Tại sao DNA mạch đôi hấp thụ ánh sáng yếu hơn DNA mạch đơn

Answers

Answer 1

Answer:

DNA sợi đôi hấp thụ kém mạnh hơn vì tương tác xếp chồng giữa các base.

Explanation:

Quá trình này được gọi là sự thay đổi siêu sắc tố. Các gốc purine và pyrimidine trong DNA hấp thụ tia cực tím.


Related Questions

as the ball falls back toward the floor, it's____energy increases and its_____decreases​

Answers

Answer: as the ball falls back toward the floor, it's kinetic energy increases and its gravitational potential energy decreases​

Answer:

As the ball falls back toward the floor it’s kinetic energy increases and it’s potential

Explanation:

“How are proteins built using the information provided by a molecule of RNA?” Remember, you are describing processes, so your predication should include steps.

Answers

Answer:  Prediction: RNA determines the sequence of amino acids in proteins and polypeptides by a two-step process: transcription of DNA produces mRNA in the nucleus, then translation of the mRNA to tRNA takes place in the ribosome in the cytoplasm.

Explanation: took test

Fill the blacks: ice is ____but has___ hydrogen bonds than liquid water
A- more dense- less
B- none of the thiss
C- less dense- less
D- more dense - less
E- less dense - more

Answers

Answer:

e

Explanation:

i took the test

What is the fluid compound of blood

Answers

Answer:

The liquid component of blood is called plasma, a mixture of water, sugar, fat, protein, and salts.

Explanation:

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PLEASE I NEED HELP!!! 100 POINTS!!!

Food sample "E" tested positive for which tests?

Answers

Benedict solution sorry if it isn’t the right answer

Replicate the following sequence:
GTA..... TAG.....ATC.....CTC

please someone help me!

Answers

Answer:

I got you.

During replication you are making a copy. Remember that DNA base pairing rules of G-C,A-T.

So for this questio

assuming 5'-3' is written it would be

GAGGATTAC. This is written in a 5' ->3' way however if the question is asking not that then I would put.

CATATCTAGGAG

Explanation:

which scientist was responsible for disproving the theory of spontaneous

Answers

Answer:

Louis Pasteur

Explanation:

Louis pasteur
Ap3x :)

identify the parts of the heart in the corresponding spaces. once you have identified the parts of the heart, label the image provided

Answers

Answer:

no image provided to answer

Explanation:

No links please!!!!
What is some
WATER BIOMES??
List at least 2

Answers

Answer:

ponds, lakes, river, and streams.

Explanation:

Hope this helps :)

pls mark as brainliest :p

And have an amazing day <3

What can be told about the age of the fossils in the diagram?

Answers

Answer:

I think it is a because the oldest things would be farther down in the ground and the youngest would be upper to the ground if that makes sense

Which would conserve more energy if all humans ate only vegetables or ate only meat

Answers

Answer:

There would be more conservation of energy if human beings it only meat.  

Explanation:

this is because meat consists of a significant portion of the fat. The amount of of energy that is liberated per molecule of fat is almost twice the amount of energy that is liberated by carbohydrate or protein. As a result of this the total energy consumption will be more if human being consumes only fat. however it takes more time to digest fat as compared to that of carbohydrate and protein.

Answer:

There would be more conservation of energy if human beings it only meat.

Explanation:

This is because meat consists of a significant portion of the fat. The amount of energy that is liberated per molecule of fat is almost twice the amount of energy that is liberated by carbohydrates or protein.

As a result of this the total energy consumption will be more if human being consumes only fat. However, it takes more time to digest fat as compared to that of carbohydrates and protein.

Explain
4. When are chemical
properties observable?

Answers

they are observable when there is a change in color, smell, temperature, and there is a precipitate or formation of bubbles.

According to the model of the human respiratory system, how do structures in the
respiratory system interact to protect the lungs? How might a sinus infection affect the
rest of the respiratory system?

Answers

Answer: The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.

Explanation:

There are Cilia that protect the airways of the lungs from invaders and pathogens by trapping them. Sinus is present in the nose which blocks the airways while it swells.

