Answer:
The correct answer is option C. "ionic bonds happen when valence electrons are transferred between ions".
Explanation:
Ionic and covalent bonding are among the most common chemical bonds that take place to form molecules in nature. One important difference between these two types of bondings are that ionic bonds happen when valence electrons are transferred between ions, while in covalent bonds the valence electrons are shared instead of transferred. This difference makes ionic bonds weaker than covalent bonding.
Which four elements are the primary components of important biological molecules, such as proteins, carbohydrates, and lipids?
The components of poison ivy and poison oak that produce the characteristic itchy rash are catechols substituted with long-chain alkyl groups. consider the structural characteristics of catechols and not the properties of the exposed skin. if you were exposed to poison ivy, which mixture would be best for removal of the alkylcatechol?
Answer:
The correct answer is – wash the affected area with soap, water, and sodium bicarbonate (baking soda)
Explanation:
Soap emulsifies and dissolves the alkyl group of alkylcatechol which is hydrophobic, as it is known that pKa of alkylcatechol is around 8, its -OH group ionizes in a slightly alkaline solution of baking soda (bi carbonate) and makes the compound much more water soluble and relaxes the effect of poison ivy.
Further explanation:
Poison ivy and poison oak are plants that cause itchy rash when they come in contact with an individual. A substance are found in these plants known as urushiol, that is the reason for the rashes.
These substances contains mainly catechols. Catechols of poison ivy contains C17 where as poison oak contains C15 side chains.
Longer the side chains present in the catechols, stronger the reaction will be and tougher to remove or wash them. The alkyl group is hydrophobic so it is not easy to wash it off with water or soap all alone. Bicarbonate solution helps in removing it.
It is believed that characteristic itchy rashes are due to structural properties of catechol than properties of exposed skins. Thus it is needed to dissolve or break the side chain of catechols.
Soap water helps in emulsifying the alkyl catechols and make it dissolve as it is hydrophobic in nature. For washing it more easily, solution of baking soda can be used as it can ionize the -OH group of the catechols which makes it more water soluble.
Learn more:
1. Poison ivy https://brainly.com/question/601145 ( answer by Exvited )
2. use of urushiol https://brainly.com/question/1219325 ( answer by JcAlmighty)
Keywords :
Poison ivy, poison oak, urushiol, catechols, bicarbonate, water, soap, rashes, itchy, alkylcatechols.
Which statement best describes the difference between a physical change and a chemical change? Question 3 options: A physical change produces a new element, and a chemical change results in a bond breaking between atoms. A chemical change results in a new element being formed, and a physical change results in a new compound being formed. A chemical change does not result in a new substance being formed, whereas a physical change does. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.
A physical change can be described as the changes which affect the form of a substance while the chemical composition of the substance remains the same. When a substance undergoes a physical change, the state of matter is changed. A chemical change, on the other hand, can be described as the change which affects the chemical composition of a substance and results in the formation of a new substance.
Hence, the answer is 'A physical change is a change from one state of matter to another; a chemical change results in a new substance formed'.
In a physical change, the state or form of the substance changes without altering the substance itself, while a chemical change forms a new substance with different properties from the original one. The rusting of iron is an example of a chemical change, whereas water boiling or freezing are examples of physical changes.
The best statement that describes the difference between Physical and Chemical Changes is: 'A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.'
In a physical change, the substance itself does not change, but its state or form does.
For instance, water boiling to become steam or freezing to become ice represents a physical change as the water is still water whether it's in a liquid, solid, or gas form.
On the other hand, a chemical change entails the formation of new substances with properties different from the original ones.
A typical example includes the rusting of iron - where iron reacts with water and oxygen to form a new substance, rust, which is distinct from the original iron.
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Hydroelectric power produces electricity using ____.
a. Tidal movement
b. Pressurized
c. Falling water
d. Geothermal
Hydroelectric power produces electricity using falling water. Hence, option (c) is correct.
What is Hydroelectric power?hydroelectric power is a type of energy that uses the force of moving water to produce electricity, such as water running down a waterfall. This force has been utilized by people for ages.
The majority of hydroelectric power plants feature a water reservoir, a gate or valve to regulate the amount of water that flows out of the reservoir, and an outlet or location where the water ends up after flowing downstream. Just before water rushes over the top of a dam or cascades down a hill, it gains potential energy. Water flowing downhill changes potential energy into kinetic energy. When a turbine's blades are turned by water, electricity is produced and sent to the power plant's users.
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A measure of the amount of output produced by a given amount of inputs in a specific period of time is the definition of
A) allocation.
B) productivity.
C) opportunity costs.
D) equilibrium price.
2. Heavy metals that pose health hazards to people and ecosystems occur __________. a. as a by-product of agriculture b. over extended periods of time c. very quickly with tragic results d. all of the above
Answer:
Many of these substances, when eaten, cause serious health problems over time.
Explanation:
yep
This is the study of biological inheritance.
The study of biological inheritance is known as Genetics. It involves the study of genes, DNA, hereditary patterns, gene distribution, variations and alterations in populations.
Explanation:The study of biological inheritance is known as Genetics. Genetics is a sub-discipline of biology which deals with how traits and characteristics are passed from parents to offspring through genes. It includes the study of DNA (deoxyribonucleic acid), which is the molecule that carries genetic information in all living organisms. It also involves the understanding of hereditary patterns, gene distribution, variation, and the alterations within populations over time.
e study of biological inheritance. It focuses on the principles of genetics and how traits are passed down from one generation to another. Inheritance is determined by genes, which are segments of DNA that code for specific traits. These genes can be inherited from both parents and can result in a variety of genetic variations.
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how would you collect accurate and precise crocodile nest data?
To collect accurate and precise crocodile nest data, researchers can use the mark-recapture method along with GPS tracking, and employ non-invasive techniques like camera traps and DNA analysis from collected fecal samples. Establishing random sampling points and using reliable data sources alongside flagging for marker placement are key for obtaining consistent and unbiased data.
To collect accurate and precise crocodile nest data, biologists can employ several methods. The mark-recapture method is a technique where crocodiles are captured, marked with a permanent marker, and then released. The use of GPS coordinates is essential to mark sample points and ensure consistency in the data collection process over time. Non-invasive techniques, such as camera traps and DNA analysis from fecal samples, can also provide valuable information about crocodile populations without physically disturbing the nests or the crocodiles.
It is important to randomly select sampling locations using a random numbers table, ensuring the data is not biased by predetermined choices. Biologists can use a compass to find a bearing and walk a randomly selected distance to establish these sampling points. At each point, detailed habitat data is collected, and then the process is repeated multiple times across various locations.
Additionally, permanent marking of sampling locations with flagging or other markers, while being aware of the potential influence on the environment or the wildlife being studied, is a crucial step towards consistency and reliability in the data collection process. Moreover, combining different methods and cross-verifying data with reliable sources is essential to avoid potential biases and enhance the quality of the data collected.
A bone that contains a diaphysis and epiphyses, a tuberosity near its proximal end, and proportionally more compact than spongy bone is the ________. radius first rib talus clavicle fibula
The bone being referred to in the question, which contains a diaphysis and epiphyses, a tuberosity at the proximal end, and is mainly composed of compact bone, is the radius. The correct answer is radius.
The bone described in the question, a bone that contains a diaphysis and epiphyses, a tuberosity near its proximal end, and is proportionally more compact than spongy bone, is most likely the radius.
The radius is a bone in the forearm that has these characteristics. The diaphysis is the shaft or main part of the bone, while the epiphyses are the end parts.
Proximally, the radius often has a rounded region known as a tuberosity. The radius also tends to have a greater proportion of compact bone than spongy bone.
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Final answer:
The bone mentioned, characterized by having a diaphysis, epiphyses, a proximal tuberosity, and a composition mainly of compact bone, is the long bone known as the radius.
Explanation:
A bone that features distinct structural components such as a diaphysis, epiphyses, a tuberosity, and a composition predominantly of compact bone corresponds to a long bone in the human body. The diaphysis is the long tubular shaft situated between the proximal and distal ends of the bone, while the epiphyses, which are the rounded ends, are found at each end of the bone and typically filled with spongy bone and red marrow. In this case, where a tuberosity is near the proximal end, and there is a larger proportion of compact bone relative to spongy bone, the correct answer identifying the bone described is the radius.
The radius is one of the long bones in the human arm, partnered with the ulna, and is essential for the forearm's range of movement. The structural hallmark of the radius that sets it apart from other bone options listed - such as the first rib, talus, clavicle, or fibula - is its significant amount of compact bone and the presence of a tuberosity near the proximal end, which aligns with the characteristics mentioned in the question.
How does brandt define literacy sponsor? what are the characteristics of a literacy sponsor?
Which tools measure the volume of liquid? Check all that apply.
a graduated cylinder
a meniscus
a pipette
a beaker
an electronic balance
a caliper
Answer: a graduated cylinder, a pipette , a beaker
Explanation:
The volume of the liquid can be define as the space that a liquid acquires in rest or in a container. It depends upon the shape of the container. It is expressed in terms of cubic centimeters, liters and milliliters.
Among the options given, a graduated cylinder, a pipette and a beaker can be used for measuring the volume of the liquid. This is because of the fact that all of them exhibit a scale on their outer walls which helps in measuring the accurate volume of the liquid poured in the instrument.
As the ________ of the environment increases, the resources become hard to obtain.
Psychologists need to decide how they will the phenomenon they are interested in so that they can describe that phenomenon
A lily plant on a pond is an example of which food chain level? A. primary consumer B. decomposer C. producer D. 3rd tier consumer
As a plant grows, the stem often becomes thickened and somewhat woody since it is responsible for supporting the upper branches and leaves. Cells in this area of the plant develop
thickened cell walls
Cells in the stem, needed for support, develop thickened cell walls. These specialized cells are called collenchyma cells.
Binary fission is a type of cellular reproduction in which a cell divides into
Two identical copies of itself - Apex :)
Two pairs of arteries supply the brain. they are: ________.
The two pairs of arteries that supply the brain are the anterior communicating artery and the posterior cerebral arteries.
Explanation:The two pairs of arteries that supply the brain are the anterior communicating artery and the posterior cerebral arteries. The anterior communicating artery is an anastomosis of the right and left internal carotid arteries and supplies blood to the brain. The posterior cerebral arteries form part of the posterior portion of the arterial circle, also known as the circle of Willis, and supply blood to the brain.
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According to descartes what do animals and the human body have in common
According to Descartes, animals and humans have things in common and the things that they have both in common in which he had noted is the structures that they have in their body such as having blood, spirit, nerves, muscles, bones and other organs. He also adds that they have movements in which both they have in common.
A client with cancer is diagnosed with typhitis. which emergency intervention would the nurse perform?
Final answer:
In an emergency situation involving a cancer patient diagnosed with typhitis, a nurse would provide fluid resuscitation, stability monitoring, administration of intravenous antibiotics, and potentially prepare the patient for surgery if complications like bowel perforation are suspected.
Explanation:
The question is focused on a cancer patient who is diagnosed with typhitis, a serious infection of the cecum which can lead to potentially life-threatening complications like bowel perforation. In an emergency situation, initial interventions would typically focus on stabilizing the patient, which may include fluid resuscitation and monitoring of vital signs to counteract potential sepsis. Interventions would also likely include immediate administration of broad-spectrum intravenous antibiotics to target the infection, as well as the use of imaging studies, such as a CT scan to confirm the diagnosis and assess for complications. If the patient is hemodynamically unstable or if there is evidence of complications like bowel perforation, the patient may require emergency surgery. It's critical to initiate treatment promptly due to the risk of rapid deterioration.
Matching: Match the trace element with the function.
A. Magnesium B. Iron C. Zinc
____ 11. helps hemoglobin carry oxygen
____ 12. part of the enzyme that maintains acid balance in your stomach
____ 13. found in chlorophyll
Our customers dogs have many different dietary needs, such as low-protein foods for kidney disease, and some of our customers simply prefer special diets like all-meat foods. therefore, we order food from a lot of vendors. how can we make sure we always have enough of the right food on hand and get the best prices?
The amygdala is the brain region that is most often called into action under situations of
A substance that yields a cation plus the hydroxyl ion in water is a(n)_____.
salt
acid
base
Which psychiatrist believed the environment was more important to a child's intellectual development than biology? A. B. F. Skinner B. Jean Piaget C. Lev Vygotsky D. Sigmund Freud
Lev Vygotsky believed the environment played a key role in a child's intellectual development, emphasizing cultural and social factors as pivotal in the learning process.
The psychiatrist who believed the environment was more important to a child's intellectual development than biology was Lev Vygotsky. While other theorists, like Jean Piaget and Arnold Gesell, acknowledged the role of biology to some extent, Vygotsky emphasized the cultural and social factors as crucial elements in cognitive development. Unlike B. F. Skinner, who focused on behavioral aspects, or Sigmund Freud, who focused on psychoanalytic aspects, Vygotsky's theory posited that children learn actively through hands-on experience and that their learning is inherently a social process. Therefore, the knowledge they gain is greatly influenced by the culture and environment in which they are raised.
1. Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills
Human activities that majorly impact the biochemical cycling are pollution through extraction of fossil fuels. The burning and use of these fuels also impacts the whole process of the cycling. Causing the processes to occur rapid disrupting the whole cycle. As far as Cultural eutrophication goes the pollution created by the use of fossil fuels and also the use of fertilizers are then put into our water system. The water then inevitably goes into our lakes and streams causing mass fish kills and water pollution.
A client being evaluated in the emergency room is unable to speak logically or follow directions. the client’s family states the client has been under a great deal of stress for about 6 months. the client is most likely experiencing:
Suppose that a patient is diagnosed with new disease caused by build up by the waste material in the body's cells which organelle is most likely malfunctioning in patients cells
Agustín Iturbide was _____.
Answer:
a Creole Royalist general
Explanation:
I'm not sure if this is the correct answer
Do you find Dr. Natterson-Horowitz's argument that physicians can learn a lot from veterinarians convincing? What part of her argument is, to you, especially strong or weak?
What are the building blocks of minerals?
a. rocks
b. elements
c. isotopes
d. electrons