Answer:
Cells become cancer cells largely because of mutations in their genes. Often many mutations are needed before a cell becomes a cancer cell. The mutations may affect different genes that control cell growth and division. Some of these genes are called tumor suppressor genes.
Explanation:
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.
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Answer:
the answer is b - carbon atoms that were once in the radioactively labeled glucose were used to form DNA
hope this helps! <3
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
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
pushing your body to its limits to encourage your body to make physiological changes describes which principle?
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.
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
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.
What 3 factors influence the rate of photosynthesis?
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:
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
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
A series of open-air bodies of water used to slowly treat wastewater are
artificial wetlands
stabilization ponds
biodegradable treatments
open aeration ponds
what is the meaning of heart of the lungs
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
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 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.
HELP ME PLEASEEE
1. What percentage of the offspring will be heterozygous?
2. Why does each parent contribute only one allele to the offspring?
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 :)
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
Help with biology plzz USA test prep
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
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
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 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=searchResultsHi, 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
Which object has the most gravitational pull?
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:
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
please help
20 points
77. Select the words from the word box below to complete the statements.
These are
inorganic materials needed in small amounts
O Proteins
0 Vitamins
Water
0 0
Fats
well water would be the only possible answer
The ____________ is a muscular dome that forms the inferior boundary of the thorax, separating the thorax from the abdomen.
Answer: the answer is diaphragm
The amount of available ______ limits the number of trophic levels in a community.
help!!!!
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:
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.
explain how the structure and the function of squamous epithelium in the lung are important for gas exchange(4 marks)
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.
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