Summarize the process of PCR in a diagram. Include all the steps, labeled and in the right order.

Answers

Answer 1

Answer:

Denaturation, Annealing and Extension are the steps of PCR.

Explanation:

There are three steps of PCR process.

1) Denaturation

2) Annealing

3) Extension

In the first step, the DNA denatures when they are allow to heat. In Annealing,  the process of polymerization occurs. Polymerase chain reaction (PCR) is a method which is used to formed or produce billions of copies of a particular DNA sample. In this process, monomers attached to one another to form polymers and the process is known as polymerization. In the extension, new strands of DNA are formed by using the old DNA strands as a template.


Related Questions

can a impact in one species over time can impact an ecosytem ?

Answers

Answer:

Yes

Explanation:

Yes, the impact on one species over time can impact ecosystem.

An ecosystem is consist of biotic and abiotic organisms. There is a major relationship between biotic and abiotic or biotic and biotic components.

The relationship between biotic and biotic components is called food chain, in which one organisms depends on others for their survival and balance the energy flow in the ecosystem. So impact on any one species in the food chain will impact the whole ecosystem.

For example: Plants are the producers in the food chain, and if plants will be impacted or destroyed over time, the consumers depending on the plants will die from starvation and disturb the energy flow in the ecosystem. Along with this, plants are also related to abiotic factors such as maintenance of oxygen and carbon dioxide in the atmosphere, so the balance of these gases will also get disturbed.

There are two primary models of the universe. One is the expanding model, which says that the universe is constantly increasing in size. The other is, the steady state model, which says that the universe is approximately constant in size and shape. What evidence would you expect to see if the expanding model were correct?

Answers

Answer:

Ok, suppose that the universe is expanding:

If the universe is expanding, then the distance between "fixed" points in the universe (we can set the fixed points as planets, galaxies, etc) would change with the time.

This means that, if the distance between the Earth and a given star or planet (that is not in our nearby region) should change as time goes by.

Now, this was actually observed:

There is something called the doppler effect:

In a short way, if an object is moving away, the light that comes from that object will have a red shift (it seems a little more reddish than it actually is)

If the object is moving towards us, the light that comes from the object will have a blue shift (it seems a little more blueish than it actually is)

Those shifts can be observed from the Earth, so from that is safe to conclude that the expanding model is actually correct.

Answer:

Observing objects in the sky that gradually move away from Earth could prove that the expanding model is correct.

Explanation:

Which of the following tissues would NOT be found in fibrovascular bundles?

Answers

Answer:

Phloem cells are hollow and nonliving, and they form a continuous pipeline that transports sugars.

hope this answer is correct ...

A phosphodiester bond is used to: A. join two glucose molecules. B. join two nucleotides into a polynucleotide. C. join glycerol to fatty acids. D. join two amino acids into a polypeptide.

Answers

The answer is C because that’s what its used

To join two nucleotide in a polynucleotide, phosphodiester bond is used. The correct option is B.

What is phosphodiester bond?

A bond formed by a sugar group and a phosphate group; these bonds make up the sugar-phosphate-sugar backbone of DNA and RNA.

A diester bond connects two different nucleotides to form the nucleotide polymers DNA and RNA.

Thus, the correct option is B.

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Which interaction is an example of commensalism?
O A. Insects helping plants reproduce while eating the nectar in their
flowers
O B. Bacteria living inside a human's stomach and making the person ill
C. Birds building nests in the branches of trees
O D. Mosquitoes eating the blood of cows and passing on a disease
SUB

Answers

C. The birds benefit from the shelter of the tree branches without harming the trees

Answer:

C

Explanation:

Commensalism is where one organism benefits while the other is neither harmed nor benefited.

A - Both parties benefit

B - Bacteria benefit, the human is harmed

C - Birds benefit, the tree neither

D - Mosquitoes benefit, cow is harmed

Please help me come up with an answer for this question thankyou so much! Compare and contrast the processes of cellular respiration and photosynthesis. Think of as many similarities and differences as you can (things to consider: inputs and outputs, the role of energy, the types of organisms that do each process, the location within cells)

Answers

Explanation:

The end result is glucose, with oxygen being the waste product. The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart.

Estimate the volume of a human heart (in mL) using the following measurements/assumptions: Blood flow through the aorta is approximately 11.2 cm/s The diameter of the aorta is approximately 3.0 cm Assume the heart pumps its own volume with each beat Assume a pulse rate of 67 beats per minute.

Answers

Answer:

The correct answer is 70.92 ml.

Explanation:

Based on the given question, the rate of the flow of blood through the aorta (v) is 11.2 cm/s.  

The given diameter of aorta is 3.0 cm

Thus, the radius (r) of aorta will be, 3.0/2 = 1.5 cm

The cross-sectional area of the aorta (A) will be calculated by using the formula, πr²

= π ×(1.5)² cm²

= 2.25 π cm²

The pulse rate given is 67 beats per minute, therefore, time taken for 67 beats is 60 seconds, hence, time taken for 1 beat will be 60/67 second

Now the volume of the heart will be,  

= A × v × t

= 2.25 π cm² × 11.2 cm/s × 60/67 s

= 70.92 cm³

As 1 cm³ is equal to 1 ml. So, the volume of a human heart will be 70.92 ml.  

Which of the following statements is true about Mendel?

Answers

Answer: c

Explanation:

Hope it helps <3

I need help as soon is possible pls!!!! A physicist is studying light absorbance in the ocean. He graphs his data as shown below. What color of light would most likely be present at 200 meters below sea level, and why? Justify your answer by using the provided data.

Answers

Answer:

blue

Explanation:

if you look at the graph, it's asking which color would most likely be present 200 meters below sea level. The only color/bar that comes close, or in this case surpasses 200m, is the color blue.

The blue color of light would most likely be present at 200 meters below sea level because the wavelength of the blue light falls under the visible light spectrum.

What is Absorbance?

Absorbance may be defined as a quantity that can significantly be measured by the ability of a substance to absorb light of a specified wavelength. It is remarkably equal to the logarithm of the reciprocal of the transmittance.

According to the question and graph carefully, one can easily find out the light which has penetrated deep into the ocean is blue. Apart from this, blue light significantly has the shortest wavelength which means the highest energy.

Therefore, the color of light that has most likely been present at 200 meters below sea level is blue.

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Which of the following areas indicates the occipital lobe on the diagram below? Region A is the anterior (front) section. Region B is the medial (middle) superior (up) section. Region C is the posterior (back) section. Region D is the medial (middle) inferior (down) section. Region D Region B Region C Region A

Answers

Answer:

Region C is the posterior (back) section.

Explanation:

The occipital lobe is found at the back of the head.

Hope it helps.

Answer:

C the green highlighted part

Explanation:

Took the test

For a type of cat, short whiskers are dominant (S) and long whiskers are
recessive (s). The Punnett square below shows a cross between two cats.
What is the phenotype ratio for this cross?
sls
sssss
S
Ss
SS
A. O short, 4 long
B. 3 short, 1 long
C. 2 short, 2 long
D. 4 short, 0 long

Answers

The correct answer is option D) 4 short, 0 long.

What is the phenotype ratio?

A phenotypic ratio is a quantitative relation between phenotypes showing the number of times the frequency of one phenotype correlates with another. When a researcher would like to obtain the gene expression for generations of an organism, they use the phenotypic ratio obtained from a test cross.

What is the phenotype ratio example?

There are two dogs that are heterozygous for black coat color. In this breed, black fur is dominant over white fur. Thus, heterozygous dogs and homozygous dominant dogs have the same phenotype of black fur and homozygous recessive individuals have white fur.

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Answer:

C. 2 short, 2 long

Explanation:

Which of the following phenotypic classes reflect offspring that were generated as a result of a recombination event?
a. vestigial wings, red eyes
b. vestigial wings, purple eyes
c. full wings, red eyes
d. full wings, purple eyes

Answers

Answer:

The correct options are: A " vestigial wings, red eyes" and D "full wings, purple eyes"

Explanation:

female parent: vg+pr+/vg pr

(phenotype - full winged and red eyes)

male parent:  vgpr/vgpr

(phenotype - vestigial winged and purple eyes)

Of these traits, vestigial wings and purple eyes are recessive traits. Hence, when a recombination event occurs, the offspring can potentially have a wild type trait paired with a recessive trait.

Which phrase best describes the biosphere? the rocks on land and in the water the plants on land and in the water the animals in the air, on land, and in the water the organisms in the air, on land, and in the water

Answers

Answer:

the organisms in the air, on land, and in the water

Explanation:

bc i saw quizlet

Answer:

d

Explanation:

edge 2021

Through which vascular tissue do water and nutrients get transported to reach the leaves during transpiration? cuticle parenchyma xylem phloem

Answers

Answer:

Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.

Explanation:

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Answer:

C. xylem

Explanation:

i tack test

Which of these lymphoid organs destroys bacteria before it can breach the intestinal wall and generates "memory" lymphocytes for long-term memory?

Answers

Answer:

Peyers patches

Explanation:

Peyers patches are group of lymphoid follicles found in the ileum of the small intestine.

This part of lymphatic system form part of immune system that help to control bacteria population in the small intestine and prevent the growth of pathogenic bacteria in the small intestines. It plays an important role in immune surveillance where it recognises pathogenic bacteria and destroy the bacteria.

It is a lymphoid organs destroys bacteria before it can breach the intestinal wall and generates "memory" lymphocytes for long-term memory because it form the part of the immune system which help to fight infection or foreign substances in the body, also by generating lymphocytes which is a white blood cells of the immune system which generate long term memory of foreign pathogens and destroying it.

After the centromeres separate during mitosis, the sister chromatids, now called _______, move toward opposite poles of the spindle.

Answers

Answer:

(E) daughter chromosomes

Explanation:

Suggest an intracellular regulatory molecule (from your text) that growth factors might stimulate to control cell division. Please describe how it works.

Answers

Answer:

E2F transcription factors  

Explanation:

The E2F transcription factors (TFs) encode intracellular factors associated with the control of the cell cycle. E2F are TFs that bind to promoter consensus sequences in order to activate transcription. These TFs control the expression of target genes involved in cell proliferation including, among others, genes for DNA replication and mitotic activation. Moreover, the E2F proteins also may act as a link between cell fate and the cell cycle. The retinoblastoma (Rb) is a protein that modulates the activity of the E2F family of TFs, and it has been shown that the Rb/E2F pathway is a key molecular mechanism associated with cell proliferation.

Which type of cell can duplicate indefinitely?

Answers

Answer:

Embryonic stem cells

Explanation:

Answer:b

Explanation:

is the formation of a new species from an existing species and can occur in two phases.

Answers

Answer:

Meiosis

Explanation:

Meiosis is the formation of a new species from an existing species and can occur in two phases.

Hope it helps.

Answer:

Speciation

Explanation:

"Speciation is the formation of a new species from an existing species and can occur in two phases." (Correct on edg)

Burning fossil fuels is associated with a. climate cooling periods b. an enhanced greenhouse effect c. increased solar activity d. increased solar reflectivity

Answers

Answer:

B. An enhanced greenhouse effect

Explanation:

When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming.

Already the average global temperature has increased by 1C.

Answer:

An enhanced greenhouse effect

Explanation:

Fossil fuels release carbon dioxide and nitrous oxide, both of which are greenhouse gases. This leads to greenhouse gas in the atmosphere and which is the greenhouse effect.

During which period did humans first appear on Earth? Quaternary Neogene Paleogene Cenozoic

Answers

Answer:

the answer is actually Quaternary, please double check your answer before giving them out to people

we dont want them to get a bad grade

Explanation:

i took the test

E2020

HELP PLS ANSWER THE ONES SHADED WITH BLUE (1,2,3,4,5,6,7,8,9)

Answers

Answer:

Definitions are given below.

Explanation:

1. Cytoplasm: It is a fluid made up of salt, water and nutrients. it provides medium for the organelles which is suspended in the cytoplasm.

2. Endoplasmic reticulum: It is responsible for the formation of protein and transport proteins from one place to another in the cell.

3. Golgi bodies: It modifies the protein which is received from endoplasmic reticulum and sent the protein where it is needed.

4. Mitochondria: It is also called powerhouse of the cell. it is responsible for the production of energy from breakdown of glucose molecule.

5. Lysosomes: It helps in breakdown of various materials and also protect the body from viruses and bacteria.

6. Cell membrane: It separates the inner environment of the cell from the external environment and also helps in protection.

