what was the key factor that allowed Hershey and Chase to show that DNA alone carried the genetic information of a bacteriophage?

Answers

Answer 1

Explanation:

DNA contains phosphorus, but protein does not. Protein contains sulfur, but DNA does not. This allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.

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[tex] \mathfrak \fcolorbox{green}{red}{BE \: BRAINLY }[/tex]

Answer 2

In the DNA  structure there is phosphorus present while protein does not contain phosphorus but it contains sulfur while DNA does not which allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.

What is Hershey and Chase experiment?

Hershey-Chase experiment was the final experiment which is also called as the Waring Blender experiment. In this experiment, they showed that phages only injected their DNA into host bacteria, and that the DNA served as the replicating genetic element of phages.

They used this experiment to prove that DNA is the genetic material. [tex]T_2[/tex] Bacteriophage that was grown in isotopic medium radioactively labels a specific viral component. Two types of isotopic media were used.

Viruses that were grown in radioactive sulfur (35S) contained radiolabeled proteins.Viruses grown in radioactive phosphorus (32P) had radiolabeled DNA

Next, the virus was allowed to infect a bacterium (E. coli) and the virus and bacteria were then separated through centrifugation. After centrifugation, the larger bacteria formed a solid pellet, while the smaller viruses remained in the supernatant. The pellet of bacteria was found to be radioactive when infected with 32P-virus (DNA), but not with 35S-virus (protein).

This provided proof that DNA was the genetic material because DNA had been transcribed into bacteria, not proteins.

Thus, in the DNA  structure there is phosphorus present while protein does not contain phosphorus but it contains sulfur while DNA does not which allowed radioactive phosphorus and radioactive sulfur to identity each molecule specifically.

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Related Questions

Explain the carbon circle in 5 sentences

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Answer:Carbon moves from the atmosphere to plants.

Carbon moves from plants to animals.

Carbon moves from plants and animals to soils.

Carbon moves from living things to the atmosphere.

Carbon moves from fossil fuels to the atmosphere when fuels are burned.

Carbon moves from the atmosphere to the oceans.

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In a cohort study of a group of people born in a certain year, what characteristic is used from the cohort. A. age B. occupation C. behavior D. geography

Answers

Answer:

D.

Explanation:

what would happen if cells with mutated dna replicated

Answers

Answer: Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division.

Explanation: If they replicated than the entire thing would copy that and would be permanent.

what are the different variations of genes called?

Answers

Answer: Different versions of a gene are called alleles.

Describe how the chemical energy in ATP is converted into electric potential energy

Answers

Answer:

espero ter ajudado boa noite

Explanation:

Descreva como a energia química em ATP é convertida em energia potencial elétrica

which muscles are also known as the smooth muscles

Answers

Answer:

involuntary muscle

Explanation:

Involuntary muscles are those that cannot be controlled by will or consciousness and are frequently associated with organs that contract and relax slowly and regularly. Because there are no striations when viewed under a microscope, involuntary muscles are also known as smooth muscles or non-striated muscles.

Which process occurs at location W? precipitation evaporation condensation transpiration.

Answers

Answer:

Precipitation

Explanation:

If it's the graph that I am thinking of, then it is precipitation. This is where raining occurs in he picture.

The biogeochemical cycle where the water circulates from the atmosphere to the Earth surface in a continuous motion is called the water or hydrological cycle.

The process that occurs at location W is:

Option A. Precipitation

The water cycle can be explained as:

The water cycle has four main components that are evaporation. condensation, precipitation and runoff.

When an atmospheric substance falls on the ground in the form of rain, snow hails etc. are called precipitation.

When the water from surfaces turns into vapours and moves upwards in the atmosphere is called evaporation.

The vapours in clouds turn into water droplets ready to fall as rain or snow is called condensation.

Transpiration is a plant function in which surplus water is exhaled from the stomata of the leaf.

Therefore, the water cycle shows precipitation.

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For the question we've all been waiting for: Did the chicken or the egg come first?

Answers

Answer:

had to have been something mutated into a chicken right?

