1.) Which of the following is not true of negatively supercoiled DNA?

A. Eases the separation of nucleotide strands during replication and transcription.

B. Allows DNA to be packed into small spaces.

C. Has less than 10 bp per turn of its helix.

D. Is more negatively charged due to additional phosphates per turn of the helix.

E. Is found in most cells.

2.)How many complete rotations would most likely correspond to a positively supercoiled DNA molecule that is 100 bp in length?

A.) 0

B.) 5

C.) 10

D.) 15

E.) 100

Answers

Answer 1

Answer:

1.

C. Has less than 10 bp per turn of its helix.

2.

D.) 15

Explanation:

Negatively supercoiled DNA

(deoxyribonucliec acid) is the twisting against the helical conformation which is a twist in a left handed direction that loose and straightens the helix at low twisting stress, and knot the DNA into negative supercoils at high twisting stress.

Supercoiling will occur where the DNA helix must uncoiled for the function of a macromolecular assembly.

Supercoiling allows DNA to be packed into small spaces, It allows for more negative charge and can be found in many cells. But it does not have less than 10 bp per turn of its helix.

15 rotations will correspond positively supercoiled dna molecule of 100base pair.


Related Questions

40 points and brainliest.

Answers

Hey There!_____________________________________Answer:

1- Fire uses the energy, The heat is required, it is the part of the chemical reaction. Heat reacts with the fuel and oxygen to ignite it.

2- Bacteria as the decomposers gets rid of the wastes. It breaks down the organic material such as the remains of dead organisms.

3- Fire grows and develops, The fire has different stages. If its not controlled in its initial stages it could grow and develop into really big destruction.

4- Bacteria can sense and respond to stimuli. There is phototactic and chemotactic movement found in bacteria.

5- Bacteria has ways to protect itself from har.sh environment. They can form colony and work together against the changes, also they can form the hard cyst to protect themselves from the unfavorable conditions.

6- Bacteria reproduces, It has different ways of reproduction i.e. Trans.duction, Transf.ormation, conju.gation.

7- Wrist.watch have a def.ined boun.dary as it is not a living thing it can't gr.ow, it does not have 8 chara.cteristics of li.fe.

8- Wrist.watch has internal organization which help them to carry out basic functions

9- Algae are made of more than one cells

_____________________________________Best Regards,'Borz'

Answer:

thxs

Explanation:

A student is asked to build a model of an atom with 6 protons and 6 electrons. The student is then asked to make an identical model of the same atom but make it an
ion. To be successful in this project, the student will:
Put the electrons in the middle of the model and distribute the electrons around the protons. The ion will have seven protons.
Put six protons in the center of the atom and distribute the electrons around the protons. The ion will look the same but have seven or five electrons.
Put six protons in the center of the model, and six electrons around the outside, then add one electron or take away one electron to make an ion.
Place electrons and protons in the center of the atom and create an ion by adding one more proton and one more electron to the center of the atom.

Answers

Answer:

.....

Explanation:

Timed! What is true about the off spring of yeast? (Picture shown)

Answers

the answer to that question is b! :)

What does this experiment demonstrate about the movement of water across a cell membrane?
UJ
more
A. If a cell is placed in a solution that has a lower concentration of solutes than the concentration inside the cell,
solutes will move out of the cell
B. If a cell is placed in a solution that has a higher concentration of solutes than the concentration inside the cell,
water will move into the cell
C. If a cell is placed in a solution that has a higher concentration of solutes than the concentration inside the cell,
water does not enter or leave the cell
D. If a cell is placed in a solution that has a higher concentration of solutes than the concentration inside the cell,
water will move out of the cell

Answers

Answer:smosis is the diffusion of water across a semi-permeable (or differentially permeable or selectively permeable) membrane.

Explanation:

During which phase of the cell cycle does the cell prepare for mitosis?

A. the first growth phase
B. the synthesis phase
C.the second growth phase
D the mitotic phase

Answers

Answer:

The second growth phase

Explanation:

i did the quiz

A patient visits your office and complains of constipation. They drink 8 glasses of water a day and they eat the proper amount of fiber that should cause them
to defecate normally. However, they have a difficult time having bowel movements. What is wrong with their digestive system? Explain.

Answers

Explanation:

In my view a patient didn't used to do exercise. He/she may have eaten oily and spicy food. He/she may have eaten a lot fodd

what macromolecule can be found in a virus ?

Answers

Answer:

HOPE IT HELPS -

Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. The simplest viruses contain only enough RNA or DNA to encode four proteins

To explain the decrease in mass of the dark-grown plants, identify the overall chemical reaction that is occuring in the plant cells and connect it to the cellular process underlying the decrease in mass.

Answers

Answer:

The correct answer is - cellular respiration.

Explanation:

In the provided data the decrease in the dry mass of the plant occurs due to cellular respiration which is performed in absence of light or plants kept in dark places that did not allow the plant to perform photosynthesis.

Even though there is no production of glucose still need to perform cellular respiration for the energy required to perform cellular functions. This causes the mass of the plants kept in dark is reducing.

Cellular Respiration is defined as the metabolic pathway, which breakdowns glucose to yield ATP. The correct answer is cellular respiration.

The data given indicates the decrease in the dry mass of the plant. It is due to the cellular respiration that is performed in the absence of light. The plants are kept in dark to avoid photosynthesis. Photosynthesis is the process through which plants prepare their food and get energy. Plants store the excess energy in the form of starch.

Although, the plants require energy to survive. The following points can explain the decrease in mass of the plant:

The plants require energy to live and survive, which is provided by cellular respiration. The absence of photosynthesis will lead to no formation of sugars. Thus, the stored energy will be utilized to obtain energy.

Therefore, the mass of the plants is kept reducing due to cellular respiration and lack of photosynthesis.

To know more about cellular respiration, refer to the following link:

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High pressure areas are created around the poles as cold air

A. Rises
B. Blows
C. Stagnates
D. Sinks

Answers

Answer:

Sinks is the answer hope it helps

Answer: sinks

Explanation: hope it helps

Fluctuations in the phosphorus cycle in aquatic ecosystems____

Answers

Answer:

A ^^

Explanation:

Fluctuations in the phosphorus cycle in aquatic ecosystems a. can lead to changes in the growth rates of aquatic populations The increase in phosporus amount in the aquatic ecosystem will increase the amount of algae within that ecosystem. When the amount of algae is increased, the aquatic organisms will have a LOT of food source which will increase the growth rate within their population.

Betty made a simple electromagnet using just a battery and a wire. What could Betty do to increase the strength of her electromagnet?

options:

Coil the wire around a test tube.

Coil the wire around a toothbrush

Coil the wire around a paper towel roll.

Coil the wire around a nail.

Answers

Answer:
Coil the wire around a nail

Explanation:
Nail is a metal which can conduct electric

Help I’ll give brainliest :,(


Why is Palmyra a perfect place to study how a marine ecosystem responds to climate change?

Answers

Answer:

because it has little human influence from things like pollution or overfishing.

Explanation:

According to the Punnett square, offspring from these two parents have a ____________ chance of inheriting one B allele and one b allele. Individuals that inherit these two alleles are ____________ for the B gene. Inheriting Bb confers the ____________ of brown eyes.

Answers

Answer:

Explanation:

50%, heterozygous, phenotype

Will give brainlest and heart if correct

Answers

Answer:

G1, S and G2

Explanation:

Idek, I needed more characters

Answer:

The answer is A, G1, S, G2 and the mitotic phase.

Explanation:

Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.

LABEL THE DIAGRAM OF THE LEAF

Answers

Answer:

1.waxy cuticle

2.upper epidermis

3.palisode mesophyll

4.spongy mesophyll

5.Lower epidermis

6.Guard cell

7.stomo

8.phloem

9.vascular bundle

10.xylem

is your answer may it helps you frnd

Answer:

1.waxy cuticle

2.upper epidermis

3.palisode mesophyll

4.spongy mesophyll

5.Lower epidermis

6.Guard cell

7.stomo

8.phloem

9.vascular bundle

10.xylem

Explanation:

Identify the number of the organelle in the diagram that is called powerhouse of cell

Answers

Answer:

A mitochondrion is a round to oval-shaped organelle found in the cells of almost all eukaryotic organisms. It produces energy, known as ATP, for the cell through a series of chemical reactions

The big bang produced an imprint of leftover heat called _____.

Answers

Answer:

The big bang produced an imprint of leftover heat called CMB radiation

Explanation:

CMD is short for Cosmic Microwave Background

Answer:

13 billion years ago. The big bang produced an imprint of leftover heat called. CMB radiation. ... Because CMB radiation was  throughout the universe, scientists can only relate the source to the big bang.

Explanation:

HOPE IT HELPS :)

In adults, the lung does not normally grow larger or regenerate cells.
Based on this knowledge, most adult lung cells would be expected to:

Answers

Answer:

Based on a simple inference, it could be anything but eh:

Adault lung cells would be expected to deteriroate over time at they do not have the ability to regenerate or heal themselves.

HELP!! ASAP PLEASE!
Which of the following is characteristic of all birds?
endothermic
aquatic
invertebrate
autotrophic

Answers

Answer:

endothermic is the right answer

Answer:

Endothermic

Explanation:

Process of elimination

Hope that helps have a lovely night!

Which of the following describes an example of a protozoa?
Red Algae causing red tide
Ciliate organism causing diarrhea
Giant kelp causing huge ocean forests
Water mold causing destruction of crops

Answers

Answer:

Giant kelp causing huge ocean forests

Explanation:

Even though they look like very tall ocean grass that covers the floor and looks stunning it is actually not a plant. It is instead a brown alga and is part of the huge kingdom of life known as Protista. Even though most protozoa are single-celled giant kelp is not. It is a large and complex organism and is the largest protist in the world that we know of.

