3.When Watson and Crick built and proposed the DNA structure, they determined three important features.
What were the three features they proposed? Select all that apply.
Multiple select question.
A) Two outside strands consist of alternating deoxyribose and phosphate.

B) Two outside strands consist of alternating ribose and phosphate.

C) Guanine and cytosine bases pair to each other by two hydrogen bonds.

D) Guanine and cytosine bases pair to each other by three hydrogen bonds.

E) Guanine and adenine bases pair to each other by three hydrogen bonds.

F) Cytosine and thymine bases pair to each other by two hydrogen bonds.

G) Adenine and thymine bases pair to each other by three hydrogen bonds.

H) Adenine and thymine bases pair to each other by two hydrogen bonds.

Answers

Answer 1
A,D,H

The backbone of DNA is deoxyribose and phosphate while RNA is composed of ribose and phosphate. C and G (curvy letters pair together) pair together with 3 hydrogen bonds while A and T pair together with 2 hydrogen bonds.
Answer 2

According to Watson and Crick, DNA replication used each strand's nucleotides as a template for new strands. Thus,option A, D, H is correct.

What is the Watson and Crick model about DNA?

Watson-Crick DNA structure. The molecule of DNA is a double-stranded, helical structure. It consists of two sugar-phosphate backbones on the outside and nitrogenous base pairs on the inside, bound together by hydrogen bonds.

DNA behaves like a double helix made up of two protracted, intertwined helical strands.

In their model, the bases along one DNA strand matched the bases along the other DNA strand. Each DNA strand comprised discrete units known as bases.

Therefore, Watson and Crick built and proposed the DNA structure, which determined important features of DNA.

Learn more about Watson and Crick here:

https://brainly.com/question/7849006

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Related Questions

OMG GUY HELP MEEEEE Write the answers to these questions, Denise tested a plant to see if it would grow toward light. She placed a seedling next to a sunny window. What evidence will she most likely observe after a week that supports her claim? Explain how the evidence supports her claim. Make a claim about how Jorge's results will compare to Denise's results. Explain your reasoning​

Answers

Explanation:

After a week the plant will have grown out and toward the window. the plant will not be standing straight up, so it will be laying down toward the window. Because the plant is leaning toward the window, where the sun shines in, it proves that plants grow toward sunlight.

Does anyone have the file for a biology lab. The lab is...

Lab: Blood Typing
Assignment: Lab Report

The name of the class is Biology B-IC

Answers

Answer:

are those the answer choice?

Explanation:

PLEASE HELP!!
Which sector creates the most fossil fuel emissions?

agriculture
transportation
electricity generation
industry

Answers

Answer:

Transportation

Explanation:

...............

Which three terms relate to sexual reproduction but not to asexual reproduction?
A. Sperm
B. Mitosis
C. Gametes
D. Meiosis

Answers

Answer:

I believe its A, C, and D

Explanation:

We added 30 N of force to the right side of the box. What is the net force acting on the box

Answers

If it is just 30 on the left and 30 on the right the net force is 0. However, if you mean adding another 30 on top of what is in the image then the bet force is 30

A break in the earths crust where slabs of crust slip past each other is called

A. Plate tectonic
B. lithosphere
C. Continental drift
D. Volcano

Answers

Answer:

They should have fault for an answer choice because that the correct anwser

but the close thing to is a  plate tectonic you should ask your teacher about this question

Explanation:

continental drift... i think

Carbon Cycle Changes Lab
Lesson 12 Earth Science B Unit 4 Earth's Processes Climate Change
Needs to be original.

Answers

I can't see the picture soo I don't understand what your question 8s

Can someone please help me with #22 I would appreciate it.
Thanks

Answers

Answer:

Glycolysis occurs in the Cytoplasm

Electron Transport Chain occurs in the Mitchondria

Krebs Cycle also occurs in the mitchondria

Explanation:

Glycolysis is the first step in the breakdown of glucose to extract energy for cellular metabolism. Nearly all living organisms carry out glycolysis as part of their metabolism. The process does not use oxygen and is therefore anaerobic. Glycolysis takes place in the cytoplasm of both prokaryotic and eukaryotic cells.

