In living organisms, the ratio of the naturally occurring isotopes of carbon, C-12 to C-13 to C-14 is fairly consistent. When an organism such as a woolly mammoth died, it stopped taking in carbon, and the amount of C-14 present in the mammoth began to decrease. For example, one fossil of a woolly mammoth is found to have 1/32 of the amount of C-14 found in living organisms. Identify the type of nuclear reaction that caused the amount of C-14 in the woolly mammoth to decrease after the organism died.
Answers
One fossil of a woolly mammoth is found to have 1/32 of the amount of C-14 found in living organisms therefore the type of nuclear reaction that caused the amount of C-14 in the woolly mammoth to decrease after the organism died is referred to as beta decay reaction.
What is beta decay?This is referred to as a type of radioactive decay in which a beta ray is emitted from an atomic nucleus and the equation can be seen below:
¹⁴₆C→ ¹⁴₇N + ⁰₋₁e
This is also characterized by he proton in the nucleus being transformed into a neutron and vice versa. For example if a proton is converted to a neutron, it is known as β+ decay while if a neutron is converted to a proton, it is known as β– decay which is therefore the reason why it was chosen as the correct choice.
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Related Questions
Without the influence of other forces, particles naturally flow from areas of what ?
Answers
Answer:
Influence of masks on expiratory particles and flow, and associated wearing suggestions. All types of masks can reduce the front flow, but air leakage in other directions can occur when wearing surgical and handmade masks.
Or pressurized areas to non-pressurized areas.
Answer:
From areas of high concentration to areas of low concentration.
Circulatory Respiration Digestion Skeletal Muscular Nervous Urinary Immune Reproductive a) Breaks down food into molecules which are used for energy and development. Integumentary Endocrine b) Includes bones, as well as ligaments and cartilage, which are connecting tissues. 20 MAML f) Protect the body from infection and injury. c) Make and transport sperm and egg, and enable the female to give birth. d) Exchanges oxygen and carbon dioxide between the lungs and the atmosphere. e) Includes three types of muscle tissues that provide movement for the body.
Answers
Explanation:
Circulatory - d) Exchanges oxygen and carbon dioxide between the lungs and the atmosphere.
Respiration - d) Exchanges oxygen and carbon dioxide between the lungs and the atmosphere.
Digestion - a) Breaks down food into molecules which are used for energy and development.
Skeletal - b) Includes bones, as well as ligaments and cartilage, which are connecting tissues.
Muscular - e) Includes three types of muscle tissues that provide movement for the body.
Nervous - The nervous system is not listed in the options provided.
Urinary - Urinary system is not listed in the options provided.
Immune - f) Protect the body from infection and injury.
Reproductive - c) Make and transport sperm and egg, and enable the female to give birth.
describe how impulse are transmitted across a synapse
Answers
A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.
What are the impulse?Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.
The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.
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PLEASE HELP:( decreasing temperature concentration or surface area will ____ reaction rate.
A. decrease
B. Have no effect on
C. Increase
Answers
Answer:
It's C I believe
Pls lemme know if it was right :)
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. Allele D produces tall plants and is dominant to d for short plants, and allele R produces round fruit and is dominant to r for oval fruit. The expected percentages of progeny phenotypes are listed below:
tall oval = 41%
short round = 41%
tall round = 9%
short oval = 9%
(a) What proportion are expected to be tall and produce round fruit?
Answers
In a diploid plant species, the proportion of progeny expected to be tall and produce round fruit is 32%.
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. The expected percentages of progeny phenotypes are tall oval = 41%, short round = 41%, tall round = 9%, and short oval = 9%.To determine the proportion of progeny expected to be tall and produce round fruit, we need to consider the alleles for each trait. Allele D produces tall plants (dominant) and allele d produces short plants (recessive). Allele R produces round fruit (dominant) and allele r produces oval fruit (recessive).From the given percentages, we can deduce that tall ovals and short ovals combined make up 9%. Since tall oval is 41% and short oval is 9%, the proportion of progeny expected to be tall and produce round fruit is 41% - 9% = 32%.Therefore, the proportion of progeny expected to be tall and produce round fruit is 32%.For more questions on diploid plant
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How can humans reduce the number of landfills?
Answers
Explanation:
not pollute duh it's like common sence
Answer:
produce less trash
Explanation:
took the test already
Bacterial and archaeal ribosomes are known as _____ ribosomes, based on their sedimentation coefficient.