Answer:

2

Explanation:

The ability of the heart and lungs to efficiently deliver oxygen and nutrients to the body’s muscles and cells via the blood stream is called _________

Answers

Answer:

Target Heart Rate is what it called

List three activities of a cell that help it live

Answers

Answer:

1. The use of ATP, also known as the enegy currency of the cell. Cellular functions need ATP to survive.

2. Cell division. Cells need to reproduce for repairing tisues, healing, and more.

3. Active and passive transport. This is important to control what gets in and out of the cell. The selectively permeable membrane is responsible for this process.

Hope this helps! :)

Metabolism, respiration, and reproduction are essential activities that help a cell to live and carry out its functions.

What help cells live?

Cells have several mechanisms that help them live and carry out their functions. Metabolism, which involves the chemical reactions that occur within a cell, provides the energy and raw materials necessary for life processes. Respiration, the process of converting glucose and oxygen into ATP, also provides energy for the cell.

Cells also have various organelles, such as mitochondria, lysosomes, and ribosomes, that perform specific functions, including energy production, waste removal, and protein synthesis. Additionally, cells have the ability to respond to their environment, adapt to changing conditions, and reproduce to maintain their population.

Furthermore, the genetic material in cells provides instructions for all cellular processes and plays a critical role in the development and maintenance of an organism. In summary, cells have several mechanisms and processes that help them live, function, and contribute to the overall health and survival of the organism.

Learn more about cells, here:

https://brainly.com/question/27766915

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How much will atmosphere carbon change in one year

Answers

Answer:

Around 0.6 +/- 0.1 ppm per year.

Explanation:

There could be an increase from the past years.

Yasmine states that tapeworms are common parasites of goats. Walter claims that the relationship between a tapeworm and goat should be classified as predator and prey. Which fact about tapeworms and goats is MOST useful for Yasmine to cite to refute Walter's claim? A. Tapeworms get their energy from food that they obtain from goats. B. Tapeworms benefit from their relationship with goats. C. Goats do not benefit from their relationship with tapeworms. D. Tapeworms live inside a goat's body in a close relationship with the goat.

Answers

Answer
A
Explanation

Answer:

Tapeworms live inside a goat's body in a close relationship with the goat.

Explanation:

just took the test

please give the brainiest to me because I am right

What is the role of enzymes primase in the DNA replication?



A. Primase relaxes the DNA double helix so that other enzymes can reach the DNA.

B. Primase initializes replication by building short RNA primer complementary to the template.

C. Primase seals any gaps between Okazaki fragments or Fragments of DNA.

D. Primase is the enzyme that connects the ribosome to the DNA.

Answers

Answer:

primase relaxes the DNA double heliz so that other enzymes can reach the DNA

Explanation:

Answer:

A,

Explanation:

6. Which is younger, the intrusion or rock layer C? How do you know?

Answers

Answer:

its the intrusion

Explanation:

what major organs is involved with hyperopia disease?

Answers

Answer:

Nonskeletal involvement can include cleft lip/palate as well as anomalies of major organs such as the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia.

Explanation:

Answer:

The cornea, the clear outer layer of your eye, and the lens focus images directly on the surface of your retina, which lines the back of your eye. If your eye is too short, or the power to focus is too weak, the image will go to the wrong place, behind your retina. That's what makes things look blurry.

Discuss how humans have influenced the pace of evolution. Give specific examples to support your discussion.

Answers

Answer:

Numerous examples of this human-induced contemporary evolution have been reported in a number of 'contexts', including hunting, harvesting, fishing, agriculture, medicine, climate change, pollution, eutrophication, urbanization, habitat fragmentation, biological invasions and emerging/disappearing diseases.

Clear selection
5. Which term correctly identifies the-alternative energy source in which 20 points
flowing water spins turbines that are connected to generators?
A solar energy
B. biofuel energy
C. geothermal energy
O D. hydroelectric energy
Clear selection
Send me a copy of my responses.

Answers

Answer:

D

Explanation:

W A T E R

Just like land animals marine fish breathe oxygen. they do so by directing a flow of ocean water over their gills. what can you conclude from this information?

Answers

Answer:

They can breathe in oxygen.

Explanation:

By letting it flow over there gills it helps them make oxygen.

Conclusion from this information is:-

Like land animals Marine animals also need oxygen to breathe.For this purpose they have a specialized organ called gills.They direct the flow of ocean water over gills and take oxygen from it

What are Gills?

is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide.

How gills extract oxygen from water?

Gills contain many filaments, each with thousands of tiny folds called lamellae, which greatly increase the surface area that comes into contact with water. Dissolved oxygen in seawater passes through thin membranes in the lamellae and enters the fish's blood, and carbon dioxide is eliminated.

To know more about gills here

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