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

describe what is happening at each phase of meiosis​

Answers

The process of meiosis takes place in two phases. Meiosis I; Meiosis II; Phases of Meiosis 1 and Meiosis 2. During meiosis I, a cell is divided into two, and in meiosis II, further division takes place, resulting in a total of four haploid cells. Before the start of the process, the parent cell goes through a stage of preparation called the interphase.

answer was found here -https://ibiologia.com/phases-of-meiosis/#:~:text=The%20process%20of%20meiosis%20takes%20place%20in%20two,through%20a%20stage%20of%20preparation%20called%20the%20interphase.

Hope this helps you :3

What is the SOURCE of new traits in a species? Question 7 options: A Mutations
B Natural selection C Adaption D Evolution

Answers

Answer:

Your answer is A) Mutations.

Answer:

A) Mutations

Explanation:

Verified correct with test results.

Scientists believe lichen is the common ancestor for all plants.​

Answers

False

Explanation:
Scientists believe it’s Ancient green algae that is the common ancestor for all plants
Hope this helps:)

Which property of matter is conserved in chemical reactions and shown by balanced equations?
mass
ООО
volume
density
shape

Answers

Answer:

The correct answer is - Mass.

Explanation:

A chemical equation represents the change in the complete composition during the chemical reaction. The reactants and the mass of the products remain constant in the balanced equation which means there is no loss of mass take place in a chemical reaction.

Chemical reactions follow the law of conservation of mass which means like energy mass can not be destroyed or created and represent by the balanced chemical equation.  

Answer:

a mass

Explanation:

How does a loess affect the environment around it?

Answers

Answer:

Because loess is deposited from the atmosphere it provides an important geologic archive of past atmospheric circulation that can be used to test atmospheric circulation models

Explanation:

Answer:

Loess often collects in river headwaters, and subsequently gets carried to riverbeds. The buildup can be so dense, that it diverts the water over the adjacent flood plain. This may result in the flooding of rivers.

Explanation:

Which of the following is NOT one of the four main layers of Earth's atmosphere?
A. Troposphere
B. Thermosphere
C. Mesosphere
D. Exosphere

Answers

A. Troposphere I believe


sorry if it’s wrong <33

describe all of the possible phenotypes of the father's parents. Show the punnet square to support your awnser

Answers

Answer:

We don't know.

Explanation:

We need more to answer this.

This pedigree chart tracks the inheritance of a recessive trait that is not sex-linked. Based on the information in the chart, which of the following statements is true about individuals 3 and 4?

At least one is hete rozygous for the trait.
They are both hom ozygous dominant for the trait.
They are both hete rozygous for the trait.
At least one is hom ozygous for the trait.

Answers

Answer:

C. They are both heterozygous for the trait.

Explanation:

It is not possible for both parents to be hom ozygous dominant, as that would only produce hom ozygous dominant children, and from the chart they have one child that is recessive.

It is not possible for only one parent to be heter ozygous, as again, that would only produce dominant children.

Lastly, it is not possible for only one to be hom ozygous, because that again would only result in dominant children.

Pairing two heter ozygous parents would result in a 25% chance of a recessive child.

I would appreciate brainliest, if not that's ok!

Margo is interested is pursuing a degree in agriculture. To decide on a career field, what should she consider first?

Answers

Answer: innovations in farming and necessary education history of agriculture and benefits

Explanation:

Since Margo wants to pursue a career in agriculture, it is best that she consider the innovations in farming and necessary education history of agriculture and benefits.

This will be vital for her to know the rudiments regarding agriculture, what it entails, it's benefits and it's impact on the economy as a whole.

Which of the following is not an organ?
Skin
Lungs
Mesophyll
רוסו
Liver
Eyes​

Answers

D) Circulatory system is not an organ. It refers to a system composed of organs (such as the heart, blood vessels, and blood) that work together to transport substances throughout the body.  So, option D is the right choice.

The circulatory system is a complex network of blood vessels, the heart, and blood. It is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body.

The heart (option A) is an organ that pumps blood and helps circulate it throughout the body.The brain (option B) is an organ that controls various bodily functions, processes information, and regulates the nervous system.The stomach (option C) is an organ involved in the digestion of food.The circulatory system (option D) is not an organ itself but rather a system composed of organs, including the heart and blood vessels, that work together to transport substances.The kidneys (option E) are organs responsible for filtering waste products from the blood and producing urine.

Therefore, among the given options, D) Circulatory system is the correct answer as it does not represent an individual organ but a system comprising multiple organs.

For more such question on Circulatory system
https://brainly.com/question/3597250

#SPJ8

The complete question may be like:

Which of the following is not an organ?

A) Heart

B) Brain

C) Stomach

D) Circulatory system

E) Kidneys

Compare and contrast the three types of RNA's discussed during protein synthesis

Answers

Answer: tRNA- bring amino acids during translation

rRNa-make up the enzymatic components of ribosomes

mRNA- (messenger RNA) is read by the ribsome during protein synthesis

Explanation:

They are similar in the ways that they are all made from RNA (lol)

In this project, you will use reference materials and Internet sites to do research on a specific type of
genetic modification: genetically modified foods. Suggested references are listed at the end of this
document to help you with this project.
Using your research, you should be able to answer these questions:
1. What are genetically modified foods?
2. What crops are typically genetically modified?
3. Why are crops genetically modified?
4. How are crops genetically modified?
5. How do genetically modified foods affect society and the environment?
You will then share what you have learned by preparing a multimedia presentation. Your multimedia
presentation should include a title slide, a number of content slides that include specific information about
genetically modified foods, and a slide that lists the sources you used in your research.

Answers

Answer:

Genetically modified foods, also known as genetically engineered foods, or bioengineered foods are foods produced from organisms that have had changes introduced into their DNA using the methods of genetic engineering.

The most common GMO crops include soybean, maize, cotton, canola, and alfalfa. The following GMO crops were also planted in different countries in 2018: papaya, eggplant, potato, apple, safflower, pineapple, and sugarcane.

For centuries, farmers have bred crops for certain desirable traits. Genetically Modified (GM) crops offer improved yields, enhanced nutritional value, longer shelf life, and resistance to drought, frost, or insect pests.

Genetic modification of plants involves adding a specific stretch of DNA into the plant's genome, giving it new or different characteristics. ... The gene of interest is transferred into the bacterium and the bacterial cells then transfer the new DNA to the genome of the plant cells

GMOs have helped farmers reduce their environmental footprint by allowing them to use fewer inputs and enabling a shift to reduced tillage. These practices have led to less time spent on a tractor, less fuel used and fewer emissions.

Answer:

Genetically modified foods, also known as genetically engineered foods, or bioengineered foods are foods produced from organisms that have had changes introduced into their DNA using the methods of genetic engineering.

Explanation:

The granite boulders in Rocky Mountain National Park are a favored place among talented climbers who specialize in the art of bouldering, or climbing harder (but shorter) routes without tying into a rope. Climbers have taken to (illegally) stashing foam crash pads underneath the boulders but marmots and other rodents chew up the pads and the litter is spread by the wind. Why would the park be overused in this manner

Answers

Answer:

Follows are the solution to this question:

Explanation:

The National Park for Rocky Mountain is among the nation's best popular national parks. Rich fauna wandering the valley and also some derisive recreational sports on the planet including its majestic peaks throughout every way is no surprise that each year upwards of 3.5 million people flocks to this park. Throughout this issue, the park would be overplayed as described, since the marginal private expense of using the parks is less than those of using the park at a marginal cost.

Pakicetus
50 million years ago
Aetiocetus
25 million years ago
Gray Whale
Today
Which additional claim can be BEST supported by the evidence from the skulls in the whale fossil record?
O A. The fossil record shows differences in the skulls of the mammals, which shows that they are from three separate species that all
lived at the same time.
B. The fossil record shows similarities in the skulls of the mammals, which shows that they must have had similar habitats and
environments
C. The fossil record shows that some mammals evolved so that their nostrils are further at the top of their skull for better breathing
while in the water.
D. The fossil record does not give enough evidence about the mammals to determine if there is a relationship between the three
skulls.
BI
0
3:14 PM
2R3/2021

Answers

Answer: The basic theme of whale evolution is the development of large animals from much smaller ancestors, and nowhere is this more evident than in the case of multi-ton sperm and gray whales, whose ultimate forebears were small, dog-sized prehistoric mammals that prowled the riverbeds of central Asia 50 million years ago. Perhaps more intriguingly, whales are also a case study in the gradual evolution of mammals from fully terrestrial to fully marine lifestyles, with corresponding adaptations (elongated bodies, webbed feet, blowholes, etc.) at various key intervals along the way.

Explanation:Pick B is the best choice

Are horseshoe carbs the oldest knob species of crabs

Answers

Answer:

yes they are

Explanation:

Answer: Yes

Explanation:

grade 5 science MYA answers 1-10 =

Mr. Powell is demonstrating the water cycle. He shapes mountains out of clay on one end of a glass aquarium to represent land. He then pours some water into the aquarium and places a glass lid on it. Next, he turns on a lamp above the aquarium and, finally, he places a container filled with ice on the glass lid. In this model, which choice correctly identifies evidence of condensation?


a - water droplets falling on the clay

b - less water in the bottom of the aquarium

c - water running from the clay into the water

d - water forming on the lid under the container

PLEASE HELP!!!!!! this is due in 5 mins and this is my only question left o_o

Answers

Answer: d - water forming on the lid under the container

Explanation:

Condensation is the process that describes the change of state of water from gas to liquid. It happens in the water cycle when water vapor gets to the atmosphere and due to the lower temperatures turns into liquid water that then forms clouds.

In the demonstration, the container is meant to be the clouds so when water forms under the container, that is condensation happening because the water vapor has not turned back to liquid after leaving the aquarium water as water vapor.

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

Who would win in a fight, a guy with a harpoon or a shark

Answers

Answer:

A guy with a harpoon

Explanation:

most likely the guy with a harpoon would win because they would be above the shark instead of at eyelevel. if the person were to be above the shark they would be able to see where to throw it better and the shark wouldn't be able to see the person as well.

ATP synthase is powered or driven by ______ flowing through it, in order to make ATP molecules.
A. NADH
B. protons or hydrogen ions
C. protons
D. hydrogen ions
E. hydrogen or NADH

Answers

Answer:

B

Explanation:

what is a ecosystem? write 2 to 5 sentences to explain it​

Answers


Ecosystem is that it is a community or group of living organisms that live in and interact with each other in a specific environment.

For instance, tropical forests are ecosystems made up of living beings such as trees, plants, animals, insects and micro-organisms that are in constant interaction between themselves and that are affected by other physical (sun, temperature) or chemical (oxygen or nutrients) components.


An ecosystem consists of a community of organisms together with their physical environment.
Ecosystems can be of different sizes and can be marine, aquatic, or terrestrial. Broad categories of terrestrial ecosystems are called biomes.
In ecosystems, both matter and energy are conserved. Energy flows through the system—usually from light to heat—while matter is recycled.
Ecosystems with higher biodiversity tend to be more stable with greater resistance and resilience in the face of disturbances, or disruptive events.

Which of the following best describes why the Earth orbits the Sun?

Answers

Where are the following

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:)

Please help me ASAP anyone

Answers

Answer:

this is the answer like the commet.

b

Answer:

it's b...............

Plz help me I am timed plz

The hardness of a mineral, the color, and how shiny it is describes a mineral's_________.

OA) texture

OB) properties

ОС size

OD chemical state
P.s i can’t add more points sorry

Answers

Answer:

The answer is Properties

What does the Smooth E.R. Do

Answers

Answer:

it's important function is to manufacturer Lipids

Answer:

The smooth E.R mainly makes the lpids that make up the cell membrane.

Explanation:

Help last question I think it’s molecules Help ASAP

Answers

Answer:

atoms po or molecules

Explanation:

sana po makatulong

a special structure used for cells movement about plants ang animals​

Answers

it’s the cytoskeleton

PLEASE HELP IT IS FOR PSYCHOLOGY!!

How does the brain determine who we are? To what extent should individuals be held accountable for their actions when the individual is known to suffer from neurological disorder?

Answers

Answer:

i think it  bc it cennected to ower bodys and know ower body langues  so i thin this how ower brain  know who we are

Explanation:

and instrument to measure heart beat​

Answers

Answer:

stethoscope is the instrument used to measure heart beat

Answer: Pulse Oximeter (The thing that they put on your finger when u go to hospital)

Can someone do this quick?

Answers

Answer: A.

Explanation:

Palisade mesophyll cells contain the most amount of chloroplasts with an average of 30–70 chloroplasts per cell so they will be number 2 in the graph.

Spongy mesophyll cells contain less chloroplasts than their palisade counterparts to enable them have a larger surface area for gas diffusion.

The guard cells have the least amount of chloroplasts on average and so will be number 1. on the graph.

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