Answers
on khan academy are four of them
Related Questions
What will happen to a cell that is placed in a hypotonic saline solution?
Answers
Answer:
In a hypotonic solution, the solute concentration is lower than inside the cell. If the water continues to move into the cell, it can stretch the cell membrane to the point the cell bursts (lyses) and dies.
Explanation:
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.
Directions: The diagram below shows how El Niño occurs when Pacific trade winds that are blowing east to west weaken. Use the diagram and your knowledge of science to answer any questions that follow.
The weaker trade winds cause
A
water off the coast of North America to become cooler.
B
water off the coast of Australia to become warmer.
C
water off the coast of Indonesia to become cooler.
D
water off the coast of South America to become warmer.
Answers
Answer:D
Explanation:
The diagram below shows how El Niño occurs when Pacific trade winds that are blowing east to west weaken water off the coast of South America to become warmer.
What is Pacific trade?The focus of American policy was the Trans-Pacific Partnership (TPP). a geopolitical shift by President Barack Obama toward Asia.
The TPP was slated to become the greatest free trade agreement in history, encompassing 40% of the world economy, but President Donald Trump withdrew the United States in 2017.
According to those who supported it, a deal of this nature would have increased American investment and trade abroad, boosted economic growth, reduced consumer prices, and produced new employment, all while furthering American strategic objectives in the Asia-Pacific area.
Therefore, The diagram below shows how El Niño occurs when Pacific trade winds that are blowing east to west weaken water off the coast of South America to become warmer.
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What is blue and white inside?
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Explanation:
light blue combining color
Does the process of building proteins release or absorb energy?
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Answer:
release
Explanation:
What I wonder about movement of the Earth, sun, & moon?
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Answer:
moon rotates and revolves around earth
earth rotates and revolves around sun
this rotation and revolution takes place in an oval shaped orbit..
ICY WATER SETUP:
What was the average for SKIN temperature change?
Question 1 options:
18 degrees F
.95 degrees F
20 degrees F
1.3 degrees F
Answers
Answer:
The answer is 20 degrees then the temperature will start going to other organs
The the average for SKIN temperature change is 20 degrees then the temperature will start going to other organs.
what is temperature ?Temperature can be defined as the hotness or coldness sensation of the body, determining the kinetic energy of particles in an object, the temperature increases as the movement of the particle go in a Faster rate.
The temperature has the role in every area and in all scientific disciplines, it is measured with the instrument like thermometer or a calorimeter, it determines the internal energy in a given system.
For the determination of temperature a sensor is used called RTD or Resistance Temperature Detector or a thermocouple which collects the temperature data from a particular source and converts these data into an understandable data.
Temperature sensors can be used in food processing units and medical devices, in thermometer, some of the temperature sensor used for non-scientific purposes, used in Thermistors, Semiconductors, Thermocouples etc.
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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.
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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.
the approximate length of the paramecium is
Answers
Answer:
325 micrometers. Hope this helped :)
Explanation:
If I'm wrong I apologize.
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.
Hello please help will give brainliest to the correct answer!
Answers
Answer:
B, the cell membrane
Explanation:
The cell membrane dictates what enters and exits the cell. It keeps the important stuff (such as organelles) inside the cell, allows nutrients to enter the cell, and keeps unwanted ¨things¨ from entering. The tea bag does roughly the same thing.
It keeps the important contents inside (in this case the tea leaves), allows water to come inside, and keeps whatever is in the water outside of the teabag. Obviously the cell membrane is much more complicated than a tea bag, but the tea bag works as a nice analogy.
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:
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 __________.
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Which parts of the water cycle require the water molecules to give away heat energy (cool
down)?
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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
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What does the cytoplasm do?
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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:
how religion influenced the causes and outcomes of the Salem Witch Trials.
Answers
Answer: They thought the cause was the devil speaking to these people and making them his "witches." The outcome was that people were afraid that the witches would do something to them so they put them on trial and hung them as well.
Hope this helps! :)
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
What are nine sources for stem cells
Answers
Answer:
bone marrow
umbilical cord blood
adipose tissue
allografts
amniotic fluid
Explanation:
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.
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:
compare and contrast the rate of photosynthesis in two areas.
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Explanation:
its the 3 for the answers
Identify the charges of the different parts of an atom.
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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
Hello the part labeled X is called the Mitochondria just so you know. Please help!
Answers
Answer:
B)to provide the cell with energy for their activities
Explanation:
HOPE THIS HELPS!!
A describes the nucleus
C describes the lysosomes
D describes chlorophyll
Essential nutrients move through a cell membrane by both passive transport and
active transport. Which of the following correctly describes the transport of
materials across a cell membrane?
A. Active transport requires chemical energy to move nutrients from areas of
low concentration to areas of high concentration.
B. Passive transport requires chemical energy to move nutrients from areas of
low concentration to areas of high concentration.
C. Active transport moves nutrients from areas of high concentration to areas
of low concentration without the use of chemical energy.
D. Passive transport moves nutrients from areas of low concentration to areas
of high concentration without the use of chemical energy.
Answers
Answer:
Your correct answer would be A
Explanation:
During this phase of cell division chromosomes settle at opposite ends and
nuclei begin to reform.
Answers
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.
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What structure is found in viruses but not in cells?
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Answer:F
Explanation:
One structure that is found in viruses but not in cells is the viral capsid.
What is a virus?Viruses are infectious agents that are much smaller and simpler in structure than cells. While cells are complex structures that have many components, including a cell membrane, cytosol, and organelles such as the nucleus and mitochondria, viruses have a much simpler structure.
One structure that is found in viruses but not in cells is the viral capsid. The capsid is a protein shell that surrounds and protects the viral genome (DNA or RNA). The capsid is made up of proteins called capsomeres, which are arranged in a specific pattern to form a shell around the viral genome. The capsid helps the virus to infect host cells and replicate its genome.
Viruses may also have a viral envelope, which is a thin layer of lipids that surrounds the capsid. The envelope helps the virus to enter host cells and may also contain proteins that allow the virus to evade the host's immune system.
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1. What is the purpose of the Digestive System? Select ALL that
apply
A. Digest or eliminate food
B. Absorb Nutrients
C. Help control hunger
D. Eliminate solid food waste
Answers
Answer:
A, B, and D!
I hope this helps, and have a great rest of your day! :)
How do each growing stage of an insect vary?
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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: