What is the first step in DNA replication?
a
A new strand of DNA is created.
b The DNA helix unwinds like a zipper.
The two strands of DNA rewind into the double
helix.
d
none of the above

Answers

Answer 1

Answer:

B

Explanation:


Related Questions

5. Why might a cell need to phagocytose?

Answers

Answer:

Phagocytosis is a critical part of the immune system. ... By knowing the enemy, the cells of the immune system can specifically target similar particles circulating in the body. Another function of phagocytosis in the immune system is to ingest and destroy pathogens (like viruses and bacteria) and infected cells.

Explanation:

which nitrogen bases are pyrimidines

Answers

Thymine and Cytosine are pyrimidine nitrogen bases.

Answer:

Thymine and Cytosine

A body cell has been growing and synthesizing proteins. In the nucleus of this body cell, DNA replication is taking place, and a copy of the cell's genetic material is copied. Which of the following is the best conclusion you can make about the life cycle of this cell?

Answers

The best conclusion you can make about the life cycle of this cell is that the cell is in the S phase of interphase and will move next to the G2 phase.

S phase (Synthesis Phase) is the phase of the cell cycle in which all of the chromosomes (DNA) are replicated within the nucleus. During this phase, the DNA is effectively doubled as each chromosome contains two sister chromatids. After the S phase, the cell enters the G2 phase where various proteins (such as microtubules) are synthesized.

HELP ASAP
Joe is experimenting to determine which liquid will cause bean plants to grow faster. He watered the plants with equal amounts of liquid and measured their height every other day. The plants are in the same pots with different soils and placed in the same location. Will Joe be able to obtain reliable data to write a supported conclusion?
Yes, because he is only observing the height of the plant.
Yes, because he is consistent with watering the plants.
No, because he used different soils.
No, because he uses only one type of plant.

Answers

Answer:

No, because he used different soils.

Explanation:

which liquid will cause bean plants to grow faster.

He watered the plants with equal amounts of liquid and measured their height every other day.

The plants are in the same pots with different soils and placed in the same location.

Ok so last statement made the experiment wrong.

As a constant variable the soil should be the same for all plants only the liquid should change

PLEASE HURRY I AM TIMED!!!
Are aliens real? Explain your answer.

Answers

Answer:

No, not according to any sciences (unless you mean aliens as in immigrants)

Explanation:

There is no way that we are the only living thing in the entire world. There has to be another species out there.  They might be wondering if there is another living thing out in space too.

List body external and internal defenses

Answers

Answer:

External would be skin, nose hair, etc. Internal is white blood cells and bacteria that the body makes to help prevent infections.

Explanation:

The electrons that travel through electron transport chain #1 (and that have been excited off of the chlorophyll molecules on photosystem #2) are used to

Answers

Answer:

energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.

Explanation:

Hope this helps :)

Will the geosphere suffer long term or short term damage from a forest fire? Explain.

Answers

Long term I think because it takes a while for forest to be filled again

what is the greenhouse effect


please give me the answer of this question

don't spam​

Answers

Answer:

the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.

Explanation:

I think it can be incorrect also so refer to Science teacher also. also.

Which statement is true about gold and helium?
A. They both occur as a gas at room temperature.
B. They are both made of subatomic particles.
C. They are both used in balloons.
D. One of made of protons and the other of only electrons.

Answers

Answer:

The answer is B

B. They are both made of subatomic particles.

A dead organism takes matter out of the ecosystem cycle and that matter
can never be used again. *
O True
False

Answers

Answer:

Decomposers break down dead organisms into nutrients and gases so that they can be used by other organisms. Nutrients can enter or exit an ecosystem at any point and can cycle around the planet.

Answer:

False

Explanation:

The gender of offspring from sexual reproduction is determined by

A the mother only, because she has two X chromosomes.

B the father only, because he has one X and one Y chromosome.

C environmental factors.

D polygenetic inheritance.​

Answers

Answer:

B. the father only,because he has one X and one Y chromosome

6B(SCIENCE) (6BB OOB)
4
What is the difference between evaporation and boiling? *
(1 Point)
A) There is no difference - they are exactly the same.
B) Evaporation, unlike boiling, occurs at all temperatures.
C) In evaporation, unlike in boiling, there is no state change.
D) In boiling, unlike in evaporation, the liquid volume reduces.
This question is required.​

Answers

B) Evaporation , Unlike boiling, occurs at all temperatures

PLEASE HEL ME!!!!!!!!!