A. 50S
B. 30S
C. 80S
D. 70S
Answer: 70S
Answers
70S ribosomes are the ribosomes found in bacteria and archaea.
The Archaea are a group of creatures that were formerly assumed to be bacteria (thus the term "archaebacteria") owing to their physical similarities. More accurate genetic study demonstrated that Archaea are unique from both Bacteria and Eukaryotes, giving them their own domain in Woese's Three Domain Classification, alongside the Eukarya and Bacteria.
The majority of them are unicellular, have 70S ribosomes, are a few micrometers in size, and reproduce asexually exclusively. They have many of the same structures as bacteria, including as plasmids, inclusions, flagella, and pili. Capsules and slime layers have been discovered, although they appear to be uncommon in archaea.
While archaea were first separated from severe conditions such as regions high in acid, salt, or heat, earning them the nickname "extremophiles," they have more recently been isolated from all bacteria-rich habitats such as surface water, the ocean, human skin, soil, and so on.
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g You can find the results of the seedling experiment hereLinks to an external site.. Carry out the hypothesis test that you have identified in the previous problem; which is closest to the p-value that you obtain?Group of answer choices0.040.080.090.61
Answers
Answer:
0.080
Explanation:
The seedling experiment is the mobilization of reserves during the seed experiment. Development of embryo exist in the seedling. When the test is carried out the p-value obtained is near to 0.781 which is approximately 0.080. The calculation is 10 * 0.07 / 8.75 after solving the equation which we get is 0.080.
one way in which stigma is adapted for reproduction in plants
Answers
Answer:
In a flower, this landing zone and entrance is the stigma. It plays a pivotal role in reproduction. Most stigmas are adapted to trap pollen with hairs, flaps and other surfaces to increase their efficiency. Most stigmas are covered with a waxy, sticky substance.
What are 2 similarities chromosomes you get from parents
Answers
The two similarities between chromosomes that you get from your parents are Genetic Material and Number of Chromosomes.
What more should you know about genetic materials and number of chromosomes you get from parents?In terms of Number of chromosomes: Every Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. Each parent contributes 23 chromosomes to their child, for a total of 46.
in tems of Genetic material: The chromosomes that you get from your parents contain the same genetic material. This is why you look like your parents and why you have inherited some of their traits.
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Which energy reactions occur in eukaryotic cells and are exact opposites of each other?
Answers
Answer:
Cell respiration and photosynthesis
Explanation:
In photosynthesis, organisms make high-energy compounds (glucose for example) by using carbon dioxide (CO2) and produce oxygen. In cellular respiration, organisms breakdown glucose and other compounds through consuming oxygen and produce CO2.
A week bond between two hydrogen molecules;found between water molecules and nucleotides in DNA
Answers
Answer:The weak bond between two hydrogen atoms, which is commonly found between water molecules and nucleotides in DNA, is called a hydrogen bond.
Explanation:
Answer: Hydrogen Bond
Explanation:
Which of following does not describe a common reason people immigrate? (4 points)
Drought in the area
To avoid conflict or war
New job opportunities
More housing options
Answers
More housing options does not describe a common reason people immigrate.
A root cause is the essential motive for the incidence of an event, on this case, immigration. Often, withinside the migration context, there are each push and pull elements with push elements being motives why humans could need to go away their domestic united states and pull elements being motives why humans could need to return back to a brand new united states. In migration, push and pull elements may be economic, environmental, social and political.
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PLEASE HELP FAST!
Raising livestock and burning trash are two examples of human activities that have an impact on water resources. Select one and construct an argument about whether its effect on water resources is positive or negative. Support your answer with evidence and reasoning
Answers
Answer: Negative Effect of Raising Livestock on Water Resources:
Raising livestock contributes to water pollution. According to the United States Environmental Protection Agency (EPA), animal waste is a significant source of water pollution. When animal waste is not adequately managed, it can contaminate nearby water sources, leaving harmful bacteria and nutrients that can impact aquatic life and human health. The EPA estimates that animal feeding operations produce over 500 million tons of manure per year, which is three times the amount of human waste in the United States.
Moreover, raising livestock involves the use of water resources. The amount of water that livestock requires varies depending on many factors such as animal type, weather conditions, and feed production. According to the Food and Agriculture Organization (FAO), raising a cow requires 9900 gallons of water, while raising pigs and chickens requires 700 and 4300 gallons of water, respectively. This creates a significant strain on water resources, especially in areas that already face a water scarcity issue.
Furthermore, raising livestock also contributes to the degradation of riparian habitats. Riparian habitats are those that exist along the banks of rivers and streams. These habitats play an essential role in stabilizing the banks of rivers, filtering pollutants, and providing a natural habitat for aquatic life. However, raising livestock near these areas can result in the trampling of habitats, the destruction of vegetation, and the accumulation of manure. This can lead to erosion, loss of biodiversity, and reduced water quality.
Conclusion:
In conclusion, raising livestock has a negative effect on water resources. By polluting water sources, using significant amounts of water resources, and contributing to the degradation of riparian habitats, the environmental impact of raising livestock poses a significant threat to aquatic life and human health. Unless farming practices are regulated, and best practices are implemented, raising livestock will continue to pose a severe risk to water resources.
Explanation: I don't need one * don't delete my answer cause its not that complicated!!*
verification of the success of an autoclave run is measured by blank . multiple choice question. including bacterial cultures in the run and testing viability following the run including bacterial endospores in the run and testing their viability following the run including indicator tape on materials in the run and examining its color following the run
Answers
Verification of the success of an autoclave run is typically measured by including indicator tape on materials in the run and examining its color following the run.
Indicator tape contains heat-sensitive chemicals that change color when exposed to high temperatures. The tape is typically placed on the outside of materials, such as laboratory glassware or medical equipment, that are being sterilized in the autoclave. After the autoclave run is complete, the tape is examined for a change in color, indicating that the materials have been exposed to sufficient heat and pressure to effectively sterilize them.
While including bacterial cultures or bacterial endospores in the autoclave run and testing their viability following the run can also be used to verify the success of the sterilization process, these methods are not as commonly used as indicator tape. These methods are typically reserved for situations where a higher level of sterility assurance is required, such as in the production of medical devices or pharmaceuticals.
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Describe the basic characteristics of a photosystem and explain the difference between Photosystem I and Photosystem II.
Answers
Answer:
Photosystem I (PS I) and photosystem II (PS II) are two multi-subunit membrane-protein complexes involved in oxygenic photosynthesis. ... The main difference between photosystem 1 and 2 is that PS I absorbs longer wavelengths of light (>680 nm) whereas PS II absorbs shorter wavelengths of light (<680 nm).
Explanation:
The brain and spinal cord are part of the _______ nervous system. The electrical charges that act as nervous signals are called _______. Jellyfish do not have a brain. Instead their nervous system is called a _______. After nervous systems began to develop in bilaterally symmetric animals, some developed ventral, or front, nerve cords, while chordates developed _______ nerve cords. Skeletons that allow for movement by using muscles and squeezing liquid to change the body shape are called _______ skeletons. _______ do not grow with arthropods, and so occasionally must be shed and regrown from chitin. Muscles move endo- and exoskeletons by _______. _______ is the joining of two gametes called sperm and egg. A fish that lays her eggs in a cluster is initiating _______ fertilization. _______ are an adaptation by reptiles to allow for reproduction and embryo development on land. Describe three different strategies used by three different animals to thermoregulate. If you see a snake coiled up in a sunny patch of grass, what can you probably conclude about the type of thermoregulator it is. Why?
Answers
The brain and spinal cord are part of the central nervous system.
The electrical charges that act as nervous signals are called action potentials or nerve impulses.
Jellyfish do not have a brain. Instead, their nervous system is called a nerve net.
After nervous systems began to develop in bilaterally symmetric animals, some developed ventral nerve cords, while chordates developed dorsal nerve cords.
Skeletons that allow for movement by using muscles and squeezing liquid to change the body shape are called hydrostatic skeletons.
Exoskeletons do not grow with arthropods, and so occasionally must be shed and regrown from chitin.
Muscles move endo- and exoskeletons by contracting and relaxing.
Fertilization is the joining of two gametes called sperm and egg.
A fish that lays her eggs in a cluster is initiating cluster or mass fertilization.
Amniotic eggs are an adaptation by reptiles to allow for reproduction and embryo development on land.
Describe three different strategies used by three different animals to thermoregulate.
Elephants: Elephants thermoregulate by using their large ears as cooling devices. They flap their ears to increase surface area and enhance heat loss through evaporative cooling.Desert Lizards: Desert lizards employ behavioral thermoregulation by basking in the sun to absorb heat and warming their bodies. They also retreat to shade or burrows to avoid excessive heat when needed.Penguins: Penguins have a unique thermoregulation strategy. They huddle together in large groups to conserve body heat and shield themselves from the cold Antarctic winds, effectively reducing heat loss and maintaining body temperature.If you see a snake coiled up in a sunny patch of grass, what can you probably conclude about the type of thermoregulator it is. Why?
If you see a snake coiled up in a sunny patch of grass, you can probably conclude that the snake is an ectotherm. Ectotherms rely on external heat sources, such as the sun, to regulate their body temperature. By basking in the sun, the snake absorbs heat, which helps raise its body temperature to a suitable level for proper physiological functioning.
Answer:
1. central
2. action potential
3. nerve net
4. dorsal
5. hydrostatic
6. Exoskeletons
7. contraction/contracting
8. Fertilization
9. external fertilization
10. Eggs
11. Animals with fur thermoregulate by panting. Winged birds will flap against their mouths/heads to dissipate heat. Humans will produce sweat to evaporatively cool. Polar bears have developed blubber. Bears drop body temperatures during hibernation.
12. Seeing a snake using the warmth of the sun leads us to conclude that it is likely a thermo conformer that cannot produce its own body heat.
can someone please help me solve this
Answers
Answer:
One thing missing would be the units of the rates and measurments
The independent variable is the light intensity and the dependent is the rate of photosynthesis
Explanation:
TIME REMAINING
53:27
A student conducted a comparative investigation to test the hypothesis that different areas of New York City have
different levels of air pollution.
Which is a likely benefit of this comparative investigation?
It provides her with a large amount of information about air pollution in New York City,
It provides her with results that are valid for a long time.
It requires that she observe a limited number of variables.
It allows her to learn about the causes and effects of air pollution in major cities.
Mark this and return
Save and Exit
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Submit SCIENCE
Answers
Answer:
It provides her with a large amount of information about air pollution in New York City
Explanation:
I think
Answer:
A: It provides her with a large amount of information about air pollution in New York City
Explanation:
Indeed i am taking it right now
Is crick and Watson a type of genetic test
Answers
No, "Crick and Watson" is not a type of genetic test. Crick and Watson refer to James D. Watson and Francis Crick, who were scientists involved in the discovery of the structure of DNA. They proposed the double-helix structure of DNA in 1953, which provided the foundation for understanding genetic information and its role in heredity.
Genetic tests, on the other hand, are laboratory tests that analyze an individual's DNA or genes to provide information about their genetic makeup, potential genetic disorders, or predispositions to certain conditions.
These tests can be used for various purposes, such as diagnosing genetic disorders, predicting the risk of developing certain diseases, determining carrier status for genetic conditions, or providing ancestry and genealogical information.
While Crick and Watson made significant contributions to the field of genetics, they are not directly associated with genetic testing. Genetic tests are based on scientific advancements and technologies developed after their groundbreaking discovery of the DNA structure.
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in which biome are minerals in the soil most rapidly depleted
Answers
Answer:
Boreal forest is among the largest terrestrial biomes on earth in which minerals in the soil most rapidly depleted.
Check all reasons that you mentioned.
Germs are living things and may not survive
the transaction.
Just because people meet does not mean
that they will make contact.
An uninfected person may be able to fight off
the infection before getting sick and passing
it on to others.
Answers
Germs are those organisms that can cause diseases.
What are germs?The term germs have to do with the harmful pathogenic organisms that are able to cause diseases in the bodies of individuals.
The following are true about germs;
An uninfected person may be able to fight off the infection before getting sick and passing it on to others.Just because people meet does not mean that they will make contact.Learn more about germs:https://brainly.com/question/9594756
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One difference between weather and climate is that
weather is the day-to-day conditions, and climate is the conditions expected over relatively long periods of time
climate is the day-to-day conditions, and weather is the conditions expected over relatively long periods of time
weather is localized, and climate cours over large areas.
climate is localized, and weather cours over large areas.
SUBMIT ANSWER
ASK FOR HELP
Answers
After entering the sympathetic chain, preganglionic nerve fibers may do which of the following? Select all that apply.
-move up or down the chain and synapse in ganglia at other levels
-immediately synapse with postganglionic fibers
-pass through the sympathetic chain without synapsing, forming splanchnic nerves
-directly synapse with effector cells
Answers
According to the given statement pass through the sympathetic chain without synapsing, forming splanchnic nerves.
What are preganglionic nerve ?Preganglionic nerve fibers that link to parasympathetic nerve fibers in the pancreatic ganglia postganglionic the pancreas. The cholinergic system's nerve cells promote the release either glucagon and insulin. Acetylcholine serves as the main neurotransmitter of the parasympathetic nervous system.
Where do the preganglionic fibers travel on the nerve?Preganglionic fibers are the ones that go from the central nervous system to the ganglion in the autonomous nervous system. Primary afferent fibers are all cholinergic (i.e., they employ acetylcholine as a messenger) and myelinated, whether they are located in the sympathetically or parasympathetic divisions.
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explain the four levels of protein structure
Answers
Answer:
There are four levels of protein structure which includes primary, secondary, tertiary, and quaternary.
Explanation:
Primary structure establishes the sequence for amino acids which are the building blocks of proteins.
Secondary structure focuses on sub-structure within a polypeptide chain.
The tertiary structure describes monomeric and multimeric molecules of protein in a three-dimensional structure.
The quaternary structure describes the macromolecule of a protein formed through combination of various polypeptide chains.
Lipase from the pancreas and bile
V from the liver are needed for the
digestion of fats.
True or false
Answers
Answer:
True
Explanation:
The liver makes bile, which helps the body absorb fat.
the liver makes bale
Select the correct location on the image.
Which part of the image shows a reproductive structure that forms offspring that are genetically distinct from its parents?
btw the pic is a strawberry plant
Answers
Answer: I think it may be the flower.
Explanation: I'm not completely sure but I know the flower is part of the reproductive system in plants. I believe it is the female part because the male has to do something with pollen.
Which of these characteristics BEST describes a difference between eukaryotic and prokaryotic cells?
A Eukaryotic DNA has deoxyribose, and prokaryotic DNA has ribose
B Eukaryotic DNA is free floating in the cell, and prokaryotic DNA is in a nucleus C Eukaryotic cells reproduce asexually, and prokaryotic cells reproduce sexually D Eukaryotic cells are usually larger and more complex than prokaryotic cells
Answers
Answer: c
Explanation:
Whiplash Case Study The patient is a 52 -year-old white male retired RN height: 5'9" weight: 190lbs. who was diagnosed as having a hairline fracture of the right greater tuberosity of the humerus in 2006 which necessitated the use of a sling as well as rehabilitation. In 2014 the patient was in a car accident and was diagnosed with whiplash. The patient displayed an elevated and upwardly rotated right shoulder, both of which may indicate cervical dysfunction as several of the cervical structures have attachment sites along the clavicle, on the first rib, and the on the scapula.
Please answer the following questions (1 sentence per item) after reading your case study and discussing it with your peers (clinical thinking):
Area of the body affected (anatomy)
Tissue involved (anatomy)
Possible issues affecting the area of the body or organ system (physiology)
Possible pathology (diagnosis)
Medical approach required to manage the condition (treatment)
Answers
Answer:
Area of the body affected (anatomy): The patient's right shoulder and cervical region.
Tissue involved (anatomy): The patient has a hairline fracture of the right greater tuberosity of the humerus and cervical dysfunction.
Possible issues affecting the area of the body or organ system (physiology): The patient's elevated and upwardly rotated right shoulder and cervical dysfunction may indicate muscle spasm, nerve impingement, or joint restriction.
Possible pathology (diagnosis): The patient may have a whiplash injury, cervical strain or sprain, or a cervical radiculopathy.
Medical approach required to manage the condition (treatment): The patient may require physical therapy, medications for pain management, and in some cases surgical intervention.
Scientific question – Yes or No? ARE THE QUESTIONS BELLOW SCEINTIFIC PLEASE TYPE YES BESIDE THEM IF THEY ARE SCEINTIFIC AND PLEASE SPECIFY THE OTHERS THAT ARE NOT SCEINTIFIC QUESTIONS AND TYPE BESIDE THEM NO THANK YOU
What is the effect of cigarette smoke on lungs?
Why is blue the best color in the world?
Did the grass turn brown because it needs fertilizer?
What is the effect of ‘study-time’ on test grades?
Why is basketball a boring sport?
Are cows faster than pigs?
Answers
Answer:
What is the effect of cigarette smoke on lungs? yes
Why is blue the best color in the world?
no
Did the grass turn brown because it needs fertilizer
yes
What is the effect of ‘study-time’ on test grades
no
Why is basketball a boring sport?
no
Are cows faster than pigs?
no