Explain how 2 polynucleotides can twist helically around each other to form a double helix of DNA?

Answers

Answer 1

Explanation:

The antiparallel arrangement of the two strands is what causes the twist. Because the strands run in opposite directions, they pull the sides of the molecule in opposite directions, causing the whole thing to twist around itself. Most naturally occurring DNA spirals clockwise.


Related Questions

Which of these will be the best for a jungle environment

Answers

I think answer choice B, I believe its a black panther

Multiple choice please help!

Answers

Answer:

A=T is the answer ..............

Answer:

The correct answer is A) A=T

Explanation:

what is another name for the polymers of carbohydrates?

Answers

Answer:

polysaccharide

Explanation:

what is the single greatest threat to biodiversity?

Answers

Answer:

Habitat loss

Explanation:

in fact it is the second largest threat to our existence on this planet next to Climate Change.

How long do scientists estimate that the sea has been at its current level?
250 years
2,500 years
25,000 years
250,000 years

Answers

Answer:

250,000

Explanation:

Answer:

A. 250 years

Explanation:

NASA measures sea level around the globe using satellites. The Jason-3 satellite uses radio waves and other instruments to measure the height of the ocean's surface – also known as sea level. It does this for the entire Earth every 10 days, studying how global sea level is changing over time.

Which statement is true about DNA base pairing rules?
A- cytosine can pair with guanine only
B- adenine can pair with cytosine only
C- Adenine can pair with thymine or cytosine
D- cytosine can pair with Adenine or guanine

Answers

Answer is A - Cytosine can pair with guanine only.


It would not be the others because:
Base pairs are A and T/U, C and G.

B) Adenine does not pair with cytosine.
C) Adenine can pair with thymine, however it does not pair with cytosine.
D) Cytosine can pair with guanine, but does not pair with adenine.

Which macronutrient promotes root growth?

Answers

Answer: Phosphorus (P)

Explanation: Phosphorus is one of the important macronutrients of plants which promotes the plant root growth.

Phosphorus in good amount would lead to -

• Extensive roots

• Fewer shoots

• Stunted growth

Whereas if the plant deficits Phosphorus then it would lead to

• Poor root growth

• Few flowers or aborted flowers

• No fruits

why would a light wave speed up if it moved from air into hydrogen

Answers

"Mr. Bombastic, tell me fantastic. Touch me
na me back. She says I'm mister r00000-
mantic, call me fantastic. Touch me na me
back. She says I'm Mr. Ro- Smooooth" - Biggie
Cheese

The ducts or tubes responsible for receiving the ovulated oocyte and providing the site for fertilization are the ________.

Answers

The Fallopian tubes (of uterine)

21. Explain How did Earth's environments change
from the Neogene to the Quaternary Period?

Answers

Answer:

Climate change and the developments it spurs carry the narrative of the Quaternary, the most recent 2.6 million years of Earth's history. Glaciers advance from the Poles and then retreat carving and molding the land with each pulse. Sea levels fall and rise with each period of freezing and thawing.

Explanation:

What names are used for the top process (requiring oxygen) and the bottom process (taking place without oxygen)?





Oxygen present → Krebs Cycle → Electron transport chain

Glycolysis
→ Lactic acid fermentation
Oxygen not present →
Alcohol fermentation

What names are used for the top process (requiring oxygen) and the bottom process (taking place without oxygen)?

How many ATP are produced by each process shown?

Answers

Answer:

Processes that takes place with oxygen is aerobic and processes that takes without oxygen is anaerobic.

Glycolysis and Krebs Cycle produces 2 Atp and ETC produces 34 Atp

What happens to mRNA after transcription ?

A- It is transported to a mitochondrion for respiration
B- It exits the cell through the plasma membrane
C-It remains in the nucleus to begin translation
D-It enters the cytoplasm and goes to a ribosome

Answers

I think the answer is A
The answer is D - It enters the cytoplasm and goes to a ribosome

After transcription, mRNA leaves the nucleus of a cell through the nuclear pores, entering the cytoplasm and goes to a ribosome to begin the translation process of synthesising proteins

If red blood cells are placed in distilled water and examined under a microscope
no cells are seen.
Explain why no red blood cells would be seen

Answers

Answer:

The distilled water made the red blood cells burst.