7. Nucleolus: Its main function is to produce ribosomal units from proteins.

8. Vacuole: It is the storage house of the cell where food and nutrients are stored which are necessary for the survival of the cell.

9. Cell wall: It provides protection to the cell as well as provides structure to the cell.

Which mode of genetic recombination is matched correctly with its description? transduction—virus transfers genes from one bacteria to another conjugation—involves splitting of one cell and results in two identical cells binary fission—requires direct cell-to-cell contact of bacteria transformation—uses a pilus to transmit genetic information between bacteria

Answers

Answer:

transduction—virus transfers genes from one bacteria to another

Explanation:

Transduction is a mechanism of recombination where DNA fragments are inserted into bacteria by a viral vector. The mechanism of transduction is commonly used by molecular biology laboratories to insert gene fragments into both bacterial and mammalian cells.  

Conjugation is the genetic mechanism in which bacteria transfer genetic information among them by direct contact.

Binary fission is the most common type of asexual reproduction in bacteria. In binary fission, the DNA molecule is replicated and, subsequently, the bacterial cell is divided into two daughter cells with identical genetic material.

Finally, the transformation is the mechanism of horizontal gene transfer in which one bacterium takes up genetic information into the surrounding environment and incorporates it into its genome.

Answer:

transduction—virus transfers genes from one bacteria to another

Explanation:

edge

In addition to the natural loss of muscle mass that occurs as we move into our older years, changes in lifestyle, such as transition from employment to retirement, also account for a decrease in ___________.
a. stress response
b. energy needs
c. hormones
d. brain activity

Answers

Answer:

B. Energy needs

Explanation:

As an individual ages there is a characteristic natural loss of muscle mass that occurs and increases as they move into older years. Changes in lifestyle, such as transition from employment to retirement, also account for a decrease in energy needs. This is because there is less amount of work done during retirement than when an individual is actively working.

The less amount of work is the reason why there is also a corresponding decrease in the energy needs.

Pedigrees are used to help geneticists understand how traits are inherited between generations. The Romanovs, a Russian royal family, had a history of hemophilia, a sex-linked disorder that is determined by a recessive allele on the X chromosome.

A genetic pedigree is shown. Irene is a carrier. Her husband is not a carrier. Her children Waldemar and Henry have hemophilia.

What is the best evidence to prove that Irene was heterozygous for hemophilia?
Alice carried the recessive allele.
Alexandra carried the recessive allele.
Frederick carried the recessive allele.
Waldemar carried the recessive allele.

Answers

Answer:

Waldemar carried the recessive allele.

Explanation:

The carrier is the individual that has the affected allele or mutation but does not express the trait, or might express it in different levels. Although, as the person carries the mutation, she or he might transmit the genetic mutation associated with a disease to the progeny.  In general, these diseases are inherited as recessive traits.

So, in the exposed example we know that:

hemophilia is a sex-linked disorderhemophilia is determined by a recessive allele on the X chromosome.Irene is a carrier.Her husband is not a carrier.Her children Waldemar and Henry have hemophilia.

If Irene is a carrier, this means that she is heterozygous and that her genotype is X⁺X⁻ (Being the symbol + the dominant allele, and - the recessive one for that expresses the trait)

The fact that Irene´s husband is not a carrier means that his genotype is X⁺Y

Their boys Waldemar and Henry have hemophilia, so both their genotypes are X⁻Y

The best evidence to prove that Irene was heterozygous for hemophilia is that Alice carried the recessive allele.

Alice is Irene´s Mother, and she is a carrier as well. Irene´s father, Louis, is not a carrier, so she could have inherited a dominant allele from her father and a recessive allele from her mother, X⁺X⁻, or she could have inherited two dominant alleles from both her parents X⁺X⁺. This is not proof enough of Irene being heterozygous. The fact that Alexandra, Irene´s sister, was also a carrier does not say anything about Irene´s genotype, because they could both share the same genotype or not. This is not proof of Irene being heterozygous.Frederick (her brother) was hemophilic.  He received a recessive allele from Alice, but this does not say anything about Irene´s genotype.   The fact that Waldemar (her son) was hemophilic, is the best evidence to prove that Irene was heterozygous for hemophilia. Walderman received the Y chromosome from his father and an X chromosome from his mother. The X chromosome that he received from his mother carried the recessive allele for the trait, and this is why he had hemophilia. This means that there is no best evidence for Irene´s genotype than her son´s genotype.

 

Jacob calls his friend Mark to tell him the news, and to Jacob's surprise, Mark has heard of MSUD. In fact, Mark says that his wife is a carrier so he got tested to see if he was a carrier as well. After getting tested, Mark and his wife decided to have children because there was no increased risk of their child getting MSUD. Based on this information, Mark and his wife must have the genotype: g

Answers

Answer:

Explanation:

Since Mark's wife was a carrier, it means that she is heterozygous for the trait. And after Mark got tested, they decided to have children due to no increased risk if they do have children, it means the condition is not an autosomal dominant condition but a recessive condition because if the condition is dominant, only one copy of the affected allele is needed to increase risk.

Thus, with a no increased risk, it means Mark is normal i.e. carries no copy of the recessive allele.

Which statement best describes the relationship of photosynthesis and onorgy?
The process of photosynthesis is onergy storing bocause the process converts light onorgy into chemical energy,
which is stored in the bonds of glucoso,
The process of photosynthesis is onergy-releasing because the process convorts light onorgy into froo onorgy that
can be used for cell functions.
The process of photosynthesis is onergy conserving because no onergy is used throughout the process of forming
glucose and oxygen molecules,
The process of photosynthesis is onergy-wasting because photosynthesis is an inofficient process that doplotos
the cell of energy stored in the bonds of glucose.

Answers

The process of photosynthesis is onergy storing bocause the process converts light onorgy into chemical energy,

The correct answer is the first one,
The process of photosynthesis is energy storing because the process converts light energy into chemical energy,
which is stored in the bonds of glucose.

This is because photosynthesis is a storing process.

The___is the fluid component of blood.

Answers

Answer:

Plasma

Explanation:

The liquid portion of blood is called plasma, and it makes up more than half of our blood, precisely 55 percent.

Plasma is a light yellow, clear-ish liquid comprised of water, protein, salts, ions, nutrients and wastes.

Plasma helps deliver nutrients, hormones, enzymes, and proteins to other parts of the body. Additionally, cells deposit waste into the plasma. Plasma also carries the other solid parts of blood throughout the body.

Answer:

The Plasma is the fluid component of blood

Explanation:

I got it right on my test

The medulla oblongs ya controls the contraction and relaxation of the blank causing the lungs to inflate and deflate during breathing.

Answers

Answer:

This question includes some errors, the question should be written as:

The medulla oblongata controls the contraction and relaxation of the ______ causing the lungs to inflate and deflate during breathing.

Although there are no options, the answer is generally RESPIRATORY MUSCLES i.e. diaphragm and intercostal muscles

Explanation:

Breathing is an involuntary action required to take place in order to get oxygen into the system and carbon dioxide out of the system. However, the process of breathing is neurally controlled by brain portion called RESPIRATORY CONTROL CENTERS.

The Medulla oblongata located in the hindbrain is one of the two respiratory control centers (the other being the PONS). The medulla sends nerve signals to the muscles responsible for bringing about the ventilation process i.e. the DIAPHRAGM and INTERCOSTAL MUSCLES.

This nerve impulse brings about the contraction of the diaphragm, which is the major respiratory muscle, and intercostal muscle causing the lungs to inflate and allow the entry of oxygen-containing air. On the other hand, it also brings about the relaxation of these muscles causing the lungs to deflate allowing the expelling of air.

Which of these is an example of a haploid cell?

Answers

Answer:

Gametes

Explanation:

Gametes are an example of a haploid cell and are produced as a result of meiosis.

