Purines and primidens are the two types of nitrogens.basis in nuclic acid,breifly explain both of them

Answers

Answer 1

Answer:

Pyrimidines

Uracil = 2,4-dioxy pyrimidine

Thymine = 2,4-dioxy-5-methyl pyrimidine

Cytosine = 2-oxy-4-amino pyrimidine

Orotic acid = 2,4-dioxy-6-carboxy pyrimidine

Polynucleotides

Nucleotides are joined together by 3'-5' phosphodiester bonds to form polynucleotides. Polymerization of ribonucleotides will produce an RNA while polymerization of deoxyribonucleotides leads to DNA.

https://library.med.utah.edu/NetBiochem/pupyr/pupy15.gif

Explanation:


Related Questions

What is the main way the flu virus spreads through a population?

A. Infected people
B. Plant toxins
C.Alcohol use
D.Mosquitoes​

Answers

Answer: The answer is A. Infected people

Explanation:

People with flu can spread it to others up to about 6 feet away. Most experts think that flu viruses spread mainly by droplets made when people with flu cough, sneeze or talk. These droplets can land in the mouths or noses of people who are nearby or possibly be inhaled into the lungs. Less often, a person might get flu by touching a surface or object that has flu virus on it and then touching their own mouth, nose, or possibly their eyes.

Source: www.CDC.gov

ASap
Which of the following integrates nervous and endocrine system?

A. adrenal gland.

B. posterior pituitary gland.

C. hypothalamus.

D. anterior pituitary gland.

Answers

It’s definitely C


Hope this helps:)

Choose the CORRECT statement about enzymes below.
Group of answer choices

Enzymes raise the activation energy needed in a chemical reaction

Enzymes slow down the rate of chemical reactions

Enzymes function best at specific pH and temperatures

Enzymes are carbohydrates and store short term energy

Answers

Answer:

Enzymes function best at specific pH and temperatures.

Explanation:

An enzyme can be defined as a biological catalyst that typically lowers the activation energy of a biological reaction. When the activation energy of a reaction is low, the rate of the reaction would be faster. Therefore, an enzyme speeds or catalyzes the rate of a reaction by lowering its activation energy.

Also, if the conditions are not optimal for an enzyme, it limits the ability of an enzyme to bind or be joined with its substrates.

Hence, the correct statement about enzymes is that enzymes function best at specific pH and temperatures. An increase in temperature increases or speeds up the rate of a reaction while low temperature limits or reduces the rate of a reaction. The optimal temperature for enzymes in the human body is around 37 degrees celsius.

What will happen to all organisms if there is no sunlight

Answers

Answer:

life will not possible on Earth I think so

Without the sun there would be no vegetation on earth, because every plant needs light to live and grow.

Which scientific area has the most influence in shaping modern classification methods?

Answers

Answer: The answer is " evolution". Evolution is a major force in shaping modern classification methods. Evolution is the adjustment in the qualities of an animal categories more than a few ages and depends on the procedure of common determination.

The scientific field which has had the greatest influence on shaping modern classification methods is Evolution.

What is Evolution?

Evolution is concerned with the sequence of changes which occur in organisms as they transform from their ancient forms to their modern forms.

It is the change in the genetic characteristics of a biological population over successive generations. These characteristics are manifestations of genes passed from parents to offspring during reproduction.

The three main types of Evolution are:

1. Divergent Evolution

2. Convergent Evolution

3. Parallel Evolution

Thus, the scientific field which has had the greatest influence on shaping modern classification methods is Evolution.

Learn more about Evolution, here:

https://brainly.com/question/13326304

#SPJ6

Please answer i am not having any motivation im very tired please answer giving brainliest look at photo and answer.

Answers

because the grand canyon was formed in the ocean and the ocean was filled with organisms

Can someone please help me

Answers

Answer:

letter D

Explanation:

LETTER D•Enzymes Are usually Carbohydrates

Which type of fossil can help us understand an organism’s activity during its lifetime?

Answers

Answer:

trace fossils

Explanation:

Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms.

Answer:

Trace fossils

Explanation:

"Trace fossil is the type of fossil that can help us understand an organism's activity during its lifetime. Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms."

Hope this helps!!

This is not my answer by the way!! I do not own this!!

Over time, a tree that once had a total mass of
300 g increased in mass to 3000 kg. This increase
in mass comes mostly from
(1) carbon dioxide that enters through the leaf
openings
(2) oxygen that enters through the leaf openings
(3) soil that all plants need to grow
(4) chloroplasts that enter the roots and move to
the leaves

WHAT IS ITTTT

Answers

Answer:

carbon dioxide that enters through the leaf

openings

Explanation:

What is one function of the organ system shown below in the picture?

Answers

The main function of the lungs is the process of gas exchange called respiration (or breathing). In respiration, oxygen from incoming air enters the blood, and carbon dioxide, a waste gas from the metabolism, leaves the blood. A reduced lung function means that the ability of lungs to exchange gases is reduced.

The circulatory and respiratory systems are involved in respiration. They provide oxygen to the body cells and remove carbon dioxyde. The correct option is A. To remove carbon dioxyde from the body.

Two systems work together when providing oxygen to the body cells and removing carbon dioxide: The circulatory and respiratory systems

• Respiratory system

This system is in charge of the gasses interchange. It takes oxygen from the air and releases carbon dioxide.

• Circulatory system

This system is in charge of driving oxygen to the organism's tissues and cells and taking away carbon dioxide from them.

These gases are in the oxygenated and deoxygenated blood, respectively.

The heart bombs blood through arteries, veins, and capillaries to the whole body.

The blood carries oxygen to different tissues.

This oxygen is absorbed in the lungs and proceeds from the air that we breathe. Its final destiny is all the cells in the organisms.

Types of circulation

• Lung circulation

1. Moves blood between the heart and the lungs.

2. Deoxygenated blood goes from the heart to the lungs

3. In the lungs, deoxygenated blood releases carbon dioxide and gets oxygenated again.

4. Carbon dioxide is released by exhalation.

5. Blood absorbs oxygen from small air sacs named alveoli.

6. Oxygenated blood returns to the heart.

Systemic circulation

1. Carries blood between the heart and the rest of the body.

2. Oxygenated blood leaves the heart and moves to all the cells in the body.

3. Deoxygenated blood returns from tissues to the heart.

According to thi framework, the function of the organ system shown in the picture is to remove carbon dioxyde from the body. Option A.

You can learn more about the respiratory system at

https://brainly.com/question/3305440

Drag the steps into the correct order to show how plants use energy from the sun. Start with the first step on top.


The sun shines on a plant.


The plant makes sugar and oxygen.


Chlorophyll traps energy from the sun.


Cells use sugar for energy.
PLEASE ANSWER QUICK! WILL GIVE 5 STARS AND A THANKS IF CORRECT. mAYBE BRAINLIEST AS WELL

Answers

Answer:

1. The sun shines on a plant 2.chlorophyll traps energy from the sun 3. the plant makes sugar and oxygen 4.cells use sugar for energy

Explanation:

this might be

Adjustments to timber management strategies meant to address long-term shortfalls will _______.
a.
result in immediate increases in available supplies
b.
lead to initial shortfalls in timber supplies
c.
initially decrease the cost of timber
d.
ultimately result in more expensive timber

Answers

Answer:B lead to initial shortfalls In Timber supplies

Explanation: I got it right

Answer:

B

Explanation:

Write and balance the cellular respiration equation of glucose (C6H12O6). Compare it with the photosynthesis reaction in terms of reactants, products, energy fow, and the signifcance of each.

Answers

Answer:

6O2 + C6H12O6 --> 6CO2 + 6H2O + ATP energy

and the photosynthesis reaction takes the opposite only it's input is sunlight energy

without either we are all dead

they are complimentary

Explanation:

Is there any difference in the time of sunrise during summer ans winter?​

Answers

Answer:

yes winter time sunrise exactly time but winter time you can't see sun

Why would these modifications be important i.e.
what unique feature does Arthrobotrys have?)​

Answers

Answer:

Forming adhesive trapping nets.

Explanation:

These modifications are important to captured its food and to survive in the environment. Unique feature does Arthrobotrys have is the presence of predatory behaviour. Due to this predatory behaviour of Arthrobotrys, they are able to capture the food such as nematodes and feed on them. The Arthrobotrys belongs to the fungi family Orbiliaceae and have 71 species. This fungi formed adhesive trapping nets in order to capture its food.

who is Safai karamcharis? what will they do​

Answers

Answer:The National Commission for Safai Karamcharis  was formed as a statutory body to look into matters concerning the Safai Karamcharis’ welfare  For the first time,  was constituted as a statutory body under the act in 1993.

____ detect stimuli and transform them into nerve impulses.
A. Motor neurons
B. Synpases
C. Sensory receptors
D. Axon terminals
E. Sensory neurons

Answers

The answer is Sensory Receptors

Hypersecretion of growth hormone after normal growth has ceased may cause

acromegaly

achondroplastic dwarfism

pituitary dwarfism

gigantism

Answers

Answer:

gigantism

Explanation:

The growth hormone is responsible for stimulating normal growth in humans or in other words, stimulating growth at a normal pace. To do this, the growth hormone must be released in optimal quantities, however, an hypersecretion i.e. excessive release of the hormone will cause a fast and uncontrollable growth in certain regions of their body or the whole.

This abnormal excessive growth caused by an excessive release of the growth hormone is called GIGANTISM. Gigantism occurs mostly in children at their growing phase.

A couple comes to a genetic councilor concerned about their chances of having a baby with Tay Sachs disease. The husband had a sibling die of the disease, which is inherited as a autosomal recessive trait. What are the chances that he is a carrier?

Answers

Answer:

ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

Explanation:

kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW22222222222222222222222222222222222222222222222222222222222222222QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW IF YOU HAVE MADE IT THIS FAR THEN PRESS ALT F4

Why are nonnative species a threat to biodiversity?

They often use up resources that other organisms need.
They are not able to successfully breed in the wild.
They release pollution into many environments.
They easily contract and spread diseases to other organisms.

Answers

Answer:

A

Explanation:

They often use up resources that other organisms need.

The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

Reason why nonnative species a threat to biodiversity:It leads to various kinds of diseases. It acted like predators or parasites. It acted like a competitor or rivalry. It should be hybridizing with local species.

Hence, The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

Learn more about biodiversity here: https://brainly.com/question/6503349


The reaction rate of a chemical reaction was measured with and without an enzyme. Which line is the
reaction with an enzyme?

Answers

Answer: yes they are used for particles and molcules

Explanation:

sb


HELPPP
A vertebrate depends on a variety of body systems, including the nervous, respiratory, digestive, circulatory,
skeletal, and muscular systems. Which statement BEST describes the relationships among the systems?
A )Each system works independently, but may sometimes complete tasks that generally are performed
by another system
B)Each system works independently and depends only minimally on other systems.
C )Each system typically works together with other systems, but sometimes functions independently.
D) Each system works closely with other systems, and could never function independently.

Answers

Answer:

D a system could never work independently they all are dependent on each other to peform its given function

The diagram below illustrates a natural Earth process through which the atmosphere
traps heat. Many scientists hypothesize that human activities are accelerating this
process, resulting in a global warming trend. What human activity is believed to have an
adverse effect on the natural process pictured here?

Answers

Answer: c. burning of fossil fuels.

Explanation:

Carbon Dioxide and other greenhouse gases like it are the reason some of the sun's heat is trapped in the atmosphere instead of leaving back into space. Any process which increase the amount of carbon dioxide in the atmosphere therefore can increase global warming.

One of the major human activities that involves releasing carbon dioxide is the burning of fossil fuels. We use fossil fuels for many things including producing electricity and driving. When this happens we release a lot of carbon dioxide into the atmosphere thereby making global warming worse.

What type of asexual reproduction is shown in the image below?

A)Binary Fission

B)Spores

C)Budding

D)Vegetative reproduction

Answers

It's budding or vegetative productioon it's one of them i think tell me if i am wrong

The type of asexual reproduction shown in the image below is Option C) Budding.

Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. For example, the small bulb-like projection coming out from the yeast cell is known as a bud. Since the reproduction is asexual, the newly created organism is a clone and excepting mutations is genetically identical to the parent organism. Organisms such as hydra use regenerative cells for reproduction in the process of budding.

In hydra, a bud develops as an outgrowth due to repeated cell division at one specific site. These buds develop into tiny individuals and, when fully mature, detach from the parent body and become new independent individuals.Internal budding or endodyogeny is a process of asexual reproduction, favored by parasites such as Toxoplasma gondii. It involves an unusual process in which two daughter cells are produced inside a mother cell, which is then consumed by the offspring before their separationBudding, in biology, a form of asexual reproduction in which a new individual develops from some generative anatomical point of the parent organism. In some species, buds may be produced from almost any point of the body, but in many cases budding is restricted to specialized areas. The initial protuberance of proliferating cytoplasm or cells, the bud, eventually develops into an organism duplicating the parent. The new individual may separate to exist independently, or the buds may remain attached, forming aggregates or colonies. Budding is characteristic of a few unicellular organisms (e.g., certain bacteria, yeasts, and protozoans). However, a number of metazoan animals (e.g., certain cnidarian species) regularly reproduce by budding.

Learn more about Budding

https://brainly.com/question/24873731

#SPJ2

Pls help me on this question this is on IXL

Answers

Answer:

Twice

Explanation:

Find 2 mistakes in this DNA strand.

Answers

The g doesn’t go with a it’s the second to last one but how’s biology class

Which amino acid will be carried to a ribosome by a transfer molecule contining the anticodon AAA?

Answers

TTT? I am not entirely sure, as you would have to know all of the amino acid codes. Sorry I can’t help more:(

Tatjana's vision for detail is declining. She once loved doing embroidery, but has switched to sculpting with clay, which is easier on her vision. This is an
example of selective________
with compensation

Optimization

Answers

Answer:

im confused what your asking if your asking but i think its optimization yes

Explanation:

How the Medical Assistant should evaluation a site for drug administration and why. 

Answers

Answer:

In general, documentation should include the date and time administered, medication name and dose, route of administration, site of administration (if applicable), the lot and expiration date (if applicable), and the patient's response to the medication.

(HELP ASAP ILL GIVE YOU BRAINLIEST)
As the manager of a mid-sized beauty salon, Drea often asks her employees for their input when it comes to making decisions that will impact the entire staff. Her employees appreciate feeling like part of the process thanks to her _____ management style.

A.
laissez-faire

B.
democratic

C.
political

D.
autocratic

Answers

Answer:

b

Explanation:

It makes the most sense

Answer:

B

Explanation:

I just took the test on plato

Other Questions
Pat volunteered to bake 80 biscuits for a family reunion breakfast. She plans to bake 8 biscuits in each pan. Which number sentence can be used to find p, the number of pans of biscuits that she will need to bake? Please help with these 4 pleaseeee!!! Tim has completed five math problems and 13 minutes if he continues at the same rate how long will it take him to finish 20 problems Plz answer Ill mark brainlist please help 11 points and will give brainelist what is the value of x ? round your answer to the nearest tenth . is Lapiz feminine or masculine Which is the theme of the passage? "I glared at Kristina reproachfully throughout our first-period Spanish class the next morning. She had responded to none of my calls or texts nor my outraged e-mail, and this morning she studiously avoided meeting my eyes, doubtlessly glad that the alphabetical seating arrangement meant that she was across the room from me. I also noticed that she had entered the class at the last possible moment and that Joel was also trying to catch her eye. I grinned a little at that."A. Planning ahead can benefit yourself and others.B. Helping others can be a pleasant experience.C. You should help others because you may need their help one day.D. It is important to help and spend time with elderly citizens. What is the lead coefficient in the product of ( -2x -3)(4x + 5) *-8-24-15Will pick brainliest HELP MEEEE!!!!!!!!!!!!!!!!!!!! I will give brainliest to whoever answers first. Complete the sentence below. Use correct rules of capitalization. ______ means belonging to an individual from birth; inherent. Who was the vice president of Andrew Jackson? What caused federalism to decline Can somebody provide some reasons for why Europe should accept refugees? I am doing a debate topic and I need some sources. Thank you for any who helps! Division of fractions Citizens of the United States are obligated to vote/ pay taxes/ do jury duty on money they earn and purchases they make. Also, young men and women/ men/ women must register their names with the Selective Service System once they turn 18. Which of the following is NOT considered a basic responsibility of citizens? A) voting in elections B) paying federal, state, and local taxes C) serving on juries D) serving in the militaryI give brainliest Write a 350-word compare and contrast essay. Between the Civil Rights Movement in the 1940s and 50s' and the Civil Rights Movement in the 1960s and 70s'. Simplify the inequality:-12.4x+8x > -0.4x-5.2-2.7 The Minoan civilization reached its greatest height between A. 1600 B.C.E through 1500 B.C.E B. 1200 through 146 B.C.EHelp RIGHT answers Only.