Answers
Answer:
polyploldy is the answer
Related Questions
5) Explain why the organisms at the top of a food chain (Eagles, for example) are more affected
by pollution in the ecosystem than organisms lower on the food chain (snails, for example)
Answers
Answer:
if pullution occurs, Fish may be consumed by birds and other animals and the pollution gets transferred through the food chains until it reaches humans.
It is known that some tumors are associated with tumor viruses. It remains unknown, however, whether or not other tumors such as those induced by chemical carcinogens are also associated with tumor viruses. Design a series of experiments to test the hypothesis that a chemical carcinogen-induced tumor cells contain altered genome (as compared to its unaltered state in the normal cell counterparts) and this genomic DNA alteration is responsible for the transformed phenotypes of the tumor cells. Include in your experimental design the following:
1) the overall strategy,
2) the reagents chosen including controls and why they are chosen,
3) at least four types of transformation assays, including both in vitro and in vivo assays, to be used to measure the properties of transformed cells, and
4) the strategy to interpret the results and to draw a conclusion.
Answers
Answer:
Experimental procedure:
1- To expose cell lines to both chemical carcinogens and viruses known to produce cancer (e.g., Epstein-Barr virus, hepatitis B virus, human papillomavirus, herpesvirus-8, etc) simultaneously.
2- By using real-time PCR (RT-PCR), to amplify mRNAs for specific target oncogenes both in normal cells and in cells that acquired cancer traits such as, for example, cell proliferation and survival. During this experimental procedure, it is required to include in vitro transformational assays including 1-anchorage independence, 2-morphological transformation (where the cells are scored for lack of contact inhibition), 3-focus formation and 4-immortalization.
3- Also by RT-PCR, to amplify mRNAs for specific viral mRNAs (i.e., to determine the viral load) in cancer-related cell lines.
4- To determine if there is a statistical significance between specific oncogene mRNAs versus viral expression in cancer-related cell lines
Experimental controls:
- Negative control: normal cells (i.e., cells non-exposed to chemical carcinogens and viruses)
- Positive control: immortalized cell lines where it has been found that the target oncogenes are expressed. It is possible to obtain this genetic data from other studies (i.e., by searching this information in the corresponding scientific publications)
Explanation:
By using this experimental procedure, it is possible to identify if there exists a correlation between the presence of viral mRNA and oncogenes previously recognized for being amplified in different types of cancers in cell lines that were capable of developing cancer traits.
Scientists warn that rising CO2 levels will have what effect on the Earth?
A
cause sea levels to drop
B
trap heat in the atmosphere causing the greenhouse effect
C
cause acid rain
D
speed up the next ice age
Answers
Answer:
B
Explanation:
Because Molecules of carbon dioxide (CO2) can absorb energy from infrared (IR) radiation. This animation shows a molecule of CO2 absorbing an incoming infrared photon (yellow arrows). ... This ability to absorb and re-emit infrared energy is what makes CO2 an effective heat-trapping greenhouse gas. And it will lead to green house effect...
Scientists warn that rising CO2 levels will have trap heat in the atmosphere causing the greenhouse effect on the earth. Thus, option B is correct.
What are scientific thinking?Scientific thinking is a type of information that includes intentional information seeking, including asking questions, testing hypothesis and making observations as well as recognizing pattern.
The scientific or scientists are clear as to the purpose at hand and questions at the issue. The scientific essential standards that should be implies on the elements of scientific thought such as clarity relevance depth, breath, logic and accuracy.
The scientific thinking prefers to thinking about the content of science and the set of reasoning process.The example of scientific thinking is that question information, conclusions and points of view which is strive to be accurate, relevant and precise.
Therefore,Scientists warn that rising CO2 levels will have trap heat in the atmosphere causing the greenhouse effect on the earth. Thus, option B is correct.
Learn more about scientific thinking here:
https://brainly.com/question/2065417
#SPJ6
How do the potential energy and the kinetic energy change when the skateboarder is at the top or the bottom of the hill? Why do you think this change occurs?
Answers
Answer:
Potential at the top. Kinetic when going down the hill.