The electron transport chain is the last stage of the respiration pathway. It is the stage that produces the most ATP molecules. The electron transport chain is a collection of carrier proteins found on the inner membrane of mitochondria. NADH  hydrogen ions and electrons into the transport chain.

The Krebs cycle happens only within the mitochondrial matrix. Pyruvate is formed in the cytosol of the cell, then imported into the mitochondria.

(Credits to websites)

Which two phrases most likely explain how the rock shown here formed?

Answers

Answer: a and b

Explanation: i think this is the answer i hop this is helful

NY Hebor video. Summary opinion

Answers

Answer:

aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Explanation:

aaaaaaaaaaaaaaaaaaaaaaaa

suggest the name of an enzyme used by maggots to digest bacteria

Answers

Answer:

the name of the enzymes that maggots use is "proteolytic enzymes"

Explanation:

Iuteus. In addition to the antibacterial substances, maggots also posses diverse proteolytic enzymes, which are capable of digesting Bacteria

is it close to the end of the world

Answers

Answer:

i think so because of co

vid-19

Answer:

Yes it is. I know this because it talks about the last day's in the bible.

"But know this, that in the last days critical times hard to deal with will be here.  For men will be lovers of themselves, lovers of money, boastful, haughty, blasphemers, disobedient to parents, unthankful, disloyal,  having no natural affection, not open to any agreement, slanderers, without self-control, fierce, without love of goodness,  betrayers, headstrong, puffed up with pride, lovers of pleasures rather than lovers of God,  having an appearance of godliness but proving false to its power; and from these turn away."

-2 Timothy 3:1-5

Explanation:

When crossing over take places chromsomes
A.
Decrease in number
B. Produce new genes
C. mutate in the first division D. exchange segment of DNA

Answers

Answer: D

Explanation:

Crossing over refers to homologous chrosmomes exchanging DNA which creates variation of chromsoomes that are inheried by offspring.


Tuesday 3/2/2021 Bellringer There are levels of
cellular organization within multicellular
organisms. Which of the following statements is
true?
A. Tissues are made up of organs,
B. Organs are made up of organisms.
C. Cells are made up of organ systems,
O
D. Organ systems are made up of organs
Turn in

Answers

D is because the rest does not add up

What is the sugar found in DNA that makes up the sugar-phosphate backbone of the double helix?

Answers

Answer:

deoxyribose

Explanation:

A phosphate backbone is the portion of the DNA double helix that provides structural support to the molecule. DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.

I hope that this helped you ;)

Which will cool down faster overnight, the water in the pool or the air above the pool? How do you know

Please help

Answers

The water above the pool because it’s closer to the surface so there is more air flow to it

A type of cell division that results in diploid cells:
meiosis or mitosis
A type of cell division that results in haploid cells.
meiosis or mitosis

Answers

Answer:

the first one is mitosis

and the second one is meiosis

Answer:

Diploid cells: Mitosis

Haploid Cells: Meiosis

Heyyyyyy I NEED HELP ASAP IVE BEEN DOING WORK ALOT ALL WEEK IM SO TIRED CAN SOMEONE JUST FINISH THSES THREE PAGES!!!!! ill give yall my 163 points :)

Answers

Answer:

Hmmm.....firstly it depends which grade ur in....well in general I am ready

6.) the process by which large molecules are expelled from a cell

Answers

Answer:

b

Explanation:

Guys pls help me!!!!!!!!!!!

Answers

Answer : true

Hope this helps!
The answer is true!!!

PLEASE ANSWER I NEED HELP I DONT WANNA TAKE BIO AGAIN

how does the operator region of dna work to regulate gene expression?.

Answers

Answer:The promoter is found in the DNA of the operon, upstream of (before) the genes. ... Some regulatory proteins are repressors that bind to pieces of DNA called operators. When bound to its operator, a repressor reduces transcription (e.g., by blocking RNA polymerase from moving forward on the DNA).

