If a DNA molecule had a total of 1000 nucleotides and 200 of these are adenines, what would be the total number of pyrimidines in this molecule?

Answers

Answer 1

If a DNA molecule had a total of 1000 nucleotides and 200 of these are adenines, then the total number of pyrimidines is 500. Adenines (A) are purine bases.

DNA is a double helix molecule composed of two long chains of nucleotides that are held together by hydrogen bonds.

In DNA, there are four types of nucleotides, each containing one different nitrogenous base: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T).

Adenine (A) and guanine (G) are purines, whereas cytosine (C), thymine (T), are pyrimidines.

According to the base pair rules, Adenine always pairs with Thymine, whereas Guanine pairs with Cytosine.

In this case, the number of A + T is equal to 400 (200 + 200) and the number of G + C is 600 (300 + 300), thereby the number of pyrimidines or C + T is equal to 500 (200 + 300).

Learn more in:

https://brainly.com/question/13834173


Related Questions

Norma claims she pushed the button "for us" (to benefit her husband and herself )? Do you believe her or not ? Explain

USE R.A.C.E STRATEGY AND WRITE AT LEAST ONE PARAGRAPH ( or at least 6 sentences) NO BOTS OR LINKS

Answers

I just don’t get it h

A window display attracts passersby
True
False

Answers

Answer:

it is dosnt attracts passerby False

Traditional Chinese culture is the general term for national civilization, customs and spirit. The definition of "culture" is often "the benevolent see benevolence, and the wise see wisdom". Simply put, traditional Chinese culture is based on the three schools of Confucianism, Buddhism and Taoism. The three are interdependent, infiltrate and influence each other, and build the whole of Chinese traditional culture. The ideas of these three traditional cultures are collectively called the "Three Religions" in China.

Answers

Answer:

Chinese traditional culture

Explanation:

Chinese traditional culture

Protecting shoreline communities from tsunamis is a struggle, especially in less developed regions of the world. Explain why your experiment supports this statement.

Answers

Protecting shoreline communities from tsunamis is a struggle, especially in less developed regions of the world because tsunamis are unpredictable. These phenomena have a higher effect on low-income shoreline families.

Tsunamis can be defined as giant ocean waves due to earthquakes and/or volcanic activity that occur under the sea.

Tsunamis may devastate entire shoreline communities because they are unpredictable and they speed along like a jet plane.

Tsunamis mainly affect shoreline low-income families in developing countries because the houses in which these people live in developing countries are rudimentary.

Learn more in:

https://brainly.com/question/1126317

what is a protein that recognizes and responds to a signal

Answers

The answer to your question is receptors.

Answer:
Receptors
Explanation: any molecule present outside the cell that can elicit a response inside the cell when the molecule binds to a receptor.

Which is a heterotroph?
A. Grass
B. Lion
C. Dandelion
D. Oak Tree​

Answers

Answer:

Lion

Explanation:

Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs. Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms.

Mountain lions, or cougars, are carnivorous heterotrophs and feed on a wide range of prey, such as insects, small mammals, reptiles and birds, but their most common prey is deer.

Grass, like the majority of green plants, is autotrophic. Thus, Grass produces its food through the photosynthesis process, which uses solar energy, water, and carbon dioxide. Thus, it is not a Heterotroph.

Dandelion is a typical photosynthetic autotroph. (Dandelion) An autotroph is an organism that can produce its own glucose and use it as energy. The Dandelion is a plant that can preform photosyntesis by collecting sunlight, water, and nutrients and create it’s own glucose. This makes the Dandelion an autotroph.

Trees, like all other plants, are autotrophic, meaning that they can produce food through the process of photosynthesis. Oak trees are considered autotrophs because they produce their own food.

A local watershed carries runoff from farms, suburban lawns, and wastewater treatment plants into local rivers, and eventually into a local bay. How could this affect the health of the bay?
A. It could make water hypoxic for organisms.
B. There will be an increase of aquatic plants and fish.
C. It could increase dissolved oxygen for fish.
D. There will be decreased nutrients in the water.

Answers

Answer:

answer should be "making water hypoxic for organisms". reason is because the runoff from these treatment plants are filled with nutrients, which will cause eutrophication. eutrophication is excessive algae sprouts which create more DO but then later becomes all used up when they decompose, making it so other organisms have no oxygen.

The runoff water from farms, suburban lawns, and wastewater treatment plants into local rivers affects the health of the bay by making water more hypoxic for organisms. Thus, the correct option is A.

What is Local bay?

A Local bay may be defined as an area of the sea or other water bodies which are usually smaller than a gulf. It is mostly surrounded by water.

The runoff water from farms, suburban lawns, and wastewater treatment plants contain an enormous amount of nutrients that assist the growth of algae over the surface of water bodies known as eutrophication.

These algae consume all much of the available oxygen of the water body and make the environment hypoxic i.e. oxygen deficient.

Therefore, the correct option for this question is A.

To learn more about wastewater treatment plants, refer to the link:

https://brainly.com/question/22714269

#SPJ5

can someone answer it! ​

Answers

The answer is because: What is meant by Na+ channel inactivation? The Na+ channel no longer allows Na+ ions to pass through it. What happens when voltage-gated K+ channels open? ... minimum voltage needed to generate an action potential.

photosynthesis and cellular respiration scientific principles

Answers

Explanation:

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. ... While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.

What are the four things that plants need to live

Answers

Answer:

Sunlight, water, carbon dioxide, dirt/soil

Explanation:

SunlightAirWaterSouce of nutritionOptimal Temperature

Question 1: DNA remains in the nucleus. mRNA can travel in and out of the nucleus. Explain how the function of DNA and mRNA differs. ( Will Mark Brainliest and please only answer if your company 100% sure. And Do Not Repost Someone Else's Answer that is on Brainly Or Any Other Websites Please.​

Answers

Answer:

DNA is a nucleic acid that carries the genetic instructions but mRNA carries information from the DNA to the cytoplasm where proteins are made

What is special about each organism in the ecosystem

Answers

Here the answer ⬇️⬇️ thanks me later

What other food do plantains resemble?

A.
sweet potatoes

B.
bananas

C.
white potatoes

D.
beets

Answers

Answer:

B.  bananas

Explanation:

The three most common homoglycans found in nature are cellulose, starch and __________. Group of answer choices Amylose Lactose Fructose Glycogen Sucrose

Answers

Answer:

Glycogen

Explanation:

A program designed to interfere with your computer, device or network's normal operation is called a Answer

Answers

Answer:

A virus

Explanation:

The small-brained Plio-Pleistocene hominins are generally referred to as the _____. The major members of this group are divided into two major groupings, the _____ and the robust forms. Many scientists prefer to separate the robust forms even further into their own genus and/or subgenus, _____.

Answers

Scientists make archaeological findings to discover how human life began as well as the forms of life that existed in the past. The blanks in the sentences above have been filled accordingly;

The small-brained Plio-Pleistocene hominins are generally referred to as the Africanus. The major members of this group are divided into two major groupings, the gracile and the robust forms. Many scientists prefer to separate the robust forms even further into their own genus and/or subgenus, Paranthropus.

The Hominin are primates under which the Paranthropus and Australopithecus. These genii are early relatives of man.

These small-brained Plio-Pleistocene hominins are generally grouped into the gracile and robust forms.

The Paranthropus are the robust genus while the Australopithecus are the gracile genus.

Learn more here:

https://brainly.com/question/7550546

Suggest an explanation for the evolution of the pigeon-like ancestor into the flightless dodo.

Answers

Answer:

It's ancestors were pigeon-like birds which flew to the island millions of years ago. There were no predators on the island. Gradually, the birds became much heavier, lost their ability to fly and evolved into the dodo.

