Answer:
R = 480 Ohm
Yes, the current is steady since the power supply is a constant 12V (comming from the battery).
Explanation:
U=I*R
R = U / I
U = 12 V
I = 0.025 A
R = 12 / 0.025
R = 480 Ohm
Which product of cellular respi tion is used by the human body for energy?
O oxygen
Ο ΑΤΡ
O sunlight
O CO2
Answer:
The answer is option 2.
Explanation:
ATP is the main product of cellular respiration.
According to the Punnett square for this cross, what percentage of offspring is predicted to have blue feathers?
25 percent
O 50 percent
O 75 percent
O 100 percent
Answer:
50 percent
Explanation:
The answer above is NOT correct.
I took the test on Edge and 50 percent is right!
According to the Punnett square for this cross,50% percentage of offspring is predicted to have blue feathers.
What is Punnett square ?The Punnett square is a table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given.
How do you find the Punnett square?Count the total number of boxes in your Punnett Square. This gives you the total number of predicted offspring.
Divide the (number of occurrences of the phenotype) by (the total number of offspring). Multiply the number from step 4 by 100 to get your percent.
Therefore, according to the Punnett square for this cross,50% percentage of offspring is predicted to have blue feathers.
Hence ,B is correct option
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Which element is considered the most versatile element in living organisms and why?
Answer:
Carbon
Explanation:
Answer:
C: carbon, because it can bond with many elements to form complex molecules
Explanation:
Write one scientific question about the organism in the photo.
Answer:
Please attach the photo of the organism.
Explanation:
Fill in the blank. Bacteria of viruses can cause ----------- diseases. Which are increasing in occurrences geographic area, or both
Energy "moves from place to place." The term that describes this is___
a. Energy displacement
b. Energy transition
C. Energy transfer
d. Energy movement
Answer:
C. Energy transfer
What are the four ways drugs can affect the nervous system?
Answer: They cause complete paralysis, and even stop the person from breathing, stimulate the synapse so that once an impulse crosses the gap the impulse is repeated over and over again, and They cause all the muscles in the body to go into a continuous spasm of constriction. They can also cut off communication to the nervous system that's where you feel the numbness in painkillers Hopefully this helps!
What is the answer, help me!
Answer:
4. They blow faster
What would happen if a tiger switched habitats?
Answer:
It could possibly go instinct or they could show issues and carry diseases
Explanation:
Which elements are involved in creating genetic
material? Check all that apply.
carbon
hydrogen
oxygen
nitrogen
phosphorus
sulfur
Answer:
Explanation:
The elements that are involved in creating genetic material include carbon , hydrogen , oxygen , nitrogen , phosphorus. Explanation; -Genetic material is mainly the DNA and RNA.
Answer: The answer your looking for is A,B,C,D and E
Explanation:
Why is an overabundance of nutrients harmful to a water supply?
A.
It decreases the number and types of aquatic plants.
B.
It kills all aquatic plants.
C.
It sterilizes water.
D.
It causes excessive aquatic plant growth.
Answer:
d
Explanation:
It leads to a process called as eutrophication in which the aquatic plants grow regularly over the water surface and the living beings living inside the water gets diminished because of the lack of nutrients and the various substances required for the growth.
What is water sterilization ?It is the process in which the harmful substances and contaminants are removed outside the water source such that the water can be removed out from water resources such that they can be made appropriate for drinking.
An overabundance of various nutrient primarily nitrogen along with phosphorus in water begins a process known as eutrophication. The process hammers the growth of other lives present on the sources.
Algae feed on nutrients, growing, spreading and turning out the water green. Algae blooms smells bad, blocks sunlight and even releases out chemicals in certain cases.
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List and Explain four reasons why soil is so important to human survival.
Answer:
Explanation:
Soil is our life support system. Soils provide anchorage for roots, hold water and nutrients. Soils are home to myriad micro-organisms that fix nitrogen and decompose organic matter, and armies of microscopic animals as well as earthworms and termites. We build on soil as well as with it and in it.
Why do two grams of fat provide a different amount of energy than two grams of carbohydrates? (2-3 sentences)
Answer:
Fats are the slowest source of energy but the most energy-efficient form of food. Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates. Because fats are such an efficient form of energy, the body stores any excess energy as fat.
Explanation:
Which of the following is the most effective public policy in reducing reliance on fossil fuels in the long run?
A. Forging strategic alliances with oil producing nations
B. Investing in renewable fuel technologies
C. Offering business incentives for reducing use
D. Producing more fossil fuels
E. Rewarding reductions in current personal use
Answer:
b
Explanation:
as time goes on it could be possible with new found ways to never again need the fossil fuels
There are different kinds of investment. The option that is the most effective public policy in reducing reliance on fossil fuels in the long run is Investing in renewable fuel technologies.