Answers

Answer:

the accurate one is layer C is younger then layer A

Explanation:

Answer:

I think it would be safe to say that the answer is:

Layer C is younger than layer A.

Explanation:

Looking at the graph it's shown D-A youngest to eldest and knocking out the fact that Layer D is above C and it appears B is not the eldest layer, I'm sure the first point is the answer!! I hope this helped!


What is a significant benefit of studying fossils?

Answers

Fossils give clues about environmental changes where the organism lived, fossils can be used to date the time period of rocks and rock layers when the organism lived, fossils can give clues of changes in the organism's body structure over time.

Which level of organization is formed when a group of organs work together to perform complex functions?
Molecule
Organ
Organ system
Tissue

Answers

Answer:

Organ system is the correct answer, i took the test and passed.

( trust me ;)

Explanation:

Please give me brainlyest

I hope this helps

( Please Subscribe to Yaya Playz 23 ) for a free shout out)

Answer: i think it is the 3rd one but i am not sure  

Explanation: hope you pass the exam :)

what is the problem with organizing organisms taxonomically purely based on their physical traits

Answers

Answer:

See the answer below

Explanation:

The problem with grouping organisms together taxonomically based on their physical traits is that organisms that not genetically or evolutionally similar would be grouped together. Grouping would be based entirely on superficial similarities instead of combining different features such as genetics, nutrition, the complexity of bodies, etc.

Based on physical traits, for example, all flying organisms will be grouped together. Birds, flying insects, bats, etc. would be grouped together, whereas, they are quite different from one another when it comes to the complexity of bodies and other features. Even though some insects have wings and can fly like birds, insects have exoskeletons and birds do not, the body of birds is more complex than that of insects, and evolutionally, birds are more advanced than insects.

Hence, grouping organisms based on their physical traits only would be too superficial and not reflect the true relationships between organisms.

Summarize cell division in prokaryotes

Answers

According to the research, the correct answer is that unicellular living beings like prokaryotes have their cell division by binary fission, forming two identical individuals (daughter cells).

What is binary fission?

It refers to the process of cell division where first the deoxyribonucleic acid (DNA) is duplicated and then cytonesis occurs, which involves the separation of the cytoplasm.

In this sense, it gives rise to two daughter cells with identical genetic material, this is the reproduction method shared by certain yeasts, algae, bacteria and other prokaryotic organisms.

Therefore, we can conclude that the cell division mechanism of prokaryotes is through binary fission where two daughter cells arise.

Learn more about binary fission here: https://brainly.com/question/12196278

#SPJ1

Which pair of waves could overlap to produce a wave with a higher amplitude through interference?​

Answers

Answer:

D: Two waves of the same amplitude with crests that are perfectly aligned

Explanation:

A P E X

Which shows the levels of organizational hierarchy listed from least complex to most complex?
O organism, population, community
O species, ecosystem, community
O population, community, species
O organism, community, population

Answers

Organism, population, community (first choice)



I hope this helped out, have a nice day! :)

What is a similarity and a difference between the stars Rigel & Betelgeuse?​

Answers

Stars as large as Betelgeuse are very unusual. In contrast, Rigel, the bright, bluish-white star at the southwest corner of Orion, is smaller and much hotter than Betelgeuse. Although Rigel is smaller than Betelgeuse, it is still a super-giant star compared to the sun.

hope this helps ^^

Answer:

Stars as large as Betelgeuse are very unusual. In contrast, Rigel, the bright, bluish-white star at the southwest corner of Orion, is smaller and much hotter than Betelgeuse. Although Rigel is smaller than Betelgeuse, it is still a super giant star compared to the sun

i hope this helps~

what is the next number of the sequence?

0.99, 9.9, 99, 990, ____

Answers

I believe the next number is 9900

Reason: To get the next number in the sequence, move the decimal point

0.99 —> 9.9

9.9 —> 99.

99. —> 990.

990. —> 9900.

Sorry if wrong

Help me I’ll give 50 points helppp!

Answers

Answer:

2 Refraction, Transition/bouncing?

7. Opaque, absorbs

Explanation:

StraightLustre,ShineMirrorTransparency, PropertyNot deep,less fastersee,redoblique ,blockswood,more metals,Board,pen

i need some help on this i dont know can someone plz help me

Answers

Answer:

D is your answer I believe

Why are there more producers than nutrients? (In an ecosystem, more specifically, regarding trophic levels.)

Answers

Explanation:

any step in a nutritive series, or food chain, of an ecosystem dead organisms and waste materials into nutrients usable by the producers

What parts of the body make up the central nervous system

Answers

Answer:

brain and spinal cord

Explanation:

that's it

Does natural selection act on individual or does it act on something else ?

Answers

Answer:

huh

I don't know

Answer:

Yes and no

Explanation:

Natural Selection is the process of organisms adapting to the environment around them so yes individuals are effected through them adapting to the changes and they later pass their good traits to their offspring, and eventually the individuals who don't adapt die off, but the natural selection as a whole is just the process.

Water that falls onto land surfaces is either soaked into the ground or flows downhill into a body of water. The water that soaks into the ground is called groundwater.

Soil and rock that allow this water to pass through them are called ________.
A. aquifers
B. compacted
C. permeable
D. runoff

Answers

Materials that allow water to pass through the are called....

C. Permeable

The capacity of a rock or other substance to let the passage of water is known as permeability, hence option c is correct.

What is groundwater?

Groundwater may readily flow through permeable materials because the pore space is linked throughout the rock or sediment. Mud and clay are examples of materials with great porosity yet very limited permeability.

An aquifer is a water-bearing rock that easily transfers water to wells and springs, the aquifers may be dug into and water pumped out.

Therefore, water that falls onto land surfaces flows into water bodies or it may be soaked in the ground, this water flows through the soil and rock which are permeable, hence option c is correct.

Learn more about rocks, here:

https://brainly.com/question/28175779

#SPJ5

A range of
is basic. *
Between 0 and 6.9
Between 7.1 and 14
7
O 14

Answers

Answer:

7.1 and 14 is basic

Explanation:

0 - 6.9 is acidic.

7 is neutral

14 is basic but its not a range.

7.1 and 14 is the answer

What controls the cell cycle at key checkpoints?
a Regulatory proteins
b Regulatory lipids
C Regulatory carbohydrates

Answers

Answer:

a regulatory proteins

Explanation:

njnjnj

Other Questions
The math clubs car can travel 9 meters in a second. The race track for the soap box derby is 63 meters long. How many seconds will it take the Math clubs car to make it around the track list out the features of a computer. True or false It is legal to pass in Florida when approaching within 100 feet of or traversing any railroad crossing grade croead Pls help!!!!! will give brainly!!!!!Fine art is a kind of art that uses a lot of skill or thought. Do you think digital art could be a kind of fine art? Why or why not? what is importation of expired drugs and foods and their effects Think of one way that life in the 1800s was different from life today. Briefly explain that difference. fasssssst why was Japan's culture able to grow in isolation for so long For a company picnic, Todd fills 30 paper cups with ketchup and Yuki fills 27 paper cups with ketchup. Each paper cup holds 1 ounce. Later, Todd and Yuki learn that two other company employees completed exactly the same taskWrite a numerical expression to find how many ounces of ketchup the four employees prepared. Martin has 13 liters of soda.Each glass can hold of a literof soda. How many glasses canMartin completely fill with soda? A giant tortoise moves at a slow but steady pace. It takesthe giant tortoise 3 seconds to travel 10.5 inches.How many inches will the tortoise travel in 1 second? PLEASE HELP ASAP please someone help me so far my day has sucked and I need help. this is easy math just help meeeee.5/6 +4/5please help me answer correctly my grade depends on it How do you think faith or hope could help us be more resilient? mach each example to the correct figure of speech The scatterplot below shows the relationship between the number of gallons of gasoline in the tanks of 14 cars, and the maximum number of miles the cars can be driven on the given amount of gasoline.GasolineA graph has gallons in gas tank on the x-axis and maximum miles on the y-axis. A line goes through points (9, 280) and (12, 360).Based on the data collected, which combination of gallons in the gas tank and maximum number of miles seems most likely to be possible?I DONT KNOW HOW TO INSERT A PICTURE BUT PLZ HELP will MARK AS BRAINLIST!!!!!!!!!!!!!!!!!!!!!!!!!!!! Can yall plz help me for brainliest PLEASEEEE HELP I HAVE NO IDEA WHAT THIS IS Jordan is driving on a long road trip. He currently has 13 gallons of gas in his car. Each hour that he drives, his car uses up 1.75 gallons of gas. How much gas would be in the tank after driving for 5 hours? How much gas would be left after t hours? A particular inductor is connected to a circuit where it experiences a change in current of 0.8 amps every 0.10 sec. If the inductor has a self-inductance of 2.0 V, what is the inductance NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Anyone help who knows how to do this pls Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additionalOnline Content: Site 1Online Content: Site 2questionsWho was Queen Himiko and why was she important? (Site 1)