Explanation:

Plan for holidays and special yearly events with your advertising.
True
False

Answers

Answer: False

Explanation: True

Most species of animals do not
drink milk once they have
reached adulthood. Which of
these is an animal that DOES
continue to drink milk into
adulthood?
A. humans
B. snakes
C. spiders

Answers

your answer will be C. spiders

Answer:

if we don't know anything about animals we can say that snakes and spiders complete itself development in an egg.the possible answer is A

Several color variants of a wild berry are shown below in which black is the wild-type phenotype. All of the color variants are due to differing alleles for the same gene. Crosses produce the following results:

Based on the results above, which FOUR of the following statements are true?
• The green color is recessive.
• The green color is dominant to the wild-type black color.
• The blue color is recessive to the wild-type black color.
• The blue color is dominant.
• The blue color is recessive to the green color.
• The green color is recessive to the blue color.
• The blue color is recessive.
• The blue color is dominant to the green color.
• The green color is recessive to the wild-type black color.
• The blue color is dominant to the wild-type black color.
• The green color is dominant to the blue color.
• The green color is dominant

Answers

Answer:

the green colour is recessive

Which of the following is true about the sugar molecules in plants

1. The sugar molecules are made by plants and animals for energy

2. The sugar molecules are the result of a chemical reaction called photosynthesis

3. The sugar molecules are used by the cells as energy

4. The sugar molecules are made from molecules of water and carbon dioxide during cellular respiration

Answers

Answer:

2

Explanation:

Plants make sugar from the sun, water, and carbon dioxide in the air. a chemicls reaction happens causing photosynthesis

can divide indefinitely, and under the right conditions, can (hypothetically) develop into a wide variety
of different specialized cells.
A Regenerated cells
B Embryonic stem cells
C Adult stem cell
D Cancer cells

Answers

Embryonic stem cells!!! B!!

2. According to the graph below, what temperature will result in the highest rate of photosynthesis?
1004 Oxygen flow (ml)
80
50
40
20
0
0
Temperature (1)
50
10
20
30
40
O A 5°C
OB. 40°C
O C.30°C
O D. 25°C

Answers

Answer:

At medium temperatures, between 50 and 68 degrees Fahrenheit, or 10 and 20 degrees Celsius, the photosynthetic enzymes work at their optimum levels, so photosynthesis rates gauge high. Depending on the particular plant in question, set the greenhouse thermostat to a temperature within this range for best

1)
A hummingbird may need to consume up to 50% of its body weight in sugar each day, just to meet its energy needs. Some of this energy is stored and some is used for metabolic activities, but much of the energy is

A)
converted into amino acids needed for the production of starch
B)
released as heat energy back into the hummingbird's environment
C)
changed into radiant energy, which can be used by plants for photosynthesis
D)
used to synthesize inorganic compounds necessary for cellular respiration

Answers

Energy conversions are common in nature. Much of the energy from the breakdown of the hummingbird body weight is released as heat energy back into the hummingbird's environment.

According to the laws of thermodynamics, energy is neither created nor destroyed but is converted from one form to another. Living things take in food to release energy to carry out their daily activities.

Sometimes, energy is obtained from the breakdown of body fat. In either case, much of this energy is released back into the environment as heat energy.

Learn more: https://brainly.com/question/2510654?

Down's syndrome occurs because of a(n)



missing sex chromosome



extra sex chromosome



additional 21st chromosome



additional 18th chromosome

Answers

Answer:

C.Additional 21st chromosome

Explanation:

Hope this helped :)

what is iris diaphragm

Answers

Answer:

noun Optics, Photography. a composite diaphragm with a central aperture readily adjustable for size, used to regulate the amount of light admitted to a lens or optical system. Also called iris.

Explanation:

a flat, colored, ring-shaped membrane behind the cornea of the eye, with an adjustable circular opening (pupil) in the center.
Thanks!


Compare and contrast light microscopes, scanning electron microscopes, and transmission electron microscopes. Sort each statement into the correct box. some statements may apply to more than one type of microscopes. Some statements may not be used.

Answers

Answer: Light microscope:

use a beam of light to produce magnified images

can be used to examine living cells and tissues

Scanning electron microscope:

use a beam of electrons to produce magnified images

can be used to examine DNA

can be used to examine cells

Transmission electron microscope:

use a beam of electrons to produce magnified images

can be used to examine DNA

can be used to examine cells

Explanation: Light microscope: is a commonly used microscope also known as compound microscope. Magnifies images from 40X upto 1000X. It uses ray of visible light to produce a magnified image. The light microscope can be used to view specimen of both living and dead cells or tissues. However, it doesn't give a detailed view of a specimen like electron microscope.

Scanning electron microscope: It uses electron beam as an illuminating source. It has a much higher resolving power than light microscope because it uses electrons instead of light. It magnifies object upto 500000 times the actual size. Internal structures can also be viewed. However, only dead specimen can be used because the beam of electrons can kill the cells. They are of two types:

1. Scanning electron microscope(SEM): an electron beam passes over the specimen's surface and displaces electrons which are then focused on  a screen to form an image. Images appear in 3-D

2. Transmission electron microscope: electromagnets magnify the image by passing beam of electrons through a thin specimen. Images appear in 2-D

Biology which statement applies to cholesterol?
A. It is hydrophobic and found on the outside of the phospholipid biyaler
B. It is hydrophilic and found inside the phospholipid bilayer
C. It impacts membrane fluidity.
D. It is transported in association with glucose in the blood.

Answers

The true statement about cholesterol is that; " It impacts membrane fluidity."

Cholesterol is one of the steroids in the body and serves as a constituent of many hormones. Cholesterol consists of a hydrophilic and a hydrophobic part hence it is able to interact both with aqueous and nonpolar environments.

Cholesterol impacts membrane fluidity in the sense that it regulates the direction of membrane fluidity. At high temperatures, cholesterol raises the membrane temperature whereas at high temperatures, it intercalates between phospholipids thereby preventing stiffening.

Learn more: https://brainly.com/question/865531

Explain the use of oxytocin in labor inductoin in the case of obstructed labor

Answers

Oxytocin is commonly used in modern obstetric practice to increase uterine activity, in cases in which the labor process has failed, with the aim to enable it to progress to a vaginal delivery 3 .

Choose all options that apply. Which of the following medications are considered high-alert medications? | a) Heparin b) Insulin c) Ibuprofen d) Penicillin

Answers

Answer:

Insulin

Pls mark as brainliest answer if it helps you

Other Questions
Why does sugar taste sweetPLEASE EXPLAIN Which surface has the least amount of friction?An ice rinkA grassy fieldA paved roadA sidewalk What differences are there in the growth of the human population compared to the animal/plant population? How did Roosevelt appeal to his audience in this excerpt? A. He tried to convince his audience to support the war by creating an emotional response. B. He used logic to persuade his audience with reasons that they must support the war. C. He appealed to ethics by convincing his audience of his character to get them to support the war. D. He used allusion to convince his audience that going to war was the only way to save the nation. what are the stylistic and iconographic characteristics of fauvism? given: AE and BD bisect each other.prove: triangle ACB - triangle ECD ONLY BOTS WITH LINKS KEEP ANSWERING MY QUESTION PLEASE SOMEONE HELP ME WITH THIS Distinguish the various types of landforms formed by wind. When aggregate demand falls, to avoid a(n) and return to the long-run equilibrium, we must increase aggregate demand. Which sentence uses the underlined vocabulary word incorrectly? A. The duly principal was always late. B. He informed me that I would have to retake the course directly. C. Some infirmities can be overcome by a change in lifestyle. Following the end of the civil war, most freedmen and poor whites in the south earned a living through. At what point does Betty's attitude change? study island The number of board games cannot be negative. Write this constraint.The number of role-playing games cannot be negative. Write this constraint my sheesh hurts my sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurtsmy sheesh hurts The Catholic Church in Europe was responsible for building some of the earliest Which number is greater explain your reasoning .375 or 3/8? help! How is stress the number one factor in academic disruption?I Will Brainliest you Which of the following symptoms is NOT associated with an allergic reaction?Trouble breathingAnxietyOOOFaintingScreaming What is 2346 to the power of 3? What is 4a I will give brainiest to whoevers is first