Explanation:
Its basically mechanical energy! While at the top you have the potential to go down and race down using kinetic energy.
Answer:
The potential energy (P.E) and the kinetic energy (K.E) are two types of distinct energy that is commonly observed in our day-today's life.
Usually, K.E is defined as a type of energy that is produced when an object is in motion. Where, as P.E is a type of energy that is stored in an object when that object is placed at a certain height.
In the given condition, when the skateboarder is at the top of the hill, then at that position, it is comprised of maximum P.E. As the he slowly comes down the hill, then the P.E gradually decreases, and the K.E gradually increases. This shows the P.E is slowly changing into the K.E. And as it comes down, the K.E increases, and eventually when he stops, then both the K.E and P.E becomes zero.
This changes occurs because energy can never be created nor destroyed, and it changes from one form to another.
Explanation:
Identify the charges of the different parts of an atom.
Answers
Answer:
The parts of an atom are protons, electrons, and neutrons. A proton is positively charged and is located in the center or nucleus of the atom. Electrons are negatively charged and are located in rings or orbits spinning around the nucleus.
Explanation:
emilythompson35464
hope this helps srry if it doesn't tho
Which parts of the water cycle require the water molecules to give away heat energy (cool
down)?
Answers
The part of the water cycle that require the water molecules to give away heat energy is : Condensation
Meaning of water cycle and condensation
A water cycle can be defined as the cycle that entails the continuous and consistent movement of on the the earth surface, which is above the earth surface and below the earth surface.
Condensation is a process where gasses changes to liquid. it is the cooling down of water molecules that are in form of vapor and converting to water in its liquid form.
In conclusion, The part of the water cycle that require the water molecules to give away heat energy is Condensation
Learn more about water cycle: https://brainly.com/question/2430469
#SPJ2
Plant and animals cells have a lot in common. Compare and contrast the two cells. Select the features that you find in BOTH types of cells. A). Membrane,nucleus,cytoplasm. B). Membrane,chloroplast,nucleus. C). Cell wall, cell membrane, nucleus. D). Cell membrane and cell wall, chloroplast
Answers
Answer:
Membrane, nucleus, cytoplasm are found in both plants and animal cells because they are Eukaryotes.
What is blue and white inside?
Answers
Explanation:
light blue combining color
Which argument is correct about the growth of an organism?
Only genetic factors affect the growth of an organism.
Only environmental factors affect the growth of an organism.
The combination of genes and environmental factors affects the growth of an organism.
Genes remove the environmental factors that affect the growth of an organism.
Answers
Answer:
The answer is C
Explanation:
Just think about it. How do you grow?
What I wonder about movement of the Earth, sun, & moon?
Answers
Answer:
moon rotates and revolves around earth
earth rotates and revolves around sun
this rotation and revolution takes place in an oval shaped orbit..
HELPP :(
Which statement describes the most common ways in which students and professional scientists communicate the
results of their scientific research?
A.Students communicate results in oral reports to the class, and professional scientists communicate results in written
reports.
B.Students communicate results in scientific journals, and professional scientists communicate results in laboratory
reports.
O Students communicate results in laboratory reports, and professional scientists communicate results in scientific
journals.
O Students communicate results through secondary sources, and professional scientists communicate results through
primary sources.
Answers
The correct answer is C. Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.
Explanation:
Both students and scientists can carry out scientific research that involves studying a phenomenon by using the scientific method and scientific instruments. However, professional scientists and students differ in their level of knowledge and expertise in science. This makes scientific research made by scientists to have some differences in comparison to scientific research by students.
One of these differences is the way results are communicated. Indeed, students develop simple scientific research and the results are communicated in laboratory reports at school, colleges, etc. On the other hand, professional scientists develop complex research. Due to this, results are communicated in academic texts with strict criteria and that can be seen by other scientists, these are known as scientific journals.
How do each growing stage of an insect vary?
Answers
Answer:
Most insects change in form during their development, and the successive stages are not all alike. This change in form is called metamorphosis. It is controlled by a juvenile hormone secreted by glands in the insect's head. The juvenile hormone is released during each molt, but the amount decreases each time.
Explanation:
compare and contrast the rate of photosynthesis in two areas.
Answers
Explanation:
its the 3 for the answers
What are two ways that you could change the path of light? what materials would you need to do it?
Answers
Answer:
Light travels in a straight line until something alters its path. Here are three ways light's path can be altered: it can be refracted, reflected, or absorbed.
Materials such as a mirror or aluminum can reflect light.
Materials such as water or glass can refract light.
Materials such as coal or clack paint can absorb light.
The two different ways that a person could change the path of light are refraction and reflection of light.
What is Refraction and reflection?Reflection is the phenomena of bouncing back of the light rays when it strikes the medium such as air, water, etc on a plane. Refraction can be defined as the process of the deflection of light when it passes through a medium that lead to the bending of light rays.
The two main ways in which the light's path can be altered include refraction and reflection of light.
For example, materials such as a mirror or aluminum can reflect light, materials such as water or glass can refract light.
Learn more about Light here:
https://brainly.com/question/15200315
#SPJ2
What does the cytoplasm do?
Answers
Answer:
The cytoplasm provides a medium for the organelles to remain suspended. The cytoplasm acts as a buffer and protects the genetic material of the cell and also the cellular organelles from damage caused due to movement and collision with other cells.
Explanation:
What causes mass wasting?
Answers
Answer: What causes mass wasting is rain, or even earthquakes. These events can occur rapidly and move as a flow.
Explanation:
Answer:b
Explanation:
What are phanerograms
Answers
Answer:
Phanerogams are terrestrial plants and more advanced than the cryptogams. These are also called as flowering plants. Following are the characteristic features of phanerogams: They have well-differentiated plants i.e. the plant body is divided into distinct root, shoot, and leaves.
The spermatophytes, also known as phanerogams or phaenogams, comprise those plants that produce seeds, hence the alternative name seed plants. They are a subset of the embryophytes or land plants.
Radio and cell signals are bent around objects like mountains and tall buildings. This can allow you to still have a signal, even without a straight line to the tower. This bending of waves around a barrier or through a slit is called ______.
Group of answer choices
interference
refraction
reflection
diffraction
Answers
The bending of waves around a barrier or through a slit is called ( D ) ; Diffraction
Diffraction is the term used to describe the situation/phenomena whereby waves ( radio or cell signals ) emanating from an antenna is bent around obstacles between the antenna and the signal receiver.
Diffraction of waves is usually caused by the interference of waves with itself due to the presence of an obstacle. in order to get to the intended receiver the waves bends around the barrier through diffraction after constructive interference within itself.
Hence we can conclude that the bending of waves around a barrier or through a slit is known as diffraction
Learn more : https://brainly.com/question/13080010
DNA is genetic material that makes up living things and folic acid
Answers
Answer:
The correct answer is option (C) The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
DNA or the deoxyribonucleic acid is made up of the nitrogenous bases called the purines and pyrimidines. Folic acid or the vitamin B9 is essential for the synthesis of these nitrogen bases of the DNA. A scientific experiment conducted always has two parameters, a dependent and a independent variable. A dependent variable in an experiment is a variable which is being tested and measured. In the experiment Jon is conducting, the amount of DNA becomes an dependent variable which is being tested and measured in presence of folic acid. An independent variable in an experiment is the variable that is changed or controlled in the scientific experiment to test the effects on the dependent variable. Here, folic acid becomes an independent variable as the amount of it is varied and tested to check the formation on DNA in bacteria. Thus, an independent variable always changes to check its effect on the dependent variable.
Explanation:
Which scenario best describes how climate trends might affect animal migration?
Animals found in the Arctic may move south.
Animals found at the equator may move north.
Animals found in higher elevations will move to lower elevations.
Animals found in lower elevations will stay in the same location.
Answers
Answer:
Answer is B
Explanation:
Animals either migrate northward or to higher elevations during rising temperatures as stated in the lesson
What is the process that leaves sediment in a new area called
Answers
Answer:
Deposition
Explanation:
Answer:
B
Explanation:
The answer is deposition
If a tree grows 1/4 a foot in 1/12 of a year. How much will it grow in 3 years?
Answers
Answer:
3 feet
Explanation:
The tree grows 1/4 foot each month (1/12 of a year)
So the tree grows (1/4)(12) feet in a year. That is 3 feet.
In math:
(1/4) / (1/12)
(1/4) · 12 to divide by a fraction, invert and multiply
3
An element with 13 protons has an atomic mass of 27. Its number of neutrons is
Answers
There are 14 neutrons in this element.
Object
Mass (kg)
Potential
Energy (J)
#1
#2
#3
#4
80
40
20
40
Height
(m/sec)
4
2
2
8
Answers
Answer:
Find potential energy, velocity and kinetic energy at each given point. (contains diagram)
Guys please help me I really need to pass this test :( I will give branliest !!
Answers
Answer:
D. ability to sense and respond to change
its probably wrong but youll always be right if you stan bts :))) just kpop in general lol
Answer:
B
Explanation:
Not all living things take in oxygen, while the 5 characteristics of life include the ability to grow/develop, use energy for daily functions, and respond to changes in their environment. Therefore, B is the only option that is not a characteristic of all organisms. Hope this helps!
The muscles that laterally rotate and depress the scapula, as in shrugging and lowering the shoulders, are the __________.
Answers
Briefly explain what properties of the atoms in water (H2O) give water the ability to form hydrogen bonds. Your answer should include the words: electronegativity, hydrogen, oxygen, electrons, protons.
Answers
Answer:
Water molecules are polar, so they outline hydrogen bonds. This gives water great properties, such as a for the most part high bubbling or boiling point, tall specific warm, cohesion, grasp, and thickness. Hydrogen has an electronegativity of 2.0, though oxygen has an electronegativity of 3.5. The refinement in electronegativities is 1.5, which infers that water can be a polar covalent molecule. In water, an electron from each of the hydrogen particles is drawn towards the oxygen particle. Protons, as unequivocally charged hydrogen particles, move outstandingly rapidly in water from one water molecule to the taking after, which is why the conductivity of water is modestly tall.
why is the matrix of the bone hard ?
Answers
Answer:
Due to the presence of mineral salt in the osteoid matrix, which is a crystalline complex of calcium and phosphate (hydroxyapatite). Calcified bone contains about 25% organic matrix (2-5% of which are cells), 5% water and 70% inorganic mineral (hydroxyapatite).
Explanation:
I think you answered on of my questions before or was on one of mine lol.
I am not sure but I recognize the pfp
The appearance of mineral salt in the osteoid matrix, which would be a crystalline complex of calcium and phosphate, contributes to bone hardness and rigidity.
What are osteoid matrix?The osteoid is the unmineralized, organic portion of the bone matrix that constructs prior to bone tissue maturation.
It usually initiate the formation of bone tissue by secreting the osteoid as a series of specific proteins.
Thus, due to this, matrix of bone is hard.
For more details regarding osteoid matrix, visit:
https://brainly.com/question/13506735
#SPJ2
9. If Seneca decides to walk across town to a store that is .95 kilometers away and
she has only 25 minutes to get there, what speed does she need to maintain in
order to reach the store on time?
Answers
Answer:
95k / 25mn = 3.8m/s
Explanation:
I did this this morning...but i'm not sure whether it's right or wrong.
Which type of organism can obtain energy
directly from any of the other organisms in an
ecosystem?
(1) herbivore
(3) producer
(2) decomposer (4) carnivore
Answers
Answer:
2 decomposer or 3 producer
Explanation:i kinda forgot lol
Option 2. Decomposers are the organisms that can obtain energy from any other organisms in an ecosystem as they breakdowns all type of dead organisms.
In an ecosystem, there are various kinds of organisms on the basis of their feeding behavior such as:
Producers: make their food and energy on their own.Herbivore - a primary consumer that depends upon producers for its energy and food. Carnivore - a secondary consumer that depends on herbivores or other consumers.Decomposers: organisms that get their energy and nutrition from any organism are dead or organic matters such as animal and plant wastes.Thus, the correct answer is - 2) decomposers.
Learn more about decomposers:
https://brainly.com/question/16599318