Explanation:

Distilled water is a hypotonic solution containing ZERO salt content. It is 100% water, making the red blood cells (RBC) take in water that causes the RBC to swell, then burst.

which statement best describes why genetic variation is beneficial to populations of organisms A. Individuals look different from one another. B . Only one parent is needed to produce offspring. C. Populations of the organism increases more rapidly. D. Species can better survive environmental changes.

Answers

Answer:

Explanation:

Its D, species began having more beneficial adaptions to their environment causing them to live longer.

Answer:

It's D. Species can better survive environmental changes.

Which statement best describes scientists who contributed to the current body of scientific knowledge?
A. they were made up of men and women throughout history of different countries
B. they were mainly ancient philosophers whose theory stood the test of time
C. they were mainly from European countries such as England and France
D. they were wealthy men during the 20th century ​

Answers

Answer:

A

Explanation:

Answer:

A

Explanation:

What safety precautions must I take in a minerals investigation?

Answers

Safety goggles, gloves, push hair back if long

In the case of blood types, both alleles A and B may be expressed as the phenotype. This exemplifies:

Answers

Answer:

Codominance

Explanation:

Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.

All matter is composed of very small particles called:

Answers

Answer:

Atoms

Explanation:

The surge of blood entering arteries causes an expansion and recoil of the arterial wall producing a _____________ that can be felt externally.

Answers

Answer:

I think the answer you're looking for is pulse

is the DNA in the form of chromatin or chromosomes when a cell finished cytokinesis

Answers

Answer:

Cell cycle consists of interphase and mitosis. During interphase there are 3 phases- G1, S and G2 phases. G1 is the resting phase after previous mitotic phase, S phase is DNA synthesis phase and G2 phase is again resting phase.

DNA synthesis occurs before mitotic phase which is the actual cell division phase and chromosomes are condensed during mitotic phase therefore it's in the chromatin form that DNA is synthesised.

Explanation:

Have a great day!

Study the diagram showing the range of temperature in the Earth’s layers.

Which temperature most likely corresponds to the asthenosphere?

1,613°C
2,521°C
3,628°C
6,217°C

Answers

i think c is the correct option...

Answer: a) 1,613°C

Explanation: just took the test

What are three reasons the Fawnsfoot mussel is at risk??

Answers

Answer:

The human need for water is now the biggest danger to mussels. Habitat destruction, fragmentation from dams, and more recently an intense drought in the southern plains have all contributed to destruction of mussel beds.

Explanation:

the codon read using the genetic code to determine the amino acid is found in the

tRNA, mRNA, rRNA or DNA
helpp!!!!!!!!!!!

Answers

Answer:

tRna and mRna

Explanation:

tRna and Mran

HELP PLS!!!!!!!!!!!!
Beaches are monitored to protect public health. Waterborne pathogens can cause illnesses. Which of the following is not a common type of pathogen at the beach?

Bacteria
Protozoa
Viruses
Worms

Answers

ALL these microorganisms can represent common types of pathogens at the beach. In consequence, it is imperative to take precaution measures to avoid infections.

The sand at the beach may contain dog feces, which is known to transport Toxocara canis, a parasite roundworm able to infect humans.

Moreover, samples of beach sand may also contain different types of pathogenic bacteria (e.g., Staphylococcus species, E. coli, Enterobacteriacea, etc) and viruses (e.g., enteroviruses, hepatitis A, Norwalk viruses, reoviruses, rotaviruses, etc).

In consequence, it is imperative to wash hands with soap and water when touching beach sand that is suspected to be contaminated.

Finally, marine water may also be contaminated with different zoonotic protozoa such as, among others, Giardia, Cryptosporidium and Toxoplasma.

Learn more in:

https://brainly.com/question/1542536

Answer:

The correct answer is worms.

Explanation:

Yes, all of these can be found at the beach, but worms are not common. Also, I took the test lol!

The lipid that makes up most of the lipids in our body is: Group of answer choices lecithin triglyceride phospholipid cholesterol

Answers

Answer:

triglyceride

Explanation:

the most common lipid.

The network of connective tissue fibers which pass through the tissues of the body and allow for the efficient movement of immune system cells is the

Answers

Answer:

reticuloendothelial system

Explanation:

The reticuloendothelial system (RES) is a heterogeneous population of phagocytic cells in systemically fixed tissues that play an important role in the clearance of particles and soluble substances in the circulation and tissues, and forms part of the immune system.

what is pathogen????​

Answers

Pathogen is kinda disease, virus, bacteria or other microorganisms ( which can cause disease)

Answer:   A pathogen is usually defined as a microorganism that causes, or can cause, disease :)

Explanation:

There are different types of pathogens, but we're going to focus on the four most common types: viruses, bacteria, fungi, and parasites.

it is 21,00 kilometers around the earth and the earth rotates in 24 hours how fast is it rotating

Answers

Answer: 21,000x24= 504,000 kilometers per hour.

