DNA is shaped like a twisted ladder. What do we call this shape/structure? pick the the correct answer.

1.Single Strand,
2. Double Strand,
3.Double Helix,
4. Chromosome,​

Answers

Answer 1

Answer:

The answer is 3. Double Helix.

Answer 2

Answer:

3

Explanation:

:))))))


Related Questions

Describe the difference in pressure against your cheeks when they are full of air versus When You released it

Answers

Answer: When they were full of air, then the Pressure was the Highest 'cause of the larger force under the specified area as compared to when we released it. We decreased the area of our cheek, so pressure increased and air flows from the cheek (area of high pressure) to the atmosphere

Explanation:

100 points!!! please help

Answers

Answer:

You can buy a nutrient solution over the counter, or take some water from a fish tank or pond to supply nutrients. Using water from a pond or fish tank could introduce other contaminants into the growth medium. You can also mix nutrient solutions. The Walne medium is a nutrient mixture that is suitable for most algae

Explanation:

does that hep

Answer: Look it up on quilt

Explanation:

I had that paper

Which term describes all plantlike protists?
A.Heterotrophic
B.Parasitic
C.Prokaryotic
D.Autotrophic

Answers

D.Autotrophic.....lolololo

using the data you collected , hypothesize what a cladogram would look like for the organisma in Data table 1, assuming the trout is on the first and lowest branch.

Answers

Answer:

assuming the trout is on the first and lowest branch

The heart valve at the entrance to the aorta is the _________ valve.
bicuspid mitral
aortic semimitral
pulmonary semilunar
aortic semilunar
tricuspid

Answers

Answer:

tricuspid valve would be the entrance to the heart

Which of the following best explains how viruses replicate?

Answers

Answer:During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it. During uncoating, replication, and assembly, the viral DNA or RNA incorporates itself into the host cell's genetic material and induces it to replicate the viral genome.

Explanation:

Virus replication is the formation of biological viruses during the infection process in the target host cells. Viruses must first get into the cell before their replication can occur.

What do you mean by Viruses?

Viruses may be defined as infectious microbes consisting of an element of nucleic acid surrounded by a protein coat.

There are six steps that govern the replication of a virus. They are given below:

Adsorption or attachment: This step attaches the virus particle to the plasma membrane of the host cell. Penetration: It is done by receptor-mediated endocytosis and the virus now enters into the cytoplasm of the cell.Uncoating: This step breaks the whole structure of the virus particle and allows its genetic material to reach inside the nucleus of the host cell.Viral Genome replication: This is done in the nucleus of the host cell.Maturation: It involves the growth of replicated virus particles.Release: It allows the replicated virus particle to move outside the host cell by bursting it.

Therefore, it is well described above.

To learn more about Virus replication, refer to the link:

https://brainly.com/question/15391411

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New forms of drug-resistant bacteria can evolve quickly because

Answers

Answer:

The correct answer is - when a drug kills most of the bacteria, the ones left to breed are those that have a natural resistance to the drug.

Explanation:

When a drug or antibacterial medication used on the colony of a bacteria, the drug kills most of the specific bacteria from the host or culture, however, some bacteria remain to breed the next generation of bacteria as they had resistance to the particular drug.

The left bacteria breed and produce more resistant bacteria and after a few generations, a new form of drug-resistant bacteria develops. This follows the natural selection process and adapting the beneficial characteristic.

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Answers

Answer:

Its the 3 one

Answer:

I'm pretty sure the answer is that they are in the same biological classification

Explanation:

this is the answer because they evolved from a common ancestor.

Three examples of traits that can be BOTH genetic and non-genetic. For example, having a sense of humor- you can inherit it, or you can learn it, so it's both. I need three other examples. Cannot include height or how fast someone can run.

Answers

Explanation:

ሠሁነሁጋነነሃዐሠዐቻነዘሀቻዐሀነጕñነነጌዕሃነጋዕሀዕ

Answer:

Sense of fashion\style, maybe music or artistic taste and preferences in food

Explanation: These are just my ideas but if you don't want to use them then that's fine.

Areas of Earth that absorb more carbon dioxide than they release

Answers

Answer:

When carbon dioxide CO2 is realised into the atmosphere from the burning of fossil fuel, approximately 50% remains in the atmosphere, while 25% is absorbed by land plants and trees, and 25% other is absorbed into the areas of the ocean.

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Answers

Answer:

B. Evidence from rock layers, fossils, and ice cores.

Explanation:

Right i believe

Answer:

Its the 4th one. I think. Its the 2nd or third but can't tell for sure. When I searched it, the result came as followed: "Plate tectonics shift the continents, raise mountains and move the ocean floor." So yeah. Hope this somewhat helps.

Explanation:

name the form of nitrogen which higher plants use​

Answers

Answer:

Nitrate

Nitrate is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins. This form is not lost as easily from the soil.

Explanation:

I WILL GIVE BRAINLIEST!!!

What is a unique factor seen in interphase between meiosis 1 and meiosis 2.

A:the S phase of DNA replication

B:interphase is twice as long a regular interphase

C:interphase is shortened or missing

D:the G1 and G2 stages are expanded to create multiple cells

Answers

Answer:

I think it is c

Explanation:

I searched it lol

HEY!!! PLEASE HELP ME I WILL GIVE BRAINLEST!!!
Which of the following processes is NOT a way that carbon could move between the atmosphere and the biosphere?

Question 4 options:

respiration (breathing)


combustion (burning)


deep burial, compaction, and cementation


photosynthesis

Question 5 (2 points)
What is the only natural way that carbon can move OUT of the geosphere?

Question 5 options:

burning of fossil fuels


volcanic eruptions


dissolution


decomposition

Question 6 (1 point)
Which carbon reservoir contains the MOST carbon?

Question 6 options:

fossil fuels


atmosphere


land biomass


rocks

Question 7 (2 points)
Which carbon reservoir changes the quickest and has the biggest direct effect on climate?

Question 7 options:

land biomass


ocean


atmosphere


rocks

Question 8 (2 points)
Which best describes the process of ocean acidification?

Question 8 options:

The ocean absorbs more human-produced CO2, causing the acidity to increase


The ocean releases more human-produced CO2, causing the acidity to decrease


The ocean absorbs more natural CO2, causing the acidity to decrease


The ocean receives more polluted runoff, causing the acidity to increase

Question 9 (2 points)
What is a potential impact of ocean acidification?

Question 9 options:

Animals will have a harder time building their shells


Corals may have a harder time building their skeletons


Ocean ecosystems may suffer, making it harder for humans to get food from the ocean


All of the above

Answers

Answer:

4) photosynthesis

5) volcanic eruptions

6) fossil fuels

7) ocean

8) The ocean absorbs more natural CO2, causing the acidity to decrease

9) All of the above

what is natural selection?

Answers

Answer:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

A different couple has a child with O type blood who has a blood disorder and
needs regular transfusions. The mother is type B, and the father is type A. A
genetic counselor created a punnett square to show them the chance of having
another child with type O blood. The results are shown below:
What is the chance of the couple producing another child with type O blood? __%

Answers

Answer:

25%

Explanation:

A simple way to think of the punnett square is to think of it as divided into fourths. Only one of these fourths has o type blood. Therefore, there is only a 1/4 or 25% chance of them having another child with o type blood. Hope this helps :)

How will planting genetically modified crops affect chemical use on farms?

Increase chemical use

Decrease chemical use

No change to chemical use

No answer text provided.

Answers

The correct answer is

B. Decrease chemical use

How is semen produced

Answers

The seminal vesicles and prostate gland make a whitish fluid called seminal fluid, which mixes with sperm to form semen when a male is sexually stimulated. The penis, which usually hangs limp, becomes hard when a male is sexually excited. That that

Answer:

the seman arrive first at the ampulla just above the prostate gland, from the seminal vesticles located next to the ampulla are added. the seminal fluid is then propelled forward through ejaculatory ducts toward the uethra. as it passes through the prostate gland a milky fluid is added

Explanation:

7. Challenge yourself: You have already learned that mutation is one source of
variation in a population. Based on what you have just seen, what is a second
source of variation?
(I just need more information or explanation) please

Answers

Answer:

Natural selection would be the other source because organisms that have a beneficial trait will live, but organisms that do not have a beneficial trait might die. So the organsims that do survive will reproduce and pass on those traits to their offspring. Eventually all the organisms that do not have a beneficial trait will die out, leaving most of the population having that beneficial trait.

Most of the functions of a cell membrane are performed by
a. proteins.
b. cholesterols.
c. phospholipids.
d.carbohydrates.

Answers

Answer:

Pretty sure the answer is, A.) Proteins

Explanation:

Mention two important roles for hydrochloric acid in the stomach.

Answers

One to break down the. Food more bc acid is so strong it can’t digest fully if it’s just ur mouth breaking it down and the other one is to I have no idea but good luck

Answer: 1.)The gastric juice

             2.) The  acidic gastric

Explaining: The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria. The mucus covers the stomach wall with a protective coating.

Hope this helps. :)

All animals need food, water, shelter, and space to live. which of these is difficult to find in a grassland habitat?

Answers

I’d guess shelter considering it’s mostly flatland

According to the scenario, it is difficult to find shelter in a grassland habitat. This is because grassland habitat generally consists of small grasses with a lack of space between them.

What is Habitat?

Habitat may be defined as a type of natural environment for which a particular species is best adapted due to natural selection. It may also be characterized as the area where the basic demands of an organism are fulfilled like food, water, space, mating partner, etc.

Grasslands habitats are generally open and continuous, fairly flat areas of grass. They are often located between temperate forests at high latitudes and deserts at subtropical latitudes. In these habitats, the availability of shelter is very low because of an abundance of small grasses across the area which is insufficient to build a shelter.

Therefore, it is difficult to find shelter in a grassland habitat. This is because grassland habitat generally consists of small grasses with a lack of space between them.

To learn more about Habitats, refer to the link:

https://brainly.com/question/23780904

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define specialization in animals cells

Answers

animal cell specialization would be specific types of cells that have particular shapes or features that carry out specific tasks in the animal. (blood cells are shaped like donuts or saucers and make up the blood in animals)

Argentine ants are invasive ants found in California. They’re aggressive in nature and have a tendency to protect crop pests. In urban areas, Argentine ants don’t have many predators. Argentine ants and the native ant species were observed competing for nutrients in a particular ecosystem. What is a likely outcome of this competition? A. an increased number of Argentine ants B. an increased number of native ants C. no dependence between the populations of the two ant species D. an equal number of Argentine and native ants

Answers

C no dependence between the populations de pendency

Answer:

The answer is C.

Explanation:

No dependence between the populations of the two ant species.

Which describes the moth population after the industrial Revolution?

Answers

I am not 100% sure but I believe that because of increased manufacturing, the air got very polluted and this made many trees darker, like birch. So moths are usually lighter in color so many couldn’t really hide among trees and they were eaten. After some time, many moths mutated and also became darker to blend in when they were on trees to prevent being eaten by predators. In conclusion, the population decreased.
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The trait for hemophilia is sex-linked (on the X chromosome) and recessive. If a female who
is a carrier of hemophilia (XHXh) mates with a man with normal blood (XHY):What are the
chances of their daughters having hemophilia? What are the chances of their sons having
hemophilia?

Answers

If the mother is a carrier and the father is normal, the outcomes for potential children would be:

XH Xh
XH XHXH XHXh
Y XHY XhY

So let’s break these down
XHXH = will be a daughter (XX) with normal blood (HH)
XHXh = will be a daughter (XX) who is a carrier for hemophilia (Hh)
XHY = will be a son (XY) with normal blood (H)
XhY = will be a son (XY) with hemophilia (h)

Because this disease is inherited on the X chromosome, male offspring tend to either have it or not. They can’t be carriers because they only have one X chromosome. So the chances of having a son with hemophilia will be 50% cause the boys have a 50% chance of inheriting hemophilia.

On the other hand, daughters will either have normal blood or be carriers in this situation. So to answer the question, the chance a daughter of this couple would have of inheriting hemophilia is 0%. This only changes if their father has hemophilia. Then they will either be a carrier or will have hemophilia.

What are two types of evidence that have helped biologists determine the ancestors of modern humans

Answers

Answer:

The evolution of modern humans consisted of fossils, direct observation, anatomy, and molecular biology.

45 POINTS + BRAINLIEST IF CORRECT!!!
A fever is a response to which stimulus?

A) fear?
B) hunger?
C) illness?
D) tiredness?
HURRY PLZ

Answers

Answer:

there ya go

Explanation:

is chromatin stored within chromosomes​

Answers

Answer:

Explanation:

Chromatin is the material that makes up a chromosome that consists of DNA and protein. The major proteins in chromatin are proteins called histones. They act as packaging elements for the DNA.

What happens when cells do not
respond to the signals that
normally regulate their growth?

Answers

Answer:

Such cells, called cancer cells, divide uncontrollably and form masses of cells called tumors that can damage the surrounding tissues. ... Normal cells respond by not growing.

Answer:

Cancer cells do not respond to the signals that regulate the growth of most cells... What happens when cells do not respond to the signals that normally regulate their growth? Such cells, called cancer cells, divide uncontrollably and form masses of cells called tumors that can damage the surrounding tissues.

Hope this helps!!!

Have a great day!!! :)

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