What is the respiratory system?

The respiratory system is the system that is responsible for getting oxygen into the body and removing carbon dioxide from the body.

Together, the respiratory and circulatory systems move blood and oxygen throughout the body. The trachea, bronchi, and bronchioles are the pathways by which air enters and exits the lungs. The pulmonary arteries and veins, which attach to the heart, carry blood into and out of the lungs.

Thus, there are cilia that, by trapping invaders and diseases, defend the lungs' airways. The nose has a sinus, which obstructs the airways when it grows.

To learn more about the respiratory system, refer to the link:

https://brainly.com/question/4190530

#SPJ2

What is the connection between the liquid state of water and hydrogen bonding?

Answers

Answer:

In the liquid state, the hydrogen bonds of water can break and reform as the molecules flow from one place to another. When water is cooled, the molecules begin to slow down. Eventually, when water is frozen to ice, the hydrogen bonds become permanent and form a very specific network.

Explanation:

Under what circumstances would molecular motion stop?

Answers

Answer:

All molecular motion stops at 0 degrees Kelvin or -273.15 degrees Celsius.

Explanation:

It is based on molecular motion, with the temperature of 0K, also known as absolute zero, being the point where all molecular motion ceases. The freezing point of water on the Kelvin scale is 273.15K, while the boiling point is 373.15K

Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States?
Global warming
Ozone destruction
Acid rain
Increase in dissolved oxygen levels

Answers

acid rain, its the only thing that has to do with lakes on that list

I- what is epitope? II- what is virus? a living organism? why? types of virus? classification of Corona virus. III- what is vaccine? purpose of vaccination? goal, in terms of immunity? what is Pfizer vaccine? how does it work? please I will need your help thanks​

Answers

Answer:

1.the part of an antigen molecule to which an antibody attaches itself.

2.A virus is an infectious agent that can only replicate within a host organism. Viruses can infect a variety of living organisms, including bacteria, plants, and animals. Viruses are so small that a microscope is necessary to visualize them, and they have a very simple structure.

3. Vaccination is a simple, safe, and effective way of protecting you against harmful diseases

immunity: Protection against a disease

C0VID-19 mRNA vaccines give instructions for our cells to make a harmless piece of what is called the “spike protein.” The spike protein is found on the surface of the virus that causes C0VID-19. First, C0VID-19 mRNA vaccines are given in the upper arm muscle.

Explanation:

What has happened around Jakarta in recent years?



A.Large numbers of city residents have moved away to rural areas.



B.Buddhism has become the dominant religion.



C.Population growth has created a megalopolis.



D.Volcano eruptions have destroyed large sections of the city.

Answers

Answer:

letter b. Buddhism has become the dominant religion Ang sagot diyan

Answer: C Population growth has created a megalopolis.

Explanation: took the test

Which cell is capable of mitosis:
O a. fibrocytes
b. adipocytes
O C. chondrocytes
d. osteoblasts
e. osteoclast

Answers

Answer:

Osteoclast

Explanation:

AIDS is the fifth and most severe phase of HIV infection

Answers

Answer:

HIV is the virus that causes Aids

last stage is Full blown stage

a ___ specimen should be used for the CRP test.
A: plasma
B: serum
C: urine
D: spinal fluid

Answers

Answer:

I think your answer is B. Serum.

Warm water rises because it is ............ than cool water.


a) warmer

b) cooler

c) more dense

d) less dense



**Answer and I will give you brainiliest**​

Answers

Answer:

I'm pretty sure the answer is D.) Less Dense

Explanation:

Answer:

d) less dense

Explanation:

When fluids (liquids and gases) are heated, they expand and therefore become less dense. Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water.

The difference between a food web and biogeochemical cycle is -
O Food webs only pertain to ecosystems
O Geochemical cycles lose more energy
Geochemical cycles don't lose anything, food webs lose energy
O Food webs lose energy and geochemical cycles lose nutrients

Answers

Answer:

Food webs only pertain to ecosystems.

Explanation:

How would the equilibrium change if the ocean became more acidic?

Answers

Answer: more H2CO3 is made

Explanation:

Acidic water of the ocean creates instability in the ocean ecosystem.

What happens when ocean become acidic?

If the acidity of ocean increases the corals can't build skeletons and the shellfish also can't build the shells which they need for protection.

Corals are particularly important because they provide homes for many other sea creatures so we can conclude that acidic water of the ocean creates instability in the ocean ecosystem.

Learn more about equilibrium here: https://brainly.com/question/517289

What did belt mean by “ I saw the handiwork…starting with the road itself”

Answers

Answer:unsure

Explanation:

unsure

True/false: If the earths axis were perfectly vertical at 0 degrees we would not have any seasons

Answers

Answer: its true

Explanation:

the seasons are caused because of the tilt. without it, then there are no seasons at all. and because the tilt faces the sun and without that tilt then no seasons

HEYYYYYYYYYY PLEASE HELP!!!!!

Answers

Answer:

Velocity

Explanation:

Given the change in positive (direction) over time we are given the velocity formula.

V = Change in direction/Change in time

Since we are given a direction we can rule out speed as well as direction in itself. We can also rule out acceleration because that is the change in Velocity divided by change in time.

so who is all virtual

Answers

Answer:

Me

Explanation:

i rather be in person

States types of nervous systems ​

Answers

Answer:

The nervous system includes both the Central nervous system and Peripheral nervous system. The central nervous system is made up of the brain and spinal cord, and the peripheral nervous system is made up of the Somatic and the Autonomic nervous systems.

Explanation:

Answer:

The nervous system has two main parts:

The central nervous system The peripheral nervous system

Explanation:

The central nervous system is made up of the brain and spinal cord.

The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

A scientist hypothesizes that the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

Answers

Answer:

9

Explanation:

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Someone plz help me :( Inception of oil boom in ---- has resulted in the depletion of water resources.a.1960sb. 1870sc.1970sd. 1917s how to get all one hundreds on report card I need help Im going to fail Pls explain Pls and thank Write the equation of the line perpendicular to 2x+3y=7 that passes through the point (-4, 6). Write your answer in slope-intercept form. Voter Turnout Among Citizens, by Age GroupVoter TurnoutPresidential Elections Midterm Elections2000 2004 % Point Increase(2000 to 2004) 2002 2006 % Point Increase(2002 to 2006)Ages 18-29 40% 49% 9% points 22% 25% 3% pointsAges 30-44 59% 62% 4% points 42% 43% 1% pointAges 45-59 67% 70%; 3% points 55% 56% 1% pointAges 60-74 72% 73% 1% point 64% 64% 1% pointAges 75+ 67% 69% 2% points 60% 61% 1 % pointSource: Authors' tabulations from the Current PopulationSurvey, November (Voting) Supplement, 2000-2006.Which of the following describes when a person is most likely to vote? voter is under age 29 and it is a presidential election voter is under age 29 and it is a midterm election voter is over age 60 and it is a presidential election voter is over age 60 and it is a midterm election I need help!! please, you dont even have to do it all just explain to me how to do the first one Ill catch on b)Using the formula from part a, calculate the retail price for each quantity range.( Hope this helps guys )ANSWER:$45.00$41.40$37.80$34.20$30.60EXPLANATION:Ok so the first box is 25.00 your going to multiply .80 whatever your awnser is for that which is 20 then you take that and add the 25 from the box and get 45 and thats your awnser and just repeat the process for the other boxes . Discuss the difference between Old regionalism and New regionalism GRAMMAR HELP PLEASE 30pts work out the value 4^2 x2^4 what should the students to reduce stress and pressure? How did you feel when you were treated unfairly? Please help me Whats an equivalent fractions for 6/8 with a 20 as the new denominator someone help me please How is unemployment in the United States measured? What aspects of this phenomenon does the unemployment rate measure and what aspects does it fail to capture? You and a friend get food you have $100 the food 60.85 and the tax is $8 and you wanna leave a 20 tip how much money will you have leftover? you have 120 cows and 90% of them are female how many female cows do you have please help me solve for X