Complete the sentences to describe the structure of DNA. The shape of the DNA molecule is called a double . The backbone of DNA is made of molecules and phosphate molecules. The "rungs" of DNA are made of .

Answers

Answer 1

Answer:

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people. The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.

DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder.

An important property of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases. This is critical when cells divide because each new cell needs to have an exact copy of the DNA present in the old cell.

DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.

The National Human Genome Research Institute (NHGRI), a part of the National Institutes of Health (NIH), provides a fact sheet Deoxyribonucleic Acid (DNA) that gives an introduction to this molecule.

StatedClearly offers a video introduction to DNA and how it works.

The New Genetics, a publication of the National Institute of General Medical Sciences, part of the NIH, discusses the structure of DNA and how it was discovered.

A basic explanation and illustration of DNA can be found on Arizona State University's "Ask a Biologist" website.

The Virtual Genetics Education Centre, created by the University of Leicester, offers additional information on DNA, genes, and chromosomes.

An overview of mitochondrial DNA is available from the Neuromuscular Disease Center at Washington University in St. Louis.

Answer 2

The shape of the DNA molecule is called a double helix. The backbone of DNA is made of sugar molecules and phosphate molecules. The "rungs" of DNA are made of four nitrogen bases that are adenine, thymine, guanine, cytosine.

What is DNA ?

The molecule found inside cells that contain the genetic information necessary for an organism's development and function. DNA molecules enable this information to be passed down from generation to generation.

DNA is made up of a series of molecules known as nucleotides. A nitrogen base, a sugar group, and a phosphate group are all present in each nucleotide. Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) are the four nitrogen bases that can be found in DNA (C). There are billions of DNA bases in human DNA.

It stores instructions for the production of larger molecules known as proteins. These instructions are stored within each of your cells and are distributed across 46 long structures known as chromosomes.

Thus, chromosomes are composed of thousands of shorter DNA segments known as genes.

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Related Questions

How do conduction and convection differ?

a Conduction can move through empty space to transfer heat; convection cannot.

b Conduction does not require objects to have direct physical contact; convection does.

c Conduction requires objects to have direct physical contact; convection does not.

d Conduction transmits heat through electromagnetic waves; convection does not.

Answers

conduction requires objects to have direct contact; convection does not.

Which stage follows anaphase I?

metaphase I
telophase II
anaphase II
telophase I

Answers

Answer: telophase 1

Explanation: in anaphase 1 the chromosomes are being pulled apart. The next stage of mitosis is telophase 1 where the chromosomes are surrounded by a new nuclear membrane and start breaking down.

Hope this helps!

Telophase I. The six stages of meiosis are prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis.

A chimpanzee and a pine tree have very little in common. However, because they are both living things, we can be certain that they both -

A .use the sunlight to make their own food.


B. travel with other members of their species.


C.are made up of one or more cells.


D .have a skeleton that allows them to move.

Answers

i think the answe is C i’m not postive tho

which one is a balanced equation and an unbalanced equation? picture and equation are in the picture. thanks!

Answers

Answer:

The first is balanced and the second is unbalanced.

Explanation:

Hope I helped! Please mark Brainliest!

Answer: 1st is unbalanced 2 is balanced

Explanation:

help me ill give you brainliest

Answers

The first one is 18.0 ! Just add both of them together!

HELP MEPLEASE SOMEONE REALLY REALLY REALLY SMART PLEASE
What is the mass of an atom with seven protons, seven neutrons, and eight electrons?
EXPLAIN:

Answers

Explanation: The atom is a nitrogen atom  and the mass of the atom is 14.0067 u.

Explanation: The atom is a nitrogen atom and the mass of the atom is 14.0067 u.

Pls help me I don’t understand it’s for my science class.

Plz check if correct and tell me wether each is element or compound

Answers

Answer:

gold pure substance heterogeneous

Gold pure substance Heterogeneous

Give a Convincing Argument that muscles are alive because they are made out of cells

Answers

I think they are alive bc they are in a living body with cells

The solid on the copper square after the experiment is called copper acetate. Write a word equation to represent what happened to substances in the experiment. Label the reactants and products in the equation.

Answers

Answer:

copper + acetic acid --> copper acetate

copper and acetic acid are reactants

copper acetate is the product

Which term refers to an element that conducts electricity at high temperatures, but not at low temperatures?



semiconductor

halogen

conductor

metal

Answers

Answer: metal

Explanation: it says element so conductor and semiconductor are out and a halogen is a group of gases on the periodic table so this brings up to a conclusion of metal.

NOTE: I am not a professional***

semiconductor

This is the answer

The frequency of a D-sharp sound wave in music is 380 Hz, and its wavelength is 0.95 m. What is the wave speed?

Answers

Answer:

462

Explanation:

Answer: I think is 380m wave speed

Explanation:

Which law is represented by the description:

The bottom domino is knocked out from a stack of dominoes when an outside force is applied.

1st Law of Motion
2nd Law of Motion
Or
3rd Law of Motion

Answers

Answer:

Si hay algo que sucedió entre ustedes raro o un comportamiento que tuviste con esa persona o que te vio hacer asi como le pudieron decir algo de ti que no le gustara a tu amigo hace que se comporte raro contigo

Explanation:

HELP ASAP/ If both crossing over and independent assortment occur during meiosis, which type of cells will result?

four genetically identical cells
four genetically different cells
two genetically identical cells
two genetically different cells

Answers

Answer:

sorry i am a month late but your answer will be b

Explanation:

i did the unit test review and got the answer right

Answer:

I think B

Explanation:

Which choice best describes the Law of Conservation of Energy? Group of answer choices Energy is lost and cannot be recovered. Energy cannot be created or destroyed. Energy cannot be transformed. Once energy is used, it cannot be used again.

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