What chemical bond is responsible for the existence of the sugar-phosphate backbone of DNA

Answers

Answer 1

Answer:

Phosphodiester bonds

Explanation:

Answer 2

Answer:

The answer is phosphodiester bond.

Explanation:

The sugar phosphate backbone is an important stuctural component of DNA. It consists of 5-carbon deoxyribose sugars and phosphate groups. These sugars are linked together by a phosphodiester bond, between carbon 4 of their chain, and a CH2 group that is attached to a phosphate


Related Questions

Help me plz ..............

Answers

Answer: kelvin -tem second- time kilogram- mass meter -length

Explanation:

Match the term with the most appropriate definition.
Column A
1.
The basic units of life.
2.
The fundamental concept of biology that all living things are made of cells, cells are the basic structure and function in living things, and new cells come from existing cells.
3.
A large membrane-enclosed structure that contains DNA.
4.
The domain for organisms that have a nucleus to contain their DNA.
5.
The domain for organisms that have genetic material that is not contained in a nucleus.

Column B
a.Cell theory
b.Nucleus
c.Eukaryote
d.Prokaryote
e.Cell

Answers

Answer:

1 + e

2 + a

3 + b

4 + c

5 + d

Certain materials are needed by the mitochondria to make energy. Which of the following is most responsible for getting the
materials into the cell?
O A The materials need to Love through the cytoplasm to get to the mitochondria
B The cell membrane lets the materials into the cell so they can get to the mitochondria
OCThe cell wall lets the materials into the cell so they can get to the mitochondria
D. The materials need to move through the lysosome to get to the mitochondria

Answers

Answer:

C. The cell membrane lets the materials into the cell so they can get to the mitochondria

Explanation:

The cell membrane regulates the entrance and exit of certain molecules inside the cell. Some molecules can easily pass through the phospholipid bilayer via passive transport. Others use protein channels, and some require movement by active transport, or endocytosis.

What is anaerobic respiration?

Answers

Answer:Anaerobic respiration is respiration using electron acceptors other than molecular oxygen. Although oxygen is not the final electron acceptor, the process still uses a respiratory electron transport chain.

Explanation:hope this helps

Which is the correct order, from most simple to most complex?
A)Cell-Tissue-Organ System- Organism
B)Organ system-organ-tissue-cell tissue
C)Cell-Tissue-Organ-Organ System
D)Organism- Cell- Organ system- Tissue

Answers

Answer:

C) Cell-Tissue-Organ-Organ System

Explanation:

Identify the structures a virus can contain.

Answers

Answer:

The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.

PLEASE HELPPP I WILL GIVE BRAINLIEST What effect does starvation or suffocation have on the process of cellular respiration and how would this affect the organism as a whole. include these words: carbon dioxide, glucose, oxygen, water, ATP, reactant, product, food, fermentation, and anaerobic respiration. Please helppp

Answers

Answer:

Explanation:

This question seeks to test the knowledge of anaerobic respiration during the process of glycolysis. During intense exercise (or suffocation) the energy/ATP produced (for the short period of about 2 minutes) is as a result of the breakdown of glucose in the absence of oxygen (known as anaerobic glycolysis).

When an individual is fasting or experiencing starvation, the glycogen storage is quickly converted to glucose and then released into the body for cellular breakdown or respiration for the production of energy or ATP. Glycolysis leads to the formation of pyruvate; during suffocation/exercise, the pyruvate (serves as reactant) undergoes fermentation to either produce lactate in humans or ethanol and carbon dioxide in yeast cells (where lactate, ethanol and carbon dioxide serve as products).

Hence, starvation can be said to deplete glycogen storage while suffocation or anaerobic respiration (breathing in the absence of oxygen) causes the cellular breakdown of glucose (glycolysis) to be anaerobic. However, when the glycogen storage starts getting depleted, stored lipids starts getting converted to energy also in the presence of water in body.

It should be noted that the glucose (which is stored as glycogen) is synthesized/obtained from the food we eat.


How is static electricity created?

a. Two objects that are both positively charged repel each other and release
electric energy.


b. Two objects that are both negatively charged become attracted and create a
spark.

c.
Two highly conductive materials are placed within close proximity of one
another.
d. Friction between two objects causes a transfer of electrons from one object to
the other.
.

Answers

Answer:

d

Explanation:

So, when a person or any object has extra electrons, it creates a negative charge. These electrons thus get attracted to positive electrons (as opposite attracts) of another object or person and vice versa. The shock that we feel sometimes is the result of the quick movement of these electrons.

The rubbing of certain materials against one another can transfer negative charges, or electrons. For example, if you rub your shoe on the carpet, your body collects extra electrons.

Answer:

d. Friction between two objects causes a transfer of electrons from one object to  the other.

Explanation:

If electrons are transferred by rubbing two objects together, the result of the friction is that one object becomes positively charged by losing electrons, and the other object becomes negatively charged by gaining them. This is known as static electricity.

thermal energy transfer by conduction happens when heat moves from one object to another by

Answers

Answer:

Touching

Explanation:

Conduction is when you transfer energy by touching or direct

Answer:

touching

Explanation:

I give a brainliest who answers this question. What kind of chemical reaction does this energy diagram show?

look the Photo.


A) exothermic

B) endothermic

C) ionic

D) mass creating

Answers

Answer:

b) endothermic

Explanation:

Genetic information is encoded in a linear sequences of nucleotides,
which are structures that contain

A) a sugar group, a phosphate group, and a nitrogen base
B)an amine group, a functional R group, and a carboxyl group
C)short chains of CHO
D)long chains of CHO

Answers

Answer:

B)an amine group, a functional R group, and a carboxyl group

Explanation:

Each strand of s DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A diagram of a section of DNA is shown. DNDA Strand 3' _|___|___|___|___|___|___|___|___|___|___|___|___|_ 5' T G T A G C T G C G C G T Which DNA strand is complementary to the one shown above?

Answers

Answer:

The complementary DNA strand, according to the nucleotide sequence of the other strand is 3' - A C A T C G A C G C G C A - 5'

Explanation:

Each strand of DNA is made up of specific sequences of the four nucleotides present in this molecule, adenine, thymine, cytosine and guanine.

In double-stranded DNA, one strand complements the other —according to the complementarity of nitrogenous bases— where a purine, adenine and guanine, are joined with a pyrimidine, thymine and cytosine, respectively:

Adenine is complemented with Thymine. Guanine is complemented with Cytosine.

According to this, the complementarity of the strands is:

    5' - T G T A G C T G C G C G T - 3'

    3' - A C A T C G A C G C G C A - 5'

The DNA strands remain linked by hydrogen bonds between their nitrogenous bases, until such time as they must be separated for transcription.

A diagram that shows the connections of many food chains is called a ...

Answers

Hey :)

I think it’s a ‘food web’ but honestly I’m not sure

I hope this helps anyways :)


9. Which will most likely result if there is increased upwelling in a coastal
area?

A.Less living organisms in that area

b. Water will be warmer

C. Water will be colder

D.more aquatic life

Answers

Answer:

D more aquatic life

Explanation:

A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?

Answers

Answer:

18 m/s^2 A newton is defined as kg*m/s^2 and you want to accelerate a mass in kg, getting a result of m/s^2. So what you need to do is cancel out the kg unit in the newtons. You can do that by dividing the newtons by kg. So let's do the math. 10.8 kg*m/s^2 / 0.60 kg = 18 m/s^2 So the ball has an acceleration of 18 m/s^2. Remember, look at the units you have and the units you desire. By doing so, the math operations become obvious.

Explanation:

Answer:

18 m/s^2

Explanation:

18 m/s^2 A newton is defined as kg*m/s^2 and you want to accelerate a mass in kg, getting a result of m/s^2. So what you need to do is cancel out the kg unit in the newtons. You can do that by dividing the newtons by kg. So let's do the math. 10.8 kg*m/s^2 / 0.60 kg = 18 m/s^2 So the ball has an acceleration of 18 m/s^2. Remember, look at the units you have and the units you desire. By doing so, the math operations become obvious.

What is Creatine Kinase? What is it used for in our muscle cells?

Answers

Answer:

This test is used to find damage to muscles in your body, including your heart muscle. Creatine kinase (CK) is an enzyme found in your muscles. Enzymes are proteins that help your body's cells do their jobs. The level of the CK enzymes rises when you have damage to muscle cells in your body

Explanation:

how can limiting factors (density dependent and density independent) affect a population size?

Answers

Density-dependent limiting factors cause a population's per capita growth rate to change—typically, to drop—with increasing population density

The movement of water through a plant is caused by

Answers

Answer:

The bulk of water absorbed and transported through plants is moved by negative pressure generated by the evaporation of water from the leaves (i.e., transpiration) — this process is commonly referred to as the Cohesion-Tension (C-T) mechanism.

Explanation:

2. The allele for webbed hands (W) is dominant to normal hands (w). Complete a Punnett square
to predict the offspring should a heterozygous male cross with a heterozygous female.
a) Determine the genotype of each parent:
(parent one)
(parent two)
b) Complete the punnett square
c) Complete the ratios of the genetic cross:
d) What is the percentage that the offspring will have webbed hands?
e) What is the percentage that the offspring will have normal hands?

Answers

a. both parent would be Ww
b. see picture (for the top left it would be Ww not wW)
c. 2 Ww, 1 WW, 3 ww (i think i’m not sure how to do ratio)
d. 75%?
e. 25%

When a heterozygous male (Ww) crosses with a heterozygous female (Ww), the resulting offsprings possess genotypes WW, Ww, Ww, and ww.

What do you mean by Genotype?

Genotypes may be defined as the ultimate combinations of the alleles of those genes which are selected for studies.

The genotypes of both parents are heterozygous i.e. Ww. The ratio of the complete genetic cross is 3:1.The percentage that the offspring will have webbed hands is 75%. (WW, Ww, Ww)The percentage that the offspring will have normal hands is 25% (ww).

The Punnett square is attached below:

Therefore, it is well described above.

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Fasttttttttttttttttttttttttttttttt 15 points

Answers

Answer:

the right answer is C.

Explanation:

cos there is an obstruction which made d voice 2 bounce back plz give me brainiest

Which nitrogenous bases are considered purines?

Answers

adenine

cytosine

consider purines

You need to find out why the GBR water is inhibiting (stopping) photosynthesis in the algae. The three major parts of photosynthesis are PSI, PSII and the Calvin cycle. The database has provided 3 things that could be inhibiting photosynthesis: high sea temperatures, paraquat, and diuron.

Answers

Answer:

Explanation:

The question is not complete below is the remaining part of the question

Justify your choice by writing a hypothesis to explain how it has stopped the algae from making ATP, NADPH and sugars. You will be able to revise your hypothesis as you do more experiments

Explanation:

The hypothesis will be

High sea temperature inhibit Algae growth

Herbicides reduces algae photosynthesis rate

Algae respond to temperature differently some thrive at a low temperature, some at a moderate temperature but when the temperature is very high the rate of photosynthesis will reduce because they can not undergo the normal body physiological function as a result of harsh environment. In green plant at a very high temperature stomata closes to regulate water loss this prevent Carbon dioxide from coming in and photosynthesis rate reduces

Paraquat and Diuron are herbicide that prevent the growth of plants, when they are sprayed Algae is affected they die from immediate action of this chemical and their colour changes since chloroplast the green pigment is where light hit for photosynthesis to occur when the color changes the active site is affected photosynthesis can no longer occur.

Answer:

Diuron

Explanation:

Increasing the temperature only decreases the sugar, not the ATP and NADPH. I predict that Diuron will be inhibiting photosynthesis because photosynthesis as a whole should not work if Photosystem II is interfered with. Also, because Paraquat only lowers NADPH and sugar and not ATP, Diuron is the only choice left.


WeWhat are the symbols for the SIX
elements that make up 99% of the atoms
in the human body?

Answers

Answer:

The 6 Main Elements are Hydrogen, oxygen, carbon, Nitrogen, calcium & phosphorus

Explanation:

99% of the atoms in the human body come from 6 elements: Hydrogen at about 63%, oxygen (around 25%), carbon (nearly 11%), nitrogen (nearly 0.7%), calcium (0.25%), phosphorus (0.15%) and Calcium which is essential for our bones, & contains 99% of the calcium in the human body

I agree with the person above

(1: DOK1) Which of the following monomer is used to store energy?
a) nucleotides
b) triglycerides
c) monosacchrides
d) amino acids

Answers

I believe it would be nucleotides

Monosaccharides are used to store energy. monosaccharides are the monomers of carbohydrates.

What are Monosaccharides?

Monosaccharides are the monomers of carbohydrates. It is the energy storage in the body. Carbohydrates provide energy in the form of glucose.

A monosaccharide is a type of simple sugar that serves as the foundation for more complex sugars like polysaccharides and oligosaccharides. Fructose, glucose, and ribose are some examples.

Monosaccharide is an etymology term that means "one saccharide." Saccharides are the basic building blocks of carbohydrates.

Therefore, Monosaccharides are used to store energy. monosaccharides are the monomers of carbohydrates.

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Question 2 of 7
What is a product in photosynthess
Carbon diokide
glucose

Answers

Answer:

glucose

Explanation:

The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas.

Using the photosynthesis equation, predict how the rate of photosynthesis might change with variation in the following parameters (assuming that the plants is not receiving the maximum amount it can use):
a. The amount of light hitting a leaf
b. The availability of water
c. The amount of carbon dioxide in the atmosphere
d. The air temperature when water is limiting factor​

Answers

Answer:

the answer is below

Explanation:

a) A plant process that changes sunlight into chemical energy. If there is less light the plant wont be able to function properly

b) Without enough water in the cells, the plants droop, so water helps a plant to stand. Water gives plants moisture to keep them alive.

c) If there is not enough CO2 the plant wont be able to photosynthesise as fastly as it usually does.

d) If the temperature is high and there is lack of water the plant is most likely to die. This is because it will be dehydrated.

1.Which of the following is a biotic factor within the ecosystem *
• The climate in the area
• The herbivore that feed on producers
• Amount of oxygen
• Amount of sunlight
2. Which of the following contains only biotic factors? *
• Temperature, pH and rainfall
• Algae, shrimp and humidity
• Frog, climate and insect
• Ant, grass and snail
3. In all symbiotic relationships, at least one organism benefits *
• True or False?
4. Lions kill and eat animals such as zebras and wildebeasts. Jackals then scavenge on the leftover remains. The jackals benefit from the lions without harming or benefiting them in return. What type of relationship is this? *
• Mutualistic
• Parasitic
• Commensal
• Competitive
5.Clownfish make their homes among the stinging tentacles of sea anemones. The clownfish gain protection from predators while attracting prey for the anemones to eat. Why is this an example of a mutualistic relationship? *
• The clownfish benefit but the anemones are not affected
• The clownfish and anemones both benefit
• The anemones benefit but the clownfish is not affected
• The anemones are harmed by clownfish

Answers

1. The herbivore that feed on producers

Which of the following describes a second class lever
1. The fulcrum is located between the effort force and the load.
2. The effort force is located between the fulcrum and the load force.
3. The load force is located between the effort force and the fulcrum.

Answers

Answer:

I think the answer might be number 2

In the second class lever, the load is between the effort force and the fulcrum. The correct option is 3.

What is a fulcrum?

The term can refer to the juncture or assistance on which a lever rotates, as well as the focal point of a critical activity or situation.

The term "fulcrum point" in zoology refers to an anatomical structure that serves as point of support.

The load in second-class levers lies among both the effort and the fulcrum. A wheelbarrow is a prominent example, where the effort moves a great distances to lift a substantial load, with the axle and wheel acting as the fulcrum.

In a second-class lever, the effort is distributed over a large area in order to raise the load a short distance.

Thus, the correct option is 3.

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Phenylalanine is required for the production of many bodily proteins, but none of your cells are capable of synthesizing this essential amino acid. What type of metabolic pathway must be responsible for providing phenylalanine to your cells? How would your diet effect the mount of Phenylalanine that is available?

Answers

Answer and explanation:

Phenylalanine is an amino acid that is very important for our bodies to function correctly but it isn't synthesized in our cells, so the only way to incorporate it is by having it in our diets, this is why phenylalanine is an essential amino acid.

Phenylalanine can be found in milk, eggs, chicken, and liver, among other foods known to be good protein sources. Given the fact that phenylalanine is an essential amino acid, the amount we ingest of it in our diet will directly impact on the availability of this amino acid in our body.

Phenylalanine is an amino acid and, as such, it will enter the metabolic pathway of protein catabolism, where it will be degraded to be fully usable for the body. Phenylalanine will be metabolized into acetoacetic acid and fumaric acid, and is the precursor of catecholamines such as epinephrine and norepinephrine, while also being part of the structure of several neuropeptides.

Which of these best describes the basic unit of structure and organization of all living things?
A.
cell
B.
mitochondrion
C.
tissue
D.
DNA

Answers

Cell is the term that best captures the fundamental level of organization and structure found in all living things. the tiniest component of all living things, including cells and other body tissues, and the smallest unit capable of independent existence.

How do cells work, and what are they made of?

They support the body's structure, consume nutrients from meals, transform those into energy, and perform certain tasks.

Who coined the term cell?

In 1665, the cell was found by Robert Hooke. With the aid of a compound microscope, Robert Hooke examined a piece of wine cork and discovered tiny structures that looked like little rooms. His designation of these "rooms" as "cells" follows.

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