A scientist carried out an experiment to follow the movement of carbon atoms within animal cells. To do this, the scientist added glucose with radioactively labeled carbon atoms to a culture of cells growing in a Petri dish.

After a certain amount of time had passed, the scientist tested parts of cells for radioactivity. Radioactivity was detected in various biomolecules, including DNA.


Which of the following statements best explains why radioactivity was detected in the DNA?
Choose 1 answer:

(Choice A)
The DNA was in close proximity to the radioactive glucose during its formation.

(Choice B)
Carbon atoms that were once in the radioactively labeled glucose were used to form DNA.

(Choice C)
The DNA was made up of radioactively labeled glucose subunits.

Answers

Answer 1

Carbon atoms that were once in the radioactively labeled glucose were used to form DNA -  this statement best explains why radioactivity was detected in the DNA.

What is radioactivity in DNA?

Radioactivity is known to induce tumors, chromosome lesions, and minisatellite length mutations.

Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions.

The radiation could damage the cell’s DNA, but the DNA repairs itself. The radiation could prevent the DNA from replicating correctly. The radiation could damage the DNA so badly that the cell dies.

The correct answer is option B.

Learn more about radioactivity, refer:

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#SPJ2

Answer 2

Answer:

the answer is b - carbon atoms that were once in the radioactively labeled glucose were used to form DNA

hope this helps! <3

A Scientist Carried Out An Experiment To Follow The Movement Of Carbon Atoms Within Animal Cells. To

Related Questions

Hi, what is the Calvin cycle or light-independent reaction, and what is the light-dependent reaction? pls, explain what happens on the stage.

Answers

Answer:

The Calvin Cycle is a process used by plants to turn Carbon Dioxide from the air into Sugar. Sugar is the food that autotrophs need to grow.

Celvin cycle is the reaction used by green plants to convert carbon dioxide into carbohydrates like glucose

The light dependant reaction is

The reaction which depends on sun light and ends right after light goes

Like NADPH formation

Help with biology plzz USA test prep

Answers

Answer:

see below

Explanation:

amplification: MUTATION = a type of mutation

independent assortment: MENDELIAN = how different

genes independently separate from one another

when reproductive cells develop

nondisjunction: MUTATION = a type of chromosomal

mutation

translocation: MUTATION = another type of chromosomal

mutation

codominance: MENDELIAN = a relationship between two

genes where neither allele is recessive and both

are expressed

insertion: MUTATION = a type of mutation

radiation: MUTATION = causes mutations

virus: MUTATION = causes mutations as the virus

replicates

deletion: MUTATION = a type of mutation

law of dominance: MENDELIAN = one of Mendel's laws

of inheritance

sex linked traits: MENDELIAN = linkage is an exception

to Mendel's law of independent assortment

incomplete dominance: MENDELIAN = when none of the

factors of a gene is dominant and there is a blend,

such as a red flower crossed with a white flower

turns out pink

law of segregation: MENDELIAN = one of Mendel's laws

of inheritance

substitution: MUTATION = a type of mutation

The amount of available ______ limits the number of trophic levels in a community.
help!!!!

Answers

resources :) take care

state one way of monitoring the activity of the heart other than measuring pulse​

Answers

Answer: fitness tracker or a strap that you put against your chest

Explanation:

How do you think astronomers group planets?

Answers

Answer:

They group them biased off of similar traits and there orbital paths.

Explanation:

I hope this helped ^ ^

When would a point mutation occur?

It can occur before and after cell division
Before the cell divides
After the cell divides
Before DNA replication

Answers

Answer:

The correct answer is option 1. Before and After Cell Division

Explanation:

Point mutations are frequently the result of mistakes made during DNA replication, although modification of DNA, such as through exposure to X-rays or to ultraviolet radiation, also can induce point mutations. But they may also occur after as well as before the division of a cell.

the membrane activity most nearly opposite to exocytosis is:

Answers

Answer:

endocytosis

Explanation:

Endocytosis is defined as the process of trapping a particle or even a substance from the external environment by the process of engulfing it. The flexibility of the cell membrane helps the cell to engulf the food and also other materials from the external environment. Such a process is called endocytosis whereas exocytosis is the fusion of secretory vesicles with the plasma membrane and results in the discharge of vesicle content into the extracellular space

How many feet will a wombat cover in 15 minutes at an average speed of 2100 ft/min??

Answers

Answer:

31,500

Explanation:

If you use the formula:

Speed x Time

you sould be able to find the anwser to any distance question.

please help
20 points

77. Select the words from the word box below to complete the statements.

Answers

I can’t see very well I’m sorry but I think it’s sugars and electrons

Which object has the most gravitational pull?

Answers

Answer:

Jupiter, the fifth planet from the Sun, has the strongest gravitational pull because it's the biggest and most massive.

Explanation:

Answer:

Jupiter

Explanation:

These are
inorganic materials needed in small amounts
O Proteins
0 Vitamins
Water
0 0
Fats

Answers

well water would be the only possible answer

brainliest goes to best answer! Explain the flow of energy as it is transformed through photosynthesis AND aerobic cellular respiration.

Be sure to explain how energy is processed and changed as it passes through and between each process.

EX: Stored energy in gas is converted to heat when you light the stove. This heat is transferred to the food as heat energy while it cooks.

Answers

The correct order of flow of energy and its conversion is

Light energyChemical energyPotential and Kinetic energy

During photosynthesis, plants converts light energy from the Sun into

chemical energy in the form of glucose. Cellular respiration involves the

conversion of chemical energy from glucose into potential and kinetic

energy by body cells

The chemical energy from glucose is converted into ATP which is another

form of chemical energy.The ATP formed helps cells perform various

activities and state of rest such as sleeping in the body through the

conversion of the chemical energy into kinetic and potential energy

respectively.

Read more about energy conversion on https://brainly.com/question/961052

What is a nucleotide?

A) a monomer made of an adenosine triphosphate, a phosphate, and a sugar
B) a DNA segment
C) a monomer made of a 5-carbon sugar, a phosphate group, and a nitrogenous base
D) a polymer made of DNA and RNA

Answers

Explanation:

Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid and ribonucleic acid, both of which are essential biomolecules within all life-forms on Earth.

draw the flow chart showing the sequential order of reproductive stage and fertilization​

Answers

The sequential order of reproductive stage and fertilization starts with the

male and female sex cells being produces through meiosis. The male sex

cell which is the sperm is produced in the testes while the female sex cell

which is the egg is produced in the ovary.

During copulation, the sperm cells are released into the vagina which then

swims through the cervix and uterus to the fallopian tubes where the

fertilization occurs.

There is then movement of the zygote formed from the fertilization to the

uterus where development occurs.

Please refer to the attachment .

Read more about Fertilization here https://brainly.com/question/1154065

What 3 factors influence the rate of photosynthesis?

Answers

Light exposure, carbon dioxide levels and water levels

What is the expression y is 8 less than the product of 3 and x

Answers

Answer:

8<3x

Explanation:

< is a symbol of less than and when you multiply 3 by x the answer is 3x so 8<3x

pushing your body to its limits to encourage your body to make physiological changes describes which principle?

Answers

the overload principle

What is photosynthesis???​

Answers

By definition, photosynthesis is a metabolic process carried out by certain cells of autotrophic organisms, that is, those that have the capacity to make their own food, such as plants.

With this process, plants capture the energy of sunlight and transform it into chemical energy, to produce organic matter.

Photosynthesis takes place in 2 stages:

In the first stage the plants absorb water from the soil through the roots. Through their stems they transport it to their leaves. In these it meets the sunlight captured by chlorophyll, which breaks the water molecule, separating hydrogen (H) from oxygen (O₂). The other stage is capturing carbon dioxide. This provides the carbon and oxygen atoms that, together with hydrogen and stored energy, will form the glucose molecule, from which compounds are produced that are the basis of food for plants and other living beings.

Then, sunlight, carbon dioxide and water are needed for the photosyntesis, while oxygen is released to the environment.

Learn more about the photosynthesis:

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Label the following with
N (neutron), P (proton),
E (electron)
___Negative charge
___ Atomic number ___determination
___ Atomic mass determination
___ Involved in bonding
___ Positive charge
___ when gained or lost creates ions
___ Neutral charge
___ Found in nucleus

Answers

Answer:

E, P, N and P, E, P, E, N, N and P

Explanation:

I am pretty sure the answers would go like this (in the order you have here):

1. Electron (they have a negative charge)

2. P (The atomic number is determined by the number of protons)

3. N and P (The atomic mass is determined by how many Neutrons and Protons there are in the atom)

4. Electron (they are usually involved in bonding)

5. Proton (they have positive charge)

6. Electron (ions are created when an atom has gained or lost electrons)

7. Neutron (they are neutral)

8. Both Neutrons and Protons (they stick together inside the nucleus)

I am not entirely sure why the atomic number determination has 2 blanks since it is only determined by protons, but I hope this helps. I havent studied this for a while but those are the best answers I can provide and have checked them with my books so I hope they are correct. Good Luck!

Dragon

Can someone explain what polymers, monomers, and isomers are to me? What is the difference between isomers and polymers? Thanks, I'm studying for a test in about a week :)

Answers

Answer:

A monomer is a single unit of a substance (eg. Amino acid). A polymer is a chain of monomers (eg protein). An isomer is a molecule of an element with the same chemical formula but a different chemical structure (sucrose and maltose).

Explanation:

The ____________ is a muscular dome that forms the inferior boundary of the thorax, separating the thorax from the abdomen.

Answers

Answer: the answer is diaphragm

5. One reason that viruses are harmful to living cells and classified as pathogens is that they-
A cause organisms to produce daughter cells through the process of mitosis
B stimulate the production of ATP in mitochondria within host cells
C damage the cells used in the production of new virus particles
Dreduce the amount of cholesterol in the blood of people with heart disease

Answers

The answer is b. Just took the test

HELP!! what is the main reason that we continue to use fossil fuels for our electricty and transportation?

A)There are not enough dams in the US

B) Wind is to complicated to set up

C) Solar energy is limited

D) It is cheaper to use to fossil fuels then to invest in renewable energy technology

Answers

Answer:

D - It is cheaper to use fossil fuels than to invest in renewable energy technology.

Hope that helped. x

HELP ME PLEASEEE
1. What percentage of the offspring will be heterozygous?
2. Why does each parent contribute only one allele to the offspring?

Answers

Answer:

1. 50% from the picture as they are Aa which means they are heterozygous and AA mean dominant and aa means ressecive.

2. Because alleles are segregated during meiosis when homologous chromosomes are separated.

Explanation:

Hope this make helps you to understand :)

1. 50%
2. Because alleles are segregated during meiosis when homologous chromosomes are separated.

what is the meaning of heart of the lungs ​

Answers

Oxygen is the heart of the lungs

Geologists determine the
geological history of an area by
examining rock layers in geologic



columns. The diagram shows
three geologic columns from the
same region that have not been
overturned.
A.
Place an arrow at each rock
layer boundary to represent a
missing layer of rock in each
of the three columns.
Next part in pic

Answers

The sample columns have two missing layers as follows:

Column 1: Layers 3 and 8 are missing. Column 2: Layers 1 and 7 are missing. Column 3: Layers 1 and 5 are missing.

What is geology?

Geology is a term to refer to the specialized science that focuses on the study of the composition and internal and external structure of the surface of the planet Earth, and the processes by which it has evolved throughout geological time.

In the image 3 columns are shown showing various layers of the Earth, however, each of it has 2 missing layers. To know which layers were missing from each one, we must analyze them to establish what a column with complete layers would look like and then compare the 3 samples with the model to know which layers are missing.

According to the previous process, it can be inferred that the missing layers in each column are:

Column 1: Layers 3 and 8 are missing. Column 2: Layers 1 and 7 are missing. Column 3: Layers 1 and 5 are missing.

Note: This question is incomplete because the graph is missing. Here is the graph.

Learn more about geology in: https://brainly.com/question/1407519

A series of open-air bodies of water used to slowly treat wastewater are

artificial wetlands
stabilization ponds
biodegradable treatments
open aeration ponds

Answers

The answer is: B - stabilization ponds.

the human lineage began to diverge from those of other primates about

Answers

C. 6 million years ago

where does the carbon for photosynthesis come from

Answers

Carbon Dioxide

Don't ask me how I got it, I just remeber

Ps. Branilist would help a lot

explain how the structure and the function of squamous epithelium in the lung are important for gas exchange​(4 marks)​

Answers

Squamous cells area one single layer and flattened, this allows for diffusion of oxygen and carbon dioxide to happen easily in the lungs.
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