What kind of bond holds the sugar-phosphate backbone of DNA together?

Answers

Answer 1

Answer: Covalent bonds or phosphodiester bonds.

Explanation:

Bases are held together by hydrogen bonds, and the DNA backbone is held together by phosphodiester bonds.


Related Questions

what process is responsible for the absence of glucose and amino acids in urine

Answers

Answer:

The force of hydrostatic pressure in the glomerulus (the force of pressure exerted from the pressure of the blood vessel itself) is the driving force that pushes filtrate out of the capillaries and into the slits in the nephron

Selective reabsorption can be considered the process responsible for the absence of glucose and amino acids in urine.

What is selective reabsorption?

The selective reabsorption mechanism allows the absorption of different substances including glucose and amino acids in the urine.

This reabsorption occurs after filtration in the capillaries of the urinary system.

The filtration and excretion of waste substances are associated with the formation of urea.

In conclusion, selective reabsorption can be considered the process responsible for the absence of glucose and amino acids in urine.

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The DNA strand and pre-mRNA strand are anti-parallel. With this in mind label the 3' and
5' ends of the pre-mRNA strand in Model 1. Where would i put it??

Answers

Answer:

I think the right side is 3 prime and left sde is 5 prime

Explanation:

Because the process of transcription takes place in nucleus so it should be put inside the nucleus.

What is nucleus?

In genomics, a nucleus is a membrane-enclosed organelle within a cell that houses the chromosomes.

What is Transcription?

The process in which  information of a strand of DNA is copied into a new m RNA molecule is known as Transcription.

The  enzyme responsible for transcription is RNA polymerase.

Transcription start when RNA polymerase binds to a promoter region at the start of a gene directly or through helper proteins.

Initiation, Elongation, and termination are the three steps of transcription.

Transcription is carried out with the help of enzyme RNA polymerase and some proteins known as transcription factors.

Enhancer and promoter sequences are the  DNA sequences on which transcription factors attach to initiate the transcription process by directing  RNA polymerase to the correct transcription site.

The transcription initiation complex is made up of transcription factors and RNA polymerase working together.

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Which conclusion about the origin of life could be drawn from the potential results of this experiment?






Life assembled from chemical building blocks.


Life began when water vapor became electrified.


Life evolved from the DNA of simple unicellular organisms.


Life began when salt water caused a mutation in an ancient virus.

Answers

Answer:

Life assembled from chemical building blocks.

Option 1

Hope it helps!

1 1.3.1 Test (CST): Introduction to AP Environmental Science
Question 2 of 25
Which of these is a type of organic matter found in plants?
A. Oxygen
B. Water
C. Carbon dioxide
D. Sugar

Answers

If I’m not mistaken it’s A. Oxygen

Which statement is NOT true and female reproductive cycles:
a. The ovarian cycle and the menstral cycle are linked.
b. The endometrium is prepared as part of the menstral cycle to provide nutrients for the embryo that was developed during the ovarian cycle.
c. The ovarian cycle is extremely predictable and an extremely effective method of natural birth control
d. The menstral cycle starts with the onset of the release of the endometrium​

Answers

Answer:

Answer C

Explanation:

The cycle can sometime be irregular, not predictable. This method of natural birth control has can fail 25% of the time, not extremely effective.

how was Darwin able to create the fantailpigeon from the wild rock dove by using

Answers

Answer:

artificial selection

Explanation:

hope this helps

Para ya por favor Cual de los siguientes planteamientos se cumplen en relación a la energía en un ecosistema * A.La energía fluye de los heterótrofos a los autótrofos B.La energía, a menudo se libera de un ecosistema en forma de luz C.La organización de productores-consumidores y descomponedores muestra como la energía se concentra de manera mas alta en los descomponedores D.Para la mayoría de los ecosistemas la energía proviene de la luz

Answers

Answer:

D.Para la mayoría de los ecosistemas la energía proviene de la luz

Explanation:

Los ecosistemas requieren de un suministro constante de energía para poder sustentar la vida. A excepción de ecosistemas basados en fuentes hidrotermales, en general este aporte energético proviene del sol que suministra energía lumínica la cual es convertida por los organismos productores (por ej., plantas y algas) en compuestos orgánicos. Los productores representan la fuente de energía y alimento de consumidores primarios (por ejemplo, herbívoros), los cuales a su vez sirven de sustento para consumidores secundarios (por ej., carnívoros), estos suministran de alimento a los consumidores terciarios y así sucesivamente. Finalmente, los descomponedores son aquellos microorganismos que se alimentan de los restos orgánicos obtenidos a partir de productores y consumidores.

PLS HELP ME AND I WILL MARK BRAINIEST

Answers

Answer:

1.lease

2.cross contamination

3.cooked

4.security deposit

5.roomate

Answer:

A is lease B is cross contamination C is Cooked D is secured deposit E is roommate

Explanation:

Grass it is a _______.

Answers

Grass it is a plant? I dont know why there is a it is

in 1400, the most advanced naval fleet could be found in

A. China
B. Egypt
C. ireland
D. polynesia​

Answers

It would be A.) China.

Adaptation to terrestrial life involved major evolutionary changes. The change from gill breathing to lung breathing was accompanied by important changes in the Adaptation to terrestrial life involved major evolutionary changes. The change from gill breathing to lung breathing was accompanied by important changes in the cardiovascular system. association of blood and interstitial fluid. reproductive system. manufacture of blood cells.

Answers

Answer:

is this a story or the question?

Explanation:

What is the question?

What does it mean to die of "natural causes" or to die of "old age"?

Answers

Explanation:ya que el cuerpo se dessasta por  estar en funsionamieto pormucho tiempoc

Logically speaking, dying of “natural causes” means dying from diseases such as a stroke, heart disease, and other illnesses are the most common ones. Although, not all things are natural causes of death like car accidents.

On the other hand, dying of “old age” is quite similar. It just means someone who is old died from a disease. You can’t actually die of old age. Older people just have a higher chance of getting illnesses than younger people, and possibly dying from it.


I hope that made sense. If it didn’t, I’m sorry there’s no other way for me to explain it properly

Which is an example of a noncontact force?
elastic force
o normal force
O applied force
O electric force

Answers

Answer: I think it is electric force because they don't rely on a force to move or contract. Think of a rubber band. No matter how much you stretch it, it will always return to it's normal shape.

Hope it helps. Brainliest?

hello i need help with this biology question.. someone help !!

Answers

Answer:

A

Explanation:

The burmese python preys on mammals and sometimes that reduces prey population, making more species possibly extinct.

Answer is A I think

How do consumers get nitrogen?

Answers

When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use :D

Answer: Consumers eat plants or other animals to get their nitrogen.

Which is the best explaination of a recessive gene?
Your answer:
O A gene passed to offspring that has a mutation.
O A gene that influences traits every second generation.
O A gene that is hidden or not expressed.
O A gene passed to offspring that influences all traits.

Answers

Answer: A gene that is hidden or not expressed.

Which is not a factor that weather depends upon? Hours of daylight Air Temperature Air pressure Moisture

Answers

Answer:

Option A , Hours of daylight  does not affect the weather

Explanation:

The seven prime factors that affect the weather are

Temperature

Pressure

Moisture content

Speed and direction of air

Latitude

Ocean currents

Elevation and bodies of water.

Hence, option A , Hours of daylight  does not affect the weather

amino acids come from which type of organic molecule?

Answers

Answer:

QUESTION:

amino acids come from which type of organic molecule?

ANSWER:

Proteins

Proteins are polymers made up of nitrogen-containing monomers called amino acids. An amino acid is a molecule composed of an amino group and a carboxyl group, together with a variable side chain.

Explanation:

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Answer:

PROTIENS............... i think.

Explanation:

Que tedria de particular la retina de un animal que no pudiera diferenciar los colores cuya vision fuera exclusivamente en blanco y negro

Answers

Answer:

La falta de células cono en la retina

Explanation:

En vertebrados, la retina se encuentra formada por dos tipos básicos de células denominados células conos y células bastones. Las células cono son unas células fotosensibles las cuales forman una capa concentrada en el centro de la retina. Estas células (células cono) son responsables de la distinción entre diferentes colores del espectro de luz visible. Las células cono se clasifican en tres tipos de acuerdo a su sensibilidad para distinguir la luz azul, roja, y verde. Esta sensibilidad se debe a la presencia de diferentes tipos de proteínas opsinas, las cuales confieren la capacidad de absorber la luz en una longitud de onda particular: cianopsina (sensible a la luz azul), eritropsina (sensible a la luz roja) y cloropsina (sensible a la luz verde). Animales como los gatos y los perros son daltónicos, es decir, no pueden completamente diferenciar los colores, debido a la falta de una o más clases de células cono (y por lo tanto también de opsinas) en la retina.

How does population growth Affect mineral resource extraction

a. Higher population lower mineral extraction
b. Does not effect extractions
c. Higher population more mineral extration
d. Lower population more mineral extraction

Answers

Answer:

b.

Explanation:

does not effect extractions

What is the area of a plant cell

Answers

Answer: Plant cells can be larger than animal cells. The normal range for an animal cell varies from 10 to 30 micrometers while that for a plant cell stretches from 10 to 100 micrometers.

The large central vacuole is surrounded by its own membrane and contains water and dissolved substances. The cell wall is located outside the cell membrane.

PLEASE HELP YOU WILL GET MARKED THE BRAINIEST AND PLEASE TELL ME WHY U CHOSE THE ANSWER

- What is the geocentric model of the
universe?

a) The Theory of Evolution

b) Newton's Laws of Motion

c) The belief that Earth is at the center of our solar system

d) Superstition

Answers

Answer:

I believe C,

Explanation:

The geocentric model of the universe maintained that the Earth was at the center of everything in the solar system. In it, the Sun and planets orbited around our planet. Many odd and elaborate adaptations were required to make this model agree with observations. This problem increased, as our our observations got more accurate.

The geocentric model was superseded by the heliocentric model, in which the planets all orbited the Sun. The Heliocentric model was eventually able to show that the positions of the planets over time were much more convincingly, and simply portrayed by it, than by the former model.

Apologizes if I'm wrong/

Answer: It is c because the person who made it or thought of it said that the earth is at center of the cosmos or the universe.

Explanation:

List ten sources of water polution (LIST FORM, NOT LIKE AN ESSAY PLEASE!)

Answers

Answer:

Industrial waste (toxic chemicals)Sewage (contains harmful bacteria)Oil spills from boatsAgriculture (pesticides and animal waste)Radioactive waste from nuclear powerplantsDumping trash (trash such as plastics, glass, styrofoam, etc.)Acid rain (caused by the burning of fossil fuels)Mining activities (particles from mining)Soil erosion due to deforestationLeakage from landfills

how is the air outside the cell different after photosynthesis than it was before?

Answers

Photosynthesis turns water, sunshine, and co2 into oxygen.

Photosynthesis is a process by which plants take carbon dioxide, water, and sunlight from the atmosphere and release oxygen into the air. This results into decreasing the temperature of atmosphere and maintain concentration of gases.

What happens during Photosynthesis?

Plants consume carbon dioxide, which is a greenhouse gas through the process of photosynthesis. This process involves reduction of carbon dioxide in the atmosphere which has an indirect cooling effect on the atmosphere. Plants cool the atmosphere as they release water vapor when they get hot, by a process which is similar to sweating.

About 70% of the oxygen in the atmosphere which we breathe comes from the photosynthesis of plants and algae in the ocean. Atmospheric oxygen from photosynthesis also maintains the ozone layer, which protects living organisms from harmful ultraviolet (UV) radiations which comes from the Sun.

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PLEASE HELP!!!!!! Answer both of them please!
How do factors such as landforms affect weather patterns? Why do some air masses start as Maritime Tropical and later become Continental Tropical as they move across the United States?

Answers

Answer:

Hi,

For the first question they can make a huge change in temperature , humidity in certain areas or regions. The can also alter the wind and rate of evaporation .

What do scientists think collapsed that started the process of the formation of the planets?

A- A comet
B-a planetesimal
C- an interstellar cloud
D- an asteroid

Answers

Answer:

d asteriod

big bang theory was formed by two massive asteriod

My gardener removed all the flowers from my tulip plants. This will interfere with which system of the tulip plant?

vascular system
anchorage system
reproductive system
excretory system

Answers

Answer:

reproductive system

Explanation:

The flower of any plant is the reproductive unit of that plant. On other words, it is the part responsible for sexually propagating that plant. The flower of a plant contains the male and female reproductive organs i.e. pollen and ovary. Therefore, Flowers are integral parts of the reproductive system in plants.

According to this question, a gardener removes all the flowers from tulip (

What are 5 examples of biotic factors? No answer choices please help!!!

Answers

Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.

Answer:

deer, rabbits, fish, elephant, bird

Explanation:

Cystic Fibrosis is an autosomal recessive disorder. Neither parent has the disease Their first child (Joey) Has cystic fibrosis. What is the genotype of Joey? Use th letter A for the alleles for cystic fibrosis.​

Answers

I answered it in the other questions spot

please answer this within the hour

Answers

I can’t see the picture you posted :(((((
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