Which nitrogenous bases are considered purines?

Answers

Answer 1

adenine

cytosine

consider purines


Related Questions


What is gel electrophoresis? Explain how the length of base pairs flow through the gel.

Answers

Answer:

DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.

Explanation: :3 hope this helps

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A team of engineers is designing a new ship. The engineers first build several models of the ship. Explain in your own words why the models could help the engineers

Answers

Answer:

The model could help the engineers by giving they a prototype to build off of so they have an idea of what they ship looks like, and if the test it, they could troubleshoot and see the errors/successes of the model.

Explanation:

The engineers first build several models of the ship as the model could help the engineers by providing them a prototype to build of so that they have an idea of what or how the ship will looks like, and if they test it, they could troubleshoot and see the errors or successes of the model of the ship.

What are the fields in which science is applied?

Science has the factual based knowledge and it has about the Nature as well as the natural world that has created on the basis of observations and the experiments. It has the study of the experiments and observations and it has totally depend upon the scientific result that has obtained after the scientific experiments.

There are several fields in which science has been applied and these field are healthcare, telemarketing, environmental engineering, banking, government regulation, space, biochemistry, physics, chemistry, biochemistry and astronomy, engineering.

Therefore, The engineers first build several models of the ship as the model could help the engineers by providing them a prototype to build of so that they have an idea of what or how the ship will looks like, and if they test it, they could troubleshoot and see the errors or successes of the model of the ship.

Learn more about science here:

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When an atom loses an electron, it becomes a?

Answers

when it loses an atom it becomes an ion
It becomes a positive ion . Eg Na lost 1 electron to form Na+ . Vive verca , if an atom gains an electron it becomes negative

Which organelle provides support for the cell and may also help the cell move?
Cell Membrane
Cytoplasm
Cytoskeleton
Ribosome

Answers

Cytoskeleton because it maintains cell's shape, secures organelles in specific positions, allows cytoplasm and vesicles to move within the cell

A muscle cell requires more usable energy than a skin cell. Therefore, muscle cells contain many more
a ribosomes
b. nuclei
c. mitochondria
d. chloroplasts

Answers

Answer:

C

Explanation:

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:

Why does PE = mgh equal PE = Fw h ?

Answers

Answer:

Why is potential energy MGH?

Potential energy is energy an object has because of its position relative to some other object. ... For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Explanation:

Yes Yes Yes Yes Yes Yes

A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old

Answers

Answer:

The age of the rock is 5 million years

Explanation:

Fraction of radioactive substance remaining = 6.25% = 625/10000 = 1/16

Number of half-lives undergone by the substance to leave behind 1/16 of the original sample

1/16 = (1/2) * (1/2) * (1/2) *(1/2)

Therefore, the substance have decayed 4 times

One half=life = 1.25 million years

Four half-lives = 4 * 1.25 million years = 5 million years

Therefore, the age of the rock is 5 million years

Which statement best summarizes the importance of meiosis to reproduction?

Answers

Your answer would most likely be: C. It produces gametes that are needed for sexual reproduction.

I hope this helped you out a bit :)

guys please help
Question 11 Part A)

Make sure to sure me your work.

Answers

Answer:

95%

Explanation:

190 is 95% of 200.

The comparison of input versus output is also 95%

A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years?

Answers

Answer:

not 8.000

Explanation:

y

Please Mark Me BRAINLIEST!!!

Answer:

80 years

Explanation:

edg 2020

State two features of diffusion that do not apply to active transport

Answers

diffusion moves ions from high concentration to low using no metabolic energy and active transport uses metabolic energy in the form of atp to move ions from high concentration to low concentration


A form of simple cittusion is Osmosis. In which direction will water flow in the process of Osmosis?

A. Water will flow from low concentration to higher concentration

B. Water will flow with the solutes, against the concentration gradient

C. Water will flow towards the solutes (.e. toward the higher salt concentration)

D. Water will flow away from the solutes, with the concentration gradient

Answers

Answer: D

Explanation:

osmosis, water always moves from an area of higher water concentration to one of lower concentration.

please help i will mark brainliest

Answers

Answer:

The vaccine that protect humans from the h1n1 virus is called Panvax vaccine or swine Explanation:They are inactivated H1N1 virus vaccines used for immunization of individuals 6 months of age and older against influenza disease caused by H1N1 2009 virus.

C2H6O1 what is the answer?

Answers

Answer:

46.0684

Explanation:

Answer:

I'm sorry but I don't understand your question.

Why is it important for gametes to be haploid cells?

Answers

It is important that the chromosomes are haploid, because when the sperm and the egg fuse together the cell will have 46 chromosomes.

The reason why it is important for gametes to be haploid cells is because: when the sperm and the egg fuse together the living sex cells will have 46 chromosomes.

Gametes are also referred to as sex cells and they can be defined as the reproductive cells in a living organism.

Generally, the male reproductive cell is known as a sperm while the female reproductive cell is known as an egg.

Since gametes are reproductive cells or sex cells, they are typically made up of haploid set of chromosomes.

Basically, it is very important for gametes to be haploid cells so that when the sperm and the egg fuse together, the living sex cells will have a total of 46 chromosomes.

Read more: https://brainly.com/question/24261254

What is the purpose of Mitosis? *
A. To produce an egg and a sperm cell.
B. To produce a new organism (like bacteria).
C. To produce a new cell (NOT a new organism).
D. To differentiate.

Answers

Answer:

C.

Explanation: Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.

Hope this helps! Have a nice day!

Answer:

C. to produce a new cell

Explanation:

Mitosis consists in replicating the genetic material of a mother cell in order to make two identical daughter cells; this is a diploid process. In order to make an egg or sperm cell and eventually a new organism, the correct process would be meiosis, since it combines the DNA between two cells and it is an haploid process.


Lady Bird Johnson is responsible for which activity when her husband
was Governor of Texas

Answers

Answer:

she became the first presidents wife to advocate actively for legislation

What process best explains how a nerve cell and a muscle cell can both
develop from the same fertilized egg?
O A. differentiation
O B. natural selection
O C. selective breeding
O D. genetic engineering
Need ASAP!

Answers

Answer:

Im pretty sure its A.

Explanation:

=just took the teskst

Answer:  The correct answer is A. differentiation

Explanation:  Confirmed correct.

The speed at which waves approach the shore depends on the shoreline features and the depth of the sea floor. When a wave reaches the shore, it releases a burst of energy that generates a current which runs parallel to the shoreline. What is this current called?

Answers

Answer:

Longshore current.

Explanation:

A wave is a disturbance which travels through a material medium without any permanent displacement of the particles of the medium. During the propagation of a wave, energy is transmitted from one point to another since waves flow with energy. The higher its speed of propagation, the higher the energy of the wave.

The energy released by the wave at shore produces a current which is referred to as a longshore current.

Answer:

It would be Longshore Current

Explanation:

Hope it helps :)

How will help preserve kitchen
tools to avoid rusting?​

Answers

do not let it stay wet for long periods of time and dry if off after wash

can you pls help me ??​

Answers

Uhhh Photosynthesis?
photosynthesis pretty sure!

Perform online research to learn about an invasive species and its new environment. Discuss how the species was introduced to the environment, where it is invasive, what advantages the species has over native species in this environment, and what problems the species poses to the environment.

Answers

Answer:

(Answers may vary.)

Farmers brought nutria, a type of large rodents, from South America to North America in the 1990s. They wanted to raise the rodents for their fur. Some of these rodents escaped into the wild and became a major pest in the Gulf Coast and Chesapeake Bay regions. Grasses and shrubs in these regions are vital, because they provide food and shelter for many species. They also help in preventing soil erosion. The nutria are eating up all the grasses and shrubs, which affects the food cycles of these regions. The entire ecosystems are being disrupted.

Moreover, nutria pose a direct threat to humans. These rodents are an effective vector for carrying parasites that can cause disease in humans. They also damage property. The burrows created by nutria can damage dams and building foundations as well as cause erosion near streams and lakes.

Explanation:

the answer from pluto/edmentum

Answer:

The apple snail is a native species of Argentina, Bolivia, Brazil, Paraguay, and Uruguay. Southeast Asia legally imported this alien species to use it as a protein source. Later, this species was brought to places like Hawaii as a source of food.

Like most, if not all, invasive species, the apple snail outcompetes native species for resources. This is because it reproduces rapidly (laying hundreds of eggs every few weeks) and lacks predators. As a result, the snails spread rapidly to aquatic biomes and modify the natural balance of aquatic ecosystems.

Explanation: plato edmentum (answers may vary)

Milk sugar is a good source of;
A)galactose
B)glucose
C)fructose

Answers

The correct answer is glucose!

mutations are caused by the way genes from both parents combine, and they do get passed on. True or False

Answers

Answer:

That's True

Explanation: Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses. :)

What type of bond is being formed in this polymerization reaction to link two amino acids together?

Answers

answer : peptide bond or chemical bond between two compounds . (:

Why does having low levels of glucose or oxygen in his cells make it difficult for Guillermo to walk up steps? Which

Answers

The blood is the best to get tested as it is the only means glucose and other relevant materials reaches their destination


Explanation:

All human body cells contain 46 chromosomes. However, sperm cells in men and egg cells in women have only 23 chromosomes. This is due to meiosis. How does meiosis accomplish the reduction in chromosomal number?

Answers

Answer:

Two cell divisions after DNA replication

Explanation:

After the DNA is replicated, the cell undergoes two rounds of meiosis to produce 4 cells, each wIth 23 chromosomes. This is how the cell goes from a diploid to a haploid state.

Southern Florida has many tropical hardwood hammocks—forest habitats that are warm, wet, and populated with many broad-leaved evergreen trees. Why might a plant native to an ecosystem with a cooler climate do well if introduced to a tropical hardwood hammock? Group of answer choices The trees in the tropical hardwood hammock are better at competing for native resources than the introduced species are. The wet conditions in the tropical hardwood hammock disrupt the life cycle and limit reproduction of the introduced species. Freezing temperatures that normally limit the population in the cooler climate are lacking in the tropical hardwood hammock. Pollinators and seed carriers that normally increase the population in the cooler climate are lacking in the tropical hardwood hammock.

Answers

Answer:

Freezing temperatures that normally limit the population in the cooler climate are lacking in the tropical hardwood hammock.

Explanation:

The tropical hardwood hammocks are habitats that act as small ecosystems markedly different from the surrounding environment, and they may be seriously threatened by introduced plant species. In Florida, exotic plants have been introduced into the tropical hardwood hammock habitat, reaching to about 50% of the flora in some areas. The mature hammock of these habitats can generate a shade that maintains a temperature of several degrees cooler compared to their neighboring habitats, and thereby promoting invasion by exotic species.

The passage of genetic instructions from one generation to the next is known as what?

Answers

Answer:

heredity

Explanation:

Answer: heredity because it is

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How did the transcontinental railroad most affect the standard of living in the United States? A. It increased the Asian population on the west coast. B. It decreased the standard of living by shipping agricultural products east and manufactured goods west. C. It increased the standard of living by shipping agricultural products east and manufactured goods west. D. It allowed for faster transportation to visit other parts of the country. what is the meaning of relative as a noun? A seamstress was hired to make band uniforms for Hinsdale High school. The seamstress bought 148 yards of material. There were 16 students in the concert band and 20 students in the symphonic band. How much material did she have for each uniform?A. 36/9 yardsB. 37/9 yardsC. 35/9 yardsD. 38/9 yards Please Help Me!!!! ;) Use the zero product property to find the solutions to the equation 2x2 + x 1 = 2. c. One sixth of a number is 15. What is the number?Please explain step by step. larry gets a 5% wage rise. his new wage is 252 per week. what was larrys wage before his wage rise 2. Tina uSUally brings her children every Sunday afternoon at the children's park in their barangay. The park is 350m Iong and 200m wide complete with slides andswings for children to play. If is surounded by a pathway of unifom width for children who loves biking and jogging. Suppose the total area of the park and the pathway is 74,464 m2.a. How wide is the pathway of the park?b. If you were Tina, woulad you like your children fo go biking and jogging in that park? Which statement gives two characteristics of all liquids?They spread out to fill space and have atoms that vibrate in place.They have atoms that vibrate in place and have a definite shape.They will change shape to fit a container and have definite volume.They have definite volume and have atoms that move freely in all directions.How do the data support your claim above? Velocity which stone gains when falling from height of 80 m is approximately equal to *A. 0B. 1 m/sC. 8 m/sD. 40 m/sE. 300 m/s Which of the following is the least likely to remain homogeneous?. O A. All of theseO B. A supersaturated solutionO C. An unsaturated solutionO D. A saturated solution Largest layer of earth that makes up most of the earths mass. A:crust B:mantle. C:outer core. B:inner core Alfarsi Industries uses the net present value method to make investment decisions and requires a 15% annual return on all investments. The company is considering two different investments. Each require an initial investment of $15,600 and will produce cash flows as follows: End of Year Investment A B 1 $ 8,600 $ 0 2 8,600 0 3 8,600 25,800 The present value factors of $1 each year at 15% are: 1 0.8696 2 0.7561 3 0.6575 The present value of an annuity of $1 for 3 years at 15% is 2.2832 The net present value of Investment B is: What are the coordinates of the point (-3, 4) after a translation 5 unitsright and 6 units down? are irrational numbers intergers Which of the following was a result of the French and Indian war?AColonist from Georgia flocked to the Mississippi valley to settle.BThe Proclamation of 1763 was issued by King George III.Georgia lost half of its land to the French.DThe colonists agreed to pay extra taxes to help the king pay off ward debts. State the minimum monthly income and hourly wage per worker needed to cover monthly expenses for the family you used in part a. Then, explain how to calculate the hourly wage based on the monthly income and state the hourly wage. Assume that each full-time worker works four 40-hour work weeks per month, and each part-time worker works two 40-hour weeks per month.HOUSING $1,386 FOOD $804 CHILD CARE $1,709 Transportation $1,235HEALTH CARE $908OTHER NECESSITIES $884TAXES $1,483Monthly Total $8,409Annual Total $100,909 Part D How will you ask a group of students for their names im Spanish ? What are the solutions to the quadratic equation 3(x 4)2 = 75?x = 9 and x = 1x = 5 and x = 5x = 4 and x = 4x = 1 and x = 9 f(x)= -3/4x+6 Find the inverse I need help pretty bad please help!!