Which statement about the structure of DNA is NOT true?

Long strands of DNA are twisted in the form of a double helix.
Long strands of DNA are twisted in the form of a double helix.

DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.
DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.

DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base.
DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base.

DNA consists of two strands joined together by complementary base pairing.

Answers

Answer 1

The answer is DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.

This is because uracil is found in RNA, in DNA it is replaced with thymine.

Related Questions

In Drosophila, the gene for red eyes, R is dominant to the allele for white eyes , r. This is sex-linked . Determine the possible genotype and phenotype ratios expected from a cross between:

Answers

Answer:

B) XRxr XrY

XRXr,XRY,XrXr,XrY

Genotype ratio:1:1:1:1

Phenotype ratio: 2:2 50% white, 50% red

C) XRXR, XrY

XRXr,XRY,XRXr,XRY

Genotype: 2:2

Phenotype: 100% white

D) XRXR,XRY

XRXR,XRXR,XRY,XRY

Genotype: 2:2

Phenotype: 100% white

Giving Brainliets if correct! This is important T^T

Theo made a list of items he saw.
Orchid, water, air, fan, grass, fish
Which statement is correct about the items in the list?

A.Fish, water, and air are created from nonliving matter.
B.The basic functional unit of water, air, and fan is the cell.
C.Orchid, grass, and fish are created from nonliving matter.
D.The basic functional unit of orchid, grass, and fish is the cell.

Answers

D. All of these are living organisms therefor have cells.

Which of the following represents a path that a nerve impulse could travel in the nervous system?

Answers

Answer:

motor neuron-spinal cord- brain

1. A longer depletion-time estimate assumes no recycling or reuse and no increase in reserves.
a. True
b. False

Answers

This should be b. False
The answer is false

In which of the following does the process of natural selection produce change ?

A: individual member of species
B: organisms that reproduce asexually only
C: population of species
D: animal species only

Answers

Answer:

Can confirm it is A

Explanation:

The process of the natural selection produce change occurs when there is the individual member of species.

What is species and natural selection?

It refer to the group of the organism where it should be reproduced in a natural way with one another and also developed the fertilization off-spring.

The organism that does reproduction at a se-xually only, the species population, and the animal species should not change the natural selection.

It is the process via which populations of living organisms should be adapt and change.

Therefore, the option A is correct.

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Write a set of directions for a red blood cell to deliver oxygen to the brain. Lungs heart-brain aorta arteries veins

Answers

Answer: How does oxygen get into the bloodstream? Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.OK Our typical red cell passes from the capillary into the venules, and then into veins. It flows back to the right side of the heart, completing the second loop of its circuit [music out]. As we saw, it then travels back to the lungs.The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.

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Explanation:


According to plate tectonic theory, what happens when two continental plates collide?

Answers

Answer:

its A

Explanation:

Answer:

A

Explanation:

HELP!!!!

What was one of the tests that
Lavoisier performed to prove the Law
of Conservation of Mass?
A. Combined ammonia with salt
B. Burned water
C. Put the fruit into a sealed
container and let it rot
D.Combined fruit with ammonia in
an open container
D.

Answers

D, is the Answer hhfthvvvbh

How many total atoms are represented in the formula CaCO3?

A.
five (5)

B.
six (6)

C.
four (4)

D.
three (3

Answers

Answer:

a

Explanation:

bb

The correct answer is A (5)

Explanation : this is because there is one atom of calcium, one atom of carbon, and three atoms of oxygen.

How do T-cells help with destroying viruses?

Answers

They secrete chemical messages known as cytokines to stimulate the non-specific immune response to continue, to strengthen and to boost appropriate specific responses.

Answer:T-cells are a type of white blood cell that work with macrophages. Unlike macrophages that can attack any invading cell or virus, each T-cell can fight only one type of virus. You might think this means macrophages are stronger than T-cells, but they aren’t. Instead, T-cells are like a special forces unit that fights only one kind of virus that might be attacking your body.The T-cell receptor fits with its antigen like a complex key. When the perfectly shaped virus antigen on an infected cell fits into the Killer T-cell receptor, the T-cell releases perforin and cytotoxins. ... Cytotoxins go directly inside the cell through this pore, destroying it and any viruses inside.

Explanation:

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In a 3 paragraph essay explain how the Venus flytrap's body parts work together in a system to allow it to function.

Answers


The leaves of Venus' Flytrap open wide and on them are short, stiff hairs called trigger or sensitive hairs. When anything touches these hairs enough to bend them, the two lobes of the leaves snap shut trapping whatever is inside. The trap will shut in less than a second. The trap doesn't close all of the way at first.

How does the position of Earth and its orbit affect climate change?

Answers

Answer:

The Earth's orbit around the Sun is an ellipse, but it does change shape. ... At other times, the ellipse is more pronounced so that the Earth moves closer and further away from the Sun as it orbits. When the Earth is closer to the Sun our climate is warmer and this cycle also affects the length of the seasons.

Which of these are NOT true about the first step of protein synthesis? *
A. It occurs in the cytoplasm of a eukaryotic cell
B. It is called transcription
C. It involves making an mRNA copy of the DNA
D. RNA polymerase is the enzyme that makes the mRNA copy

Answers

Answer:

A?

Explanation:

The first step of protein synthesis is transcription, and transcription occurs in the nucleus of the cell... so...

A bird that can easily out complete other birds for its food and that can produce many eggs has high what?

Answers

Answer:

Fitness or aptitude

Explanation:

Aptitude (or fitness) is the genotype/phenotype that results in the survival, fertility, and capability of having a mate. It is a way of measuring the individual ability to leave fertile offspring.

Aptitude puts together everything that matters in natural selection. Includes the survival capability, finding a mate partner possibility, producing fertile descendants, and leaving the genes to the next generation. The aptitude of a genotype must be significant for natural selection to act in its favor.

What color would the bby and water turn with plants in the dark

Answers

Answer:

The water is drawn in the xylem through capillary action and is dispersed through out the entire plant from stem to tips of the leaves and petals. When the water is colored, the color from the water can stain the plant, especially if it is a light colored plant, such as the white petals on our flowers.

Explanation:

A plants ovary helps the plant carry out what function?

Answers

Answer:

Ovary, in botany, enlarged basal portion of the pistil, the female organ of a flower. The ovary contains ovules, which develop into seeds upon fertilization. The ovary itself will mature into a fruit, either dry or fleshy, enclosing the seeds.

Answer:

Image result for A plants ovary helps the plant carry out what function?

Ovary, in botany, enlarged basal portion of the pistil, the female organ of a flower. The ovary contains ovules, which develop into seeds upon fertilization. The ovary itself will mature into a fruit, either dry or fleshy, enclosing the seeds.

When heat is introduced to matter, what happens to the matter at the molecular level?
Explain in science

Answers

Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Explanation:

Which situation contributes most to the development of soil?

A.
migration of animals across land

B.
building up of snow in very cold areas

C.
lava flowing across the ground after volcanic eruptions

D.
breaking down of rock by wind, water, and ice

Answers

The answer is D
Hope this helps

i need help with this please​

Answers

Answer:

12: curly wings  

13: normal wings  

14: normal wings

for the last three the data would look like AA, Aa, aa

Also let me tell you this as a junior in high school this year of science is the easiest thing ever

Explanation:

Punnet square please help it’s an emergency

Answers

Answer:

top left:

      T      T

T    TT    TT

T    TT     TT

1) dominant tall 2) dominant tall 3) dominant tall 4) dominant tall

top right:

    T      t

T   TT    Tt

t    Tt     tt

1) dominant tall 2) mixed hybrid 3) mixed hybrid 4) recessive short

bottom left:

      T     T

T   TT    TT

t    Tt      Tt

1) dominant tall 2) dominant tall 3) mixed hybrid 4) mixed hybrid

bottom right:

      t     t

t     tt    tt

t     tt    tt

1) recessive short 2) recessive short 3)recessive short 4) recessive short

What type of bonds are present in H2O2?

A.
covalent bonds

B.
nonmetallic bonds

C.
metallic bonds

D.
ionic bonds

Answers

A. Covalent Bonds
Hope that helped
A. Is correct answer

Complete the passage about the process of subduction.
The subduction of
boundary often forms volcanoes. This phenomenon occurs because the underground pressure squeezes water out of the dense crust, and this water works its way into the mantle. The water
the mantle and allows for the creation of magma.

Answers

The collision between an oceanic and a continental plate, or two oceanic plates originate volcanoes.  a) oceanic crust at convergent boundary b) heats up.

What are convergent boundaries?

Collision area between two plates. Two continental plates might collide, or two oceanic plates, or one oceanic plate with a continental one.

In the last two cases, the thicker and older plate subduces under the other plate, and magma rises to the surface by crevices.  The Himalayas and Los Andes are examples of these collisions.

Plates' movement might produce earthquakes. Also, collisions create volcanic arches and continental arches.

When one of the plates sinks under the other one, it reaches a depth where it melts and magma rises. Volcanoes get formed on the superior plate since magma flows over it.

The subduction of oceanic crust at convergent boundary often forms volcanoes. This phenomenon occurs because the underground pressure squeezes water out of the dense crust, and this water works its way into the mantle. The water heats up the mantle and allows for the creation of magma.

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Answer:Ocean crust at a convergent / heats up

Explanation:

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Answers

Answer:

The second option: Both alleles are expressed

Explanation:

Codominance is when both alleles are expressed.

Both alleles are expressed, just not at the same time.

What happens when we know about other living beings ?
Please I need it soon

Answers

Answer:

In order for something to be classified as living, it must grow and develop, use energy, reproduce, be made of cells, respond to its environment, and adapt. While many things meet one or more of these criteria, a living thing must meet all of the criteria.

Earliest eon of the earth's history

A. Cenozoic Era
B. Precambrian
C. Trilobite
D. Mesozoic Era

Answers

Answer:

B-Precambrian is the earliest part of earth's history

Which will occur when two organisms in the same habitat occupy the same niche?

A.competition

B.mutation

C.geographic isolation

D.symbiosis

Answers

Answer:

abcdefs

Explanation:

What is the most likely reason that horses and mountain goats have hooves?


They have homologous structures because they have a common ancestor.


They have analogous structures because they have a common ancestor.


These are vestigial structures in both animals because they are not used.


These are similar structures due genetic mutations.





What is the answer to this?

Answers

Answer:

They have homologous structures because they have a common ancestor.

homologous structures because they have a common ancestor is the most likely reason that horses and mountain goats have hooves.

what is homologous structure ?

Homologous structures shoe the same structure, but may have a distinct  function, it indicate a common ancestor.

A homologous structure is an organ or bone seen  common between different animals that demonstrates an anatomical commonality indicating that the animals share a common ancestor.

on the other hand analogous structures where two unrelated species have structures with similar forms or functions due to convergent evolution.

for example of a homologous structure is the wing of a bird and an insect.

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what are the effects of sunlight on the aquatic life inhabiting amazon river

Answers

Answer:

the effects of sunlight on the aquatic life inhabiting the Amazon River. The center of all aquatic life in the Amazon is located in The Amazon Basin, the sun makes sure that all fish and plant life can sustain life.

The sunlight affects the aquatic species that lives in the Amazon River. The Amazon Basin is the epicenter of all aquatic life in the Amazon, where the sun ensures that all fish and plant life may survive.

What is Amazon Basin?

The region of South America that the Amazon River and its tributaries drain is known as the Amazon basin. Approximately 6,300,000 km2, or 35.5 percent of South America, is covered by the Amazon river basin.

The Amazon basin not only contains the world's largest remaining tropical rainforest, it also harbours at least 10% of the known biodiversity, including endemic and threatened species of plants and animals, and its river contributes 15–16% of all river flow into the oceans.

The aquatic animals that inhabit the Amazon River are impacted by sunlight. All aquatic life in the Amazon is concentrated in the Amazon Basin, where the sun ensures the survival of all fish and plant life.

Thus, this is the chief effect of sunlight on the aquatic life inhabiting amazon river.

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Name 4 examples of national government departments​

Answers

Answer:

Ministry of climate change, Ministry of Commerce and Textile Industry, Ministry of Communications and Ministry of Defense

Explanation:

Ministry of climate change, Ministry of Commerce and Textile Industry, Ministry of Communications and Ministry of Defense are the four departments of national government. Every department has their own functions and responsibilities which is done by the officials of that departments. These departments has a great role in running of the government efficiently.

solve those fast 2412412

Answers

The first one is Stroke

The second one is High Blood Pressure
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