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.
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:
https://brainly.com/question/1228601
#SPJ2
Answer:
the answer is b - carbon atoms that were once in the radioactively labeled glucose were used to form DNA
hope this helps! <3
what virus cycle causes immediate infection
Answer:
the lysogenic cycle does not result in immediate lysing of the host cell
where does the carbon for photosynthesis come from
Carbon Dioxide
Don't ask me how I got it, I just remeber
Ps. Branilist would help a lot
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 :)
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:
which two organelles in eukaryotic cells originated from prokaryotes?
Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form of plastid) may have arisen from engulfed prokaryotes.
state one way of monitoring the activity of the heart other than measuring pulse
Answer: fitness tracker or a strap that you put against your chest
Explanation:
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
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.
What are some ways people in Everglades are getting rid of Burmese Pythons?
Answer:gas
Explanation:when i learned about this we used gas bombs to rat them out and poisin them
in general, enzymes are what kinds of molecules?
Answer:
Enzymes are proteins.
pushing your body to its limits to encourage your body to make physiological changes describes which principle?
Explain the difference between afferent and efferent neurons.
Answer:
The Difference between Afferent and Efferent Neurons :- Neurons that receive information from our sensory organs (e.g. eye, skin) and transmit this input to the central nervous system are called afferent neurons. Neurons that send impulses from the central nervous system to your limbs and organs are called efferent neurons.Hope this helps you XD !!!How many feet will a wombat cover in 15 minutes at an average speed of 2100 ft/min??
Answer:
31,500
Explanation:
If you use the formula:
Speed x Time
you sould be able to find the anwser to any distance question.
What is the expression y is 8 less than the product of 3 and x
Answer:
8<3x
Explanation:
< is a symbol of less than and when you multiply 3 by x the answer is 3x so 8<3x
what is the meaning of heart of the lungs
Oxygen is the heart of the lungs
A series of open-air bodies of water used to slowly treat wastewater are
artificial wetlands
stabilization ponds
biodegradable treatments
open aeration ponds
Hi, what is the Calvin cycle or light-independent reaction, and what is the light-dependent reaction? pls, explain what happens on the stage.
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.
The light dependant reaction is
The reaction which depends on sun light and ends right after light goesLike NADPH formation
HELP PLEASE PICTURE PROVIDED
Answer:
Students 2 and 3
Explanation:
Students 2 and 3 have aptly described lipids and proteins respectively.
The description of Student 1 corresponds to nucleic acids, while the description fo Student 4 corresponds to Carbohydrates (vice versa).
What is probability and what is it’s role in scientific conclusion
explain how the structure and the function of squamous epithelium in the lung are important for gas exchange(4 marks)
What 3 factors influence the rate of photosynthesis?
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
Answer:
D - It is cheaper to use fossil fuels than to invest in renewable energy technology.
Hope that helped. x
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
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
Which of these changes is a possible negative consequence of farmers
allowing livestock to overgraze a pasture?
O A. Desertification
O B. Shortage of freshwater
O c. Deforestation
O D. Abundance of clean air
Given what we know, one of the possible negative consequences of farmers allowing livestock to overgraze a pasture is desertification.
What is Desertification?In simple terms, desertification is when the land becomes so dry and void of life that it can be considered a desert. This can be caused by many factors, primarily the lack of vegetation.How can overgrazing lead to Desertification?Overgrazing can lead to desertification due to the fact that the plants and vegetation are not given the opportunity to regrow.The presence of vegetation allows the soil to remain moist and fertile by moving minerals and water through it. Overgrazing causes a lack of vegetation which creates dry and infertile land, which leads to complete desertification.Therefore, we can confirm that one of the possible negative consequences of farmers allowing livestock to overgraze a pasture is desertification due to the damage caused to the soil in the absence of vegetation.
To learn more about Desertification visit:
https://brainly.com/question/2426422?referrer=searchResults
the membrane activity most nearly opposite to exocytosis is:
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
The amount of available ______ limits the number of trophic levels in a community.
help!!!!
Drag each tile to the correct box.
Tanya planted seedlings in her garden over the weekend. The instructions that came with the seedlings stated that they need to be planted 0.2
meters apart. Tanya has a measuring tape that has values in centimeters. Help Tanya convert meters to centimeters.
pls put them in order
65 Pts
Answer:
20 centimeters apart.
Explanation:
Tanya planted seedlings in her garden over the weekend. The instructions that came with the seedlings stated that they need to be planted 0.2 meters apart. Tanya has a measuring tape that has values in centimeters. As we know 1 meter = 100 centimeters . Therefore, 0.2 meter = 0.2 × 100 = 20 centimeters. So Tanya need to be planted 20 centimeters apart.
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.
The correct order of flow of energy and its conversion is
Light energyChemical energyPotential and Kinetic energyDuring 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
please help
20 points
77. Select the words from the word box below to complete the statements.
What is photosynthesis???
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:
brainly.com/question/13523854?referrer=searchResults brainly.com/question/13523849?referrer=searchResults brainly.com/question/873199?referrer=searchResultsWhen would a point mutation occur?
It can occur before and after cell division
Before the cell divides
After the cell divides
Before DNA replication
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.