Explanation: Hope that helped you.

Yong is a massage therapist. Which field of science would Yong most likely need to know the most about in order to do his job? A. Life science B. Space science OC. Earth science O D. Physical science​

Answers

Answer:

D) physical science

Explanation:

physical science is the only science that would benefit his work as a massage therapist

Answer:

D)

Explanation:

Yong would have to know physical science because your messaging the human body which is physically speaking is touch.

hope that help you

Describe the composition of the cell membrane

Answers

Explanation:

With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.

Other Questions
Destiny just received two separate gifts from her great-great-grandmother.The first gift is a box of 18 chocolate candy bars, and the second gift is a pack of 12 cookies.Destiny wants to use all of the chocolate candy bars and cookies to make identical snack bags for her cousins.What is the greatest number of snack bags that Destiny can make? Olympia ate lunch at a restaurant. The amount of her check was $6.89. She left $8.00 on the table, which included the amount she owed plus a tip for the waiter. Which equation shows t, the amount of her tip, in dollars?6.89 + t = 8.006.89 - t = 8.006.89t = 8.006.89 = 8.00 Divided by t Using the graph, determine the equation of the axis of symmetry. Write THREE significance of atmosphere the base of a right prism is an equilateral triangle each of whose sides measures 4cm. The altitude of the prism measures 5cm. Find the volume of the prism Which statement best summarizes China's trade relationship with Europeduring the 19th century?A. China established spheres of influence that encouragedEuropeans to trade in the country.B. China hoped to imitate European technology and bought hugequantities of European goods.O C. China was willing to import European goods but would not exportits own products.O D. China had little interest in European goods and resisted pressureto open itself to trade. Please answer correctlyUrgentwill give the brainliest! 1. In which of the following situations may 10 access be used?O An extremity with signs of infectionO An extremity with signs of a crush injuryO An extremity with a previous unsuccessful 10 attemptO An extremity with slow cap refill time A sealed Ecosphere is able to perpetually sustain life until what happens? A. Oxygen is depleted. B. The producers use up all the carbon dioxide (CO2). C. Energy makes it to the highest trophic level. D. Necessary minerals become locked in deposits. The ultimate goal of the endangered species act is What are some clues that the narrators point of view is third-person omniscient? Check all that apply.the use of the pronouns she and hethe use of the pronoun Ithoughts and feelings limited to Lizziethoughts and feelings limited to Turnerknowledge about what is happening in more than one place at once which behavior would best descibe someone who is productive at work a Multitasks as much as possibleb takes frequent breaks to answer personal calls and emails c sticks to routines and prioritizes work d waits for directives from the boss before comleting simple tasks WILL GIVE BRAINLIEST Explain defense industry problems in the light of waste and cost overruns. How unethical business practices are carried out in completing defense projects The polynomial P is graphed.5+P4+3-3-2-11-2+-3+-4-What is the remainder when P(x) is divided by (x + 2)? A gas station owner properly filed a breach of a noncompete clause in an employment contract case in federal court against a former manager, who began building a similar gas station across the street. The owner's complaint requested money damages and an injunction to stop the construction. The former manager wants a jury trial, but the gas station owner prefers that the issue be litigated before the judge. Can the former manager demand a jury trial for both claims Two round concentric metal wires lie on a tabletop, one inside the other. The inner wire has a diameter of 21.0 cm and carries a clockwise current of 16.0 A , as viewed from above, and the outer wire has a diameter of 32.0 cm.Required:a. What must be the direction (as viewed from above) of the current in the outer wire so that the net magnetic field due to this combination of wires is zero at the common center of the wires? b. What must be the magnitude of the current in the outer wire so that the net magnetic field due to this combination of wires is zero at the common center of the wires? solve the problem below What is the verbs and adverbs in this passage please help Pinacle Corp. budgeted $229,130 of overhead cost for the current year. Actual overhead costs for the year were $209,320. Pinacle's plantwide allocation base, machine hours, was budgeted at 45,320 hours. Actual machine hours were 44,020. A total of 100,250 units was budgeted to be produced and 98,000 units were actually produced. Pinacle's plantwide factory overhead rate for the current year is: