The immune system plays a critical role in defending your body against pathogens, toxic chemicals, and cell modifications that could make you ill. Toxins and bacteria, viruses, and other types of germs are some of them.

The immune system includes the lymphatic system, which is crucial for the immune system to function properly since, without it, the immune system would not function at all.

To combat risks to your health, our immune system uses special structures. By transporting immune cells to their destination, the circulatory system helps your immune system.

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Which mRNA modification is likely absent if the mRNA is degrading prematurely from the 5 end of the mRNA?1) splicing together of exons.2) addition of the 3' polyadenylated tail.3) addition of the 7-methylguanosine cap to the 5 end.4) RNA editing.5) removal of introns.

Answers

Answer:

3) addition of the 7-methylguanosine cap to the 5 end

Explanation:

The 7-methylguanosine (m7G) cap is a modified methylated version of the Guanosine (G) nucleotide which is located on the 5′-terminus of the eukaryotic messenger RNA (mRNA). The m7G cap plays a key role in mRNA translation in eukaryotic organisms, from yeasts to mammals. During mRNA processing, m7G cap is added at the 5' end in order to protect mRNA from degradation by nuclease enzymes. Moreover, this cap also enables the proper attachment of the mRNA molecule to the ribosome during protein synthesis.

A gene carries the ____ for a trait

Answers

Answer:

Code

Explanation:

CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU !!!​

Answers

Answer:

economic

Explanation:

Energy and oxygen are created from visible sunlight during the __________.

Answers

Answer:

Photosynthesis? I guess.

Answer:

During photosynthesis

How much land do farms take up in the United States?


over half of all the land in the nation

half of all rural land

less than half of the Midwest

half of all the land in the lower 48 states

Answers

Answer: Source: USDA NASS, 2012 Census of Agriculture. changed little, declining from 922 million acres in 2007 to 915 million acres in 2012 (or 40.8 percent of U.S. land to 40.5 percent). The average size of U.S. farms in 2012 was 434 acres, 4 percent larger than five years earlier.

Food production takes up almost half of the planet's land surface and threatens to consume the fertile land that still remains, scientists warn. The global impact of farming on the environment is revealed in new maps, which show that 40 percent of the Earth's land is now given over to agriculture.

over half of all the land in the nation

Explanation:

Answer: over half of all the land in the nation

Explanation:

just did it

Which of the following is true of the Situational Leadership Model? a. It is a powerful, rigid tool that is based on the relationship between different types of followers. b. It allows leaders to approach coaching and influence opportunities through the lens of task-specificity. c. It fails to provide leaders with an understanding of the relationship between an effective style of leadership and the level of readiness that followers exhibit for a specific task. d. It requires leaders to make generalizations about a follower's overall level of ability and motivation.

Answers

Answer:

The correct answer is - b. It allows leaders to approach coaching and influence opportunities through the lens of task-specificity.

Explanation:

The situational leadership model is a model that deals with various aspects and adaption for better leadership. It helps to influence the peer of the team members and create new opportunities.

It considers different variables in the workplace and situation. Based on condition, situation, and other variables they can choose the style of leadership style will be best depends on their goal or task-specific.

Thus, the correct answer is - b.

Marking PEOPLE AS BRAINLIST

what is the purpose of mitosis

Answers

Answer:

the purpose of mitosis is that the new cell can divide in to two new cells

Explanation:

Which of the following represents an activity within a population?​
a.
​the absorption of nitrogen by bacteria and converting it to a form useful to plants
b.
​moss growing on the north side of a large pine tree
c.
​a virus causing rabies in a dog
d.
​a peacock spreading and shaking his feathers to attract a female
e.
a fox consuming a rabbit​

Answers

Explanation:a peacock spreading and shaking his feathers to attract a female

​A peacock spreading and shaking his feathers to attract a female represents an activity within a population. So, the correct option is (D).

What is Population?

Population is the number of people in a single area, be it a city or town, region, country, continent or the world. A population is any complete group that has at least one characteristic in common. They are not just people.

It may consist of, but is not limited to, people, animals, businesses, buildings, motor vehicles, farms, objects or events. It is an average calculated from an entire group, distribution, or population that is obtained by dividing the sum of all population variables by the total number of variables in the population.

Here μ is the population mean. ∑X is the sum of all the observations in the space.

Thus, ​a peacock spreading and shaking his feathers to attract a female represents an activity within a population. So, the correct option is (D).

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PLS HELP ASAP PLZZZZZZ

Answers

Answer:

The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins. In reality, there is much more to the RNA story

Answer:

A

Explanation:

tRNA is a major component in protein synthesis.

DNA and RNA are nucleic acids made up of long strands of 100's of nucleotides. What is the only difference in each nucleotide?

Answers

Answer:

Nucleic acid types differ in the structure of the sugar in their nucleotides–DNA contains 2'-deoxyribose while RNA contains ribose (where the only difference is the presence of a hydroxyl group).

Explanation:

Which type of molecule that can be found in living things

protein
carbohydrate
rat
water

Answers

Answer:

Carbohydrate and protein

Explanation:

I think the carbohydrate and protein can be found in living things

Which of the following molecules directly participates in the process of translation?
Which of the following molecules directly participates in the process of translation?
mRNA, DNA, and rRNA
mRNA, tRNA, DNA, and rRNA
mRNA, tRNA, and rRNA
mRNA, tRNA, and DNA

Answers

Answer:

mRNA, tRNA, and rRNA

Explanation:

Translation is the second process of gene expression involving the synthesis of proteins from mRNA strand in the ribosomes. mRNA is the template for the translation process to occur. However, other certain molecules are necessary for the occurrence of translation.

The molecules that directly participates in the process of translation include:

- mRNA, which is transported from the nucleus into the cytoplasm (ribosomes) to be read.

- tRNA, this is a type of RNA present in the ribosomes whose function is to read the codons of the mRNA and carry corresponding amino acids to the peptide chain.

- rRNA, is another type of RNA that makes up the ribosomes and functions in the synthesis of proteins from the amino acids.

mRNA, tRNA, and rRNA directly participate in the process of translation.

During gene transcription, a specific sequence of DNA called gene is utilized as a template to create a messenger RNA (mRNA).

This mRNA then travels to the ribosomes where is used to create a protein by a process called translation.

The ribosome is a ribonucleoprotein complex consisting of proteins and ribosomal RNA (rRNA) sequences.

The triplets of nucleotides or 'codons' in the mRNA indicate the linear order of amino acids that will be added to the protein.

The transfer RNAs (tRNAs) are molecules that transport specific amino acids to the ribosomes and pair them via anticodon sequences that match the codon in the mRNA.

In conclusion, mRNA, tRNA, and rRNA directly participate in the process of translation.

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