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Edwin saw a gang of teenagers throw stones at his car. He saw the damage this caused and became very angry. He chased the teens, and although he could not get hold of them, he was able to recognize them. Edwin knew that it would be better to seek compensation for the damage done, rather than trying to retaliate. He reported the incident to the police, and swore he would sue the parents of the boys to make them pay for the damages to the car. Which of the following was the antecedent event in Edwin's emotion-charged situation? A. Being unsuccessful in catching the teens B. Chasing the teens C. Seeing the teens throw stones at his car D. Becoming angry To determine the concentration of chloride ion (Cl-) in a 100 mL sample of ground water, a chemist adds a large enough volume of AgNO3 solution to precipitate all Cl- as AgCl. The mass of the resulting precipitate is 93.9 mg. What is the chloride ion concentration in milligrams of chloride per liter of ground water Two years ago Joshua Ryan bought 100 XYZ at $60 per share. While he held the stock it paid dividends of $1 the first year and $1.50 the second year. Joshua sold the shares at $40 per share after a 2 for 1 stock split. How much gain or loss did he incur per share for tax purposes If a decision variable is not positive in the optimal solution, its reduced cost is _______ Group of answer choices its dual price. the amount its objective function value would need to improve before it could become positive. what its objective function value would need to be before it could become positive. zero. Of the books in the Hogwarts Library, 1/4 came from Hermione and 8 came from Luna. Of the rest, 14 were Rons, 1/2 were Ginnys. How many books are there in the library?Will mark brainlist Which one of the following would most likely have a positive linear correlation coefficient? A. temperature of a refrigerator compared to the number of items inside of it B. amount of money spent on baby food as a child ages C. length of a driveway compared to number of cars owned D. distance driven in a car compared to the hours spent driving hi :) , if the density of an object is the same as water , will the object float or sink? hair cells have a unique electrochemical gradient that, in a way, is very different from your average neuron. How so?A. The amount of calcium is very high in the cellB. sodium travels both directionsC. It uses GABA to depolarize its ciliaD. potassium is the positive charge carrierE. sodium hyperpolarizes the cell Congress enacted a statute appropriating money to the states on condition that the states use the money to support "public performances of classical ballet open to the public." The statute provided that the money was not to be used to support any other type of dance, and that tickets to any performance paid for with these funds were to be distributed to the public on a first come, first served basis. A state that accepted a grant of $500,000 under the federal statute gave half of the grant to a state-sponsored ballet company. The company had been started 20 years earlier as part of a state effort to bring culture to poor, inner-city areas. By state law enacted when the company was formed, no less than 35% of the tickets to each performance of the ballet company must be distributed to the inner-city school systems to be given to minority school children. Is the state's method of distributing tickets to the state ballet company's performances constitutional? A company pays its employees an average wage of $17.90 an hour with a standard deviation of $1.50. If the wages are approximately normally distributed and paid to the nearest cent, the highest 2.5% of the employees hourly wages is greater than what amount please help me please!!! How many solutions does this system have? x-y=-4 3x+y=8 one two an infinite number no solution is the folllowing shape a square? how do you know How does Richard Lovelace depict war in this excerpt from 'To Lucasta, Going to the War 4) Jacqueline, Hanry, and Stanley bought a pizza pie to share for dinner. Harry ate1/2 of the pie, and then Jacqueline ate 1/2 of what was left. After Jacquelinefinished, Stanley ate 1/2 of what was left of the pie. What fractional part of thepizza pie was left after Stanley finished eating? Help please Suppose that an issuing bank pays on documents that are conforming to the requirements of the letter of credit, but the seller has shipped worthless goods to the buyer. Which of the following statements, if any, are true? a) As long as the documents strickly comply with the letter of credit requirements, the bank will not have to reimburse the buyer b) If there is fraud in the transaction, the bank will have to reinburse the buyer and seek its remedies against the seller c) The strick compliance insulates the bank from liability, since it assures the bank that the underlying contract between the buyer and seller is entirely independent from the letter of credit contract d) A and B An organization with a(n) _____ structure operates much like a multinational corporation, but subsidiaries depend on headquarters more for process and production decisions. Group of answer choices a rectangular fish tank is 50 cm long, 40 cm wide, and 30 cm high.a) how many cubic centimeters of water will the tank hold?b) how many milliliters of water will the tank hold?c) how many liters of water will the tank hold? The graph of a parabola in the xy-plane hasx-intercepts at 3\5and -1/2 Which of thefollowing could be the equation of the parabola?A) y = (5x - 1)(2x + 3)B) y = (5x + 1)(2x - 3)C) y=(5x - 3)(2x + 1)D) y=(5x+3)(2x - 1) 11. Which of the following is part of the community lifelines that represent the most basic services a community relieson?A. Grocery and Fast FoodB. Child careC. InternetD. Food, Water and Shelter