Explanation:

Please answer these questions but if u don’t know the answer then don’t say anything pleaseeee help!!!thank u.

Answers

In order:

electrons

electrons

protons

4

3

3

The amount electrons and protons balance out their charges, leading the charge to be 0

This answer depends on what you learned in class:

They discovered the presence of neutrons after experimenting.

or

They realized that these neutrons had to exist to make a stable nuclei and balance out the mass.

(both answers are correct, so you can combine them if you want)

What are the answers?​ plzz help

Answers

The picture it’s not clearly

three body cells in the human body which is attacked by the plasmodium parasite​

Answers

Answer:

Skin, Liver and Blood are infected.

All the following are abiotic factors except
A.Fungi
B. Bacteria
C. Plants
D.tomato

Answers

Answer:      tomato is not a adiotic

Explanation:

The image on the left shows a normal red blood cell, and the image on the right shows a cell that has been put into a new solution. The circles represent the salt in the solutions.



Which statement describes the motion of the water molecules in this situation?



The water molecules move by active transport into the cell from low water concentration to high water concentration.
The water molecules move by osmosis into the cell from low water concentration to high water concentration.
The water molecules move by osmosis into the cell from high water concentration to low water concentration.
The water molecules move by active transport into the cell from high water concentration to low water concentration.

Answers

the third answer is correct

The water molecules move by osmosis into the cell from high water concentration to low water concentration.

PLEASE HELP!!
Which sector creates the most fossil fuel emissions?

agriculture
transportation
electricity generation
industry

Answers

Answer:

transportation

Explanation:

Transportation (28.2 percent of 2018 greenhouse gas emissions) – The transportation sector generates the largest share of greenhouse gas emissions.

hope this help

In this lab, you will simulate birds with three different beaks. After watching the birds feed, you will remove fruit to simulate a change in the environment. What question are you answering by doing this observation?

Answers

Answer:

How does a change in food resources model the type of beaks in birds?

Explanation:

We know that phenotype results from the interaction of the genotype and the environment. Any change in the environment produces a change in the phenotype of the animals. By performing this experiment, we probably want to know the influence of the environment on animals. In this particular example, we change a source of food by removing fruit (which would be acting as the independent variable of the experiment) and evaluate its effects on the birds´ beak (the dependent variable). Which of the three different beaks increases their frequencies by removing the fruit, and which one decreases its frequency.

So here, the absence of fruit is acting as a selective ecological pressure on birds. It is modeling birds´ beaks and adapting animals to feed on some other resource.

Change in food resources ---> Selective ecological pressure.Change in beaks frequency----> Adaptative response.

You are a genetic counselor. A couple comes to you for advice. The female is eight weeks pregnant with their first child. Both are Ashkenazi Jews, a segment of the population in which Gaucher disease is relatively common. Gaucher disease is a condition that can range from mild and treatable symptoms to severe, debilitating problems. The disease is an autosomal recessive pattern. Which of the following statements is true?

The child will likely have Gaucher disease if she has inherited recessive alleles from each parent.
The child will likely have Gaucher disease if she has inherited one dominant allele from her father.
The child will only have Gaucher disease if she has inherited both dominant alleles from her parents.
The child will only have Gaucher disease if she has received one recessive allele from her mother.

Answers

A) The child will likely have Gaucher Disease if she inherited RECESSIVE alleles from each parent.

D is ruled out because if the child only received one recessive allele but her other allele is dominant, then the most she could be is a carrier. Dominant over recessive.

C is wrong because the question states that the disease is a recessive pattern, while C is stating that the child would only have it if it inherited dominant alleles.

B is wrong. Like D, it’s dominant over recessive and the most the child could be is a carrier.

Therefore, I believe the answer is A, the first one.

Someone answer these 2 pls
How does homologous recombination (crossing over) increase genetic variation?

Answers

Answer:the third one

Explanation:i have done this

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