Renewable energy sources is known to give the best way to fulfill the energy needs of the world. While fossil fuels is known to be soon depleted and therefore renewable energy sources are always there.
It is therefore smart to invest in renewable energy as the capability to store renewable power for use when needed makes it better than alternative to fossil fuels.
Investing in renewable energy stocks is known to helps man in spreading one's wings and can bring about a lot of dividend income.
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Based on the information in the graph, explain what physical process causes the cell to change size.
Answer:
Osmosis
Explanation:
Osmosis is the process in which solvent molecules move from lower to higher concentration through a semipermeable membrane.
When a cell is placed in a hypertonic solution, the cell loses water and moves from higher concentration to lower concentration that is from inside the cell to the water solution and causes shrinking of cell.
Shrinking of cell means decrease in size of the cell along with the passing time and cell loses all its water.
Hence, the correct answer is osmosis.
Vaccines have been subjected to quite a bit of controversy in recent years. Currently, the Centers for Disease Control and Prevention (CDC) recommend that healthy people receive a flu vaccine every year. What are your current perceptions of the flu vaccine? Do you think these recommendations are appropriate? Explain your reasoning.
Answer:
There are many reasons to get an influenza (flu) vaccine each year.
Flu vaccination can keep you from getting sick with flu.
Flu vaccination can reduce the risk of flu-associated hospitalization for children, working age adults, and older adults.
Flu vaccination is an important preventive tool for people with chronic health conditions.
Flu vaccination helps protect women during and after pregnancy.
Flu vaccine can be life-saving in children.
Flu vaccination has been shown in several studies to reduce severity of illness in people who get vaccinated but still get sick.
Getting vaccinated yourself may also protect people around you, including those who are more vulnerable to serious flu illness, like babies and young children, older people, and people with certain chronic health conditions.
Explanation:
Influenza is a potentially serious disease that can lead to hospitalization and sometimes even death. Every flu season is different, and influenza infection can affect people differently, but millions of people get flu every year, hundreds of thousands of people are hospitalized and thousands to tens of thousands of people die from flu-related causes every year. An annual seasonal flu vaccine is the best way to help protect against flu. Vaccination has been shown to have many benefits including reducing the risk of flu illnesses, hospitalizations and even the risk of flu-related death in children.
Flu vaccines helps to reduce the risk of flu-associated illness. And the recommendations made by CDC that healthy people receive a flu vaccine every year is appropriate.
What is flu?"Also called influenza is a viral infection which can be deadly in high risk groups."Flu symptoms include- fever, cough, cold, fatigue, headaches and muscle pain.It causes asthma, pneumonia and chronic diseases.What is flu vaccines?"These are the vaccines that protect against infection by influenza viruses."What is CDC?"It is the National public health agency of the United States."Hence, in order to reduce the disease caused by flu, it is recommended to receive a vaccine.
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Which of the following best describes why polar bears are a sub-species of brown bears instead of a completely separate species?
A. Because they both have thick fur and 4 legs, so they are very similar
B. Because they both live on the same continent, so they can’t be two separate species
C. Because they can still breed in the wild. Once they no longer mate with brown bears, they will be considered a separate species
D. All of the above
Why anaerobic respiration is rapid than aerobic respiration
Answer:
The amount of pressure that is released.
Explanations:
Aerobic respiration is known as a major advantage, base of the amount of energy it releases. Aerobic respiration releases more energy than anaerobic respiration, causing it to become more rapid.
Answer:
Anaerobic respiration is a shorter process than aerobic respiration so a complete cycle of anaerobic respiration is shorter than one of aerobic respiration.
Explanation:
Aerobic respiration involves three stages: glycolysis (the breakdown of glucose into pyruvate), the Krebs cycle (the breakdown of pyruvate into carbon dioxide and hydrogen), and the electron transport chain (hydrogen produced in the Krebs cycle bonding to oxygen to form water).
On the other hand, anaerobic respiration has fewer stages. Anaerobic means 'without oxygen', and so the process takes place without needing any oxygen. In anaerobic respiration, glucose is broken down into pyruvate, just like in aerobic respiration, however due to the lack of oxygen, that pyruvate is broken down into either lactic acid (e.g. in humans), or ethanol (e.g. in yeast). This process is called fermentation, and it doesn't take as long as the Krebs cycle and the electron transport chain, so that's why anaerobic respiration is more rapid than aerobic respiration.
What happens to the volume of a gas if the temperature is
lowered?
The volume will increase.
The volume will decrease.
Answer:
The volume will decrease.
Explanation:
Volume of gas is directly proportional to temperature. So if temperature decrease, volume will also decrease.
(Correct me if I am wrong)
Answer:
the volume will decrease
Explanation:
according to Charles Law, the gas and the temperature is proportional to each other.
also the equation V1÷T1=V2÷T2 proves this claim.
hope this helps
Which is part of the theory of evolution by natural selection?