WILL GIVE BRAINLIEST IF CORRECT! I NEED HELP

Answers

Unconformities is number 4
principles of originally horizontally is number 3
law of superstition is number 2
principles of cross-cutting relationships is number 1

when preparing pure cultures, dilution is necessary for

Answers

Dilution is necessary during pure culture preparation to reduce the bacterial load and allow readable colonies to grow.

Dilution of bacteria culture is carried out in comparison to McCfarlan standard so as to have a decent number of bacteria that will not be too numerous or too little to observe the growth of distinct colonies during culture preparation.

Without dilution, colonies may form but may be too numerous to count. Too much dilution may also lead to no growth in the culture plates.

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Primate evolution and behavior, such as hunting skills, have been directed in part by the development of depth perception. What anatomical change in primates from other animals made depth perception possible

Answers

maybe changing the gas that we use that makes the air bad and stop hunt and maybe try natural foods instead of hurting the animals

FOR 100 BRAINLZY POINTS I NEED IT NOW What marks the transition between the Precambrian Eon and Phanerozoic Eon?

Question 3 options:

increased meteor impacts


a disappearance of most of the life in the fossil record


an increase in the number and diversity of life in the fossil record


the appearance of land plants in the fossil record

Answers

Answer:

Explanation:

Mesozoic Era, second of Earth’s three major geologic eras of Phanerozoic time. Its name is derived from the Greek term for “middle life.” The Mesozoic Era began 252.2 million years ago, following the conclusion of the Paleozoic Era, and ended 66 million years ago, at the dawn of the Cenozoic Era. (See the geologic time scale.) The major divisions of the Mesozoic Era are, from oldest to youngest, the Triassic Period, the Jurassic Period, and the Cretaceous Period. The ancestors of major plant and animal groups that exist today first appeared during the Mesozoic, but this era is best known as the time of the dinosaurs.

Answer:

oh that's my answer sorry belated answer

what are the two functional parts of a tRNA

Answers

Answer: Transfer RNAs are coded by a number of genes, and are usually short molecules, between 70-90 nucleotides (5 nm) in length. The two most important parts of a tRNA are its anticodon and the terminal 3’ hydroxyl group, which can form an ester linkage with an amino acid.

Explanation:

there are many kinds of organisms in kingdom protista. which organism is in kingdom protista?

Answers

Protist contains eukaryotic organisms wIth unicellular and simple multicellular organisms. These are mostly aquatic. This kingdom contains diverse group of organisms Eg: Animal like protist called protozoa i.e amoeba, Plant like protists called algae i.e euglena, and fungi like protists i.e slime molds

What is the difference between weathering and erosion? (Site 1).

Answers

Answer:

Weathering and erosion are natural geological processes that act like rocks and soil on the earth's surface, moving and reshaping the earth. Weathering is the breaking down of rocks into smaller pieces by changing the size and structure of the rocks. The forces of nature are largely responsible for this process. Erosion involves processes such as wind, water flow, and ice movement, which results in change from one place to another.

what is the answer to 2 x?=2

Answers

Answer:

2x=2

/2 both sides

x=1

Brainliest plz

Answer:

X=1

Explanation:

2x=2 or 2 times x equals 2 means x times 2 will give you 2 which is the only number 1 because anything times 1 is that number so 2(1)=2 or x=1

can someone pls help ill mark u the brainlest and no LINKS!!

Answers

Answer:

yeah ill help

Explanation:

How are the nervous systems of a flatworm and a fish different?


One has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.


One has nerve cells with axons and the other does not.


One responds to stimuli in the environment and the other does not.


One is a loose network of connected neurons without centers of integration, and one has ganglia in which integration can occur.

brainliest to best answer

Answers

Answer:A flatworm has a simple nervous system with two nerve cords running down both of its sides. ... While a fish's nervous system is comprised of a central brain and a spinal cord along with many branching nerves, which allows them to sense things around them

Explanation:

A flatworm has a very mild nervous system with pair nerve cords moving down each side. It has two single brains called ganglia, which are pure packages of nerves. ... Fish have extremely advanced nervous systems organized around a brain.

brainliest?

After siting in the bathtub for hours your fingers start to look like prunes due to the process of

Answers

Answer:Shrinking Blood vassels

Explanation:

HELP HELP HELP I REALLY NEED THIS

Answers

Answer:

d

Explanation:

i think since more step

Which Image shows what the cell would look like in the next step?
5
HELP PLEASE!!

Answers

What was the first step?

What is the surface temperature of Barnard's Star in Kelvins? (Astronomy)

Answers

Answer:

the answer should be 3,100 kelvin.

Explanation:

its surface has very hot flares causing it to be about 3,000 to 8,000 kelvins. this would mean its surface temperature should be around 3,100.

All matter is composed of very small particles called:

Answers

Answer:

Atoms

Explanation:

what is the difference between a virus and a worm?

Answers

Answer:

The primary difference between a virus and a worm is that viruses must be triggered by the activation of their host; whereas worms are stand-alone malicious programs that can self-replicate and propagate independently as soon as they have breached the system.

Explanation:

Tidal volume is air ________. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration

Answers

Answer:

Tidal volume is air *around one half liter*. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration

Explanation:

Have a great day!

How are seeds produced

Answers

Answer:

From other seeds

Explanation:

They grow more seeds form the one seed

Answer:

From plant reproduction.

Explanation:

Plants produce flowers to make seeds. To make a seed a flower must be pollinated. Pollen from the male part of one flower travels to the female part of another flower where the seeds are made. Most, but not all plants, have both male and female parts inside one flower. The stigma is usually in the centre and the stamens, which produce the pollen, cluster around it. The petals act like an advertisement to attract various animals, which will carry the pollen from one flower to another.

I need help fast pls i only have 5 min so pls HELP

Answers

Answer:

I think it's c maybe not sure though

what can you do with snowflakes in animal crossing

Answers

Answer:

I don't know cause I don't play that but I think is cats

Match each part of the lymph node with the correct label.

Answers

Answer:

Your numbers are

1 Afferent Lymphatic Vessels

2 Lymphatic Nodule

3 Germinal Center

4 Efferent Lymphatic Vessels

Explanation: are correct

1 Afferent Lymphatic Vessels, 2 Lymphatic Nodules, 3 Germinal Centers, 4 Efferent Lymphatic Vessels.

What is a lymph node?

No lymph nodes exist in the central nervous system. The lymph nodes are more likely to gather in three locations on each side of the body.

The inguinal nodes in the groin, axillary nodes in the armpit, and cervical nodes in the neck are where these sites are found.

The typical lymph node is enclosed by a connective tissue capsule, which divides it into lymph nodules. The lymph nodules, which are dense aggregations of lymphocytes and macrophages, are divided by lymph sinuses.

Therefore, there are several locations throughout the node's perimeter where afferent lymphatics, which carry lymph there from the periphery and enter the node on its convex side, may be found.

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Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ________ ganglia.

Answers

Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ______ ganglia. A) intramural. B) collateral? Answer: Your Answer is going to be A! :D Happy Early Christmas!!! :D (!It Might be B but I don't know I think it's A!)

Explanation: Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called Intramural ganglia!!! Hope This Helps! Happy Early Christmas! :D

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Treaties were held at Fort Stanwix, Fort McIntosh, and Miami, all which treaties, according to your own acknowledgment, were for the sole purpose of making peace those few who attended those treaties, [declared]: That they went to meet your commissioners to make peace but, through fear, were obliged to sign any paper that was laid before them; and it has since appeared that deeds of cession were signed by them, instead of treaties of peace. Brothers: Money, to us, is of no value; and to most of us unknown: and as no consideration whatever can induce us to sell the lands on which we get sustenance for our women and children, we hope we may be allowed to point out a mode by which your settlers may be easily removed [from our land], and peace thereby obtained.Brothers: We know that these settlers are poor, or they would never have ventured to live in a country which has been in continual trouble ever since they crossed the Ohio. 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