A. All animals in a population are able to reproduce.
B. Animals have no variation among themselves.
C. Adaptations cannot be passed along to later generations.
D. Small changes add up over many generations.
Answer:
D. Small changes add up over many generations.
Explanation:
It's not A because not all animals in a population can always reproduce. Some may be infertile.
It's not B because genetic variety is something that occurs naturally. Because of genetic variety, random mutations can occur (these mutations later become adaptations).
It's not C because adaptations can be passed down to later generations. These adaptations can lead to natural selection which eventually leads to evolution.
What conditions on Earth enable life to exist?
Answer:
- Earth's gaseous atmosphere (which consists of water vapor, 21% oxygen, 78% nitrogen, .9% argon) The water vapor helps regulate temperature and of course, oxygen is an essential aspect for us to breathe
- The availability of water
- Sunlight
- A constant seasonal cycle (caused by the tilt of the Earth's axis & a perfectly sized moon which maintains the tilt)
What kind of banded rock is formed by cavities in rocks left by gas bubbles?
A. Fossils
B. Marble
C. Agates
Which statement about the light-independent reactions in photosynthesis is true?
Answer:
D) The Calvin Cycle
Explanation:
Calvin cycle refers to the set of chemical reactions taking place in the stroma of the chloroplast in which carbon is fixed into food (glucose). It takes place in light-independent reaction of the the photosynthesis.
Answer:
The answer to this question D.) They comprise the Calvin cycle.
Explanation:
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Indicate whether each source is reliable or unreliable.
a goverment website
a university professor’s personal blog
a commercial website
an online peer-reviewed science journal
Answer:
Reliable
Unreliable
Unreliable
Reliable
Explanation:
Government websites use the domain suffix (.gov) which demonstrates that the information being provided is from the federal government (reliable).
Blogs are not reliable, especially if they are personal (unreliable)
While some commercial websites could be right, some can skew the truth to fit their perspective or lie for financial gain (unreliable)
Peer reviewed science journals provide studies and experiments, and use real examples (reliable)
2 Polnts
Humans and gorillas have one different amino acid in their hemoglobin
sequence. What does this say about the evolution of these two species?
A. Gorillas recently evolved from humans.
B. They have no common ancestors.
C. They probably have
recent common ancestor.
O D. They are probably the same species.
SUBMIT
Answer:
they probably have a recent common ancestor
Explanation:
They probably have recent common ancestor. Therefore, option (C) is correct.
What is evolution?Evolution is the process by which species change over time, usually through natural selection. The theory of evolution is supported by a vast body of evidence from many fields, including genetics, paleontology, and comparative anatomy.
Evolution occurs because of changes in the genetic code of organisms, which can be caused by mutations, gene flow, genetic drift, and natural selection. Over time, these changes can accumulate and result in the development of new species from ancestral forms. Evolution is a slow process that occurs over many generations, and it has been responsible for the incredible diversity of life on Earth, from the simplest bacteria to the most complex animals and plants.
The fact that humans and gorillas have one different amino acid in their hemoglobin sequence suggests that they have a recent common ancestor. This is because the hemoglobin protein plays an essential role in carrying oxygen in the blood and is highly conserved across species that share a common ancestor.
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Which of the following trends show the relationship between deforestation and the Greenhouse Effect?
Water that is in a condensed form can be absorbed through leaves.
True
False
Answer:
True
Explanation:
It can happen but it unlikely in most cases because of the less efficient way. It is more efficient to take it in through the ground
Answer:
True
Explanation:
Most of the costs associated with using renewable resources are due to _______.
a.
overuse of resources
b.
atmospheric pollution
c.
lack of availability
d.
global warming
Please select the best answer from the choices provided
A
B
C
D
Answer:
A
Explanation:
When we overuse resources, even when the are renewable, it can cause damadge to them that can't be repaires. Like killing too many trees in a forest.
Answer:
A
Explanation:
2- What are the primary sources of ionizing radiation ? Give examples of each
Answer:
Ionizing radiation comes from these main sources:
Nuclear reactions in the Earth's sun and stars in space.
Radioactive decay in the body's tissues and in the soil.
Radioactive decay of unstable elements in rocks, especially rocks that contain radium and release radon gas.
Other examples of ionizing radiation include alpha, beta, and gamma rays from radioactive decay.
What does the pulmonary vein do?
O A. Carries carbon dioxide-rich blood from the heart to the lung
O B. Carries carbon dioxide-rich blood from the lung to the heart
O C. Carries oxygen-rich blood from the heart to the lung
O D. Carries oxygen-rich blood from the lung to the heart
Answer:
B, Carries Carbon dioxide-rich blood from the lungs to the heart
Explanation: