How would replacing the aluminum core of an electromagnet with an iron
core affect the electromagnet?
OA. It would become stronger.
OB. It would become weaker.
C. Its strength would vary randomly.
D. Its strength would stay the same.
Replacing the aluminum core of an electromagnet with an iron core would make it to become a stronger electromagnet.
What is an electromagnet?An electromagnet refers to a magnet that is produced by electromagnetic induction. The core of an electromagnetic determines the overall strength of the electromagnet.
Since aluminum is a weaker magnet than iron, replacing the aluminum core of an electromagnet with an iron core would make it to become a stronger electromagnet.
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Compare and contrast the cell structures / organelles found in plant and animal cells.
list 3 organelle/structures plant and animal cells have that are the same
list 2 organelles/structures plant and animal cells have that are different
Be sure to write using complete sentences.
Answer:
3 Common structure found in both plant and animal cell:
NucleusCell MembraneMitochondria .3 different structures of plant and Animal cell:
Centrosome (Animal cell)Lysosomes (Animal cell)Cell Wall (Plant Cell)g Wilderness ecosystems are dynamic, complex, and often fragile, and may be impacted by human use and activities occurring both within and outside wilderness boundaries. Group of answer choices True False
The given statement "wilderness ecosystems are dynamic, complex, and often fragile, and may be impacted by human use and activities occurring both within and outside wilderness boundaries," is true.
Wilderness ecosystems
The wilderness ecosystem is the ecosystem that has been left undisturbed by humans. There are many areas on the planet that are considered wilderness such as the Great Barrier Reef, the Amazon forest, etc. They are rich in both flora and fauna diversity.
In the United States, a total of 42× [tex]10^{4}[/tex] ha is under the protection of the National Wilderness Prevention System. They are the lands devoted to the protection of the natural ecosystem. Such an arrangement had to be made due to human encroachment and various other factors that affect the wilderness ecosystem. The main threats to the wilderness ecosystem are
Using the land for recreational usesGrazing by livestockForest firePollutionGlobal warmingInvasion of alien speciesThe unnatural flow of water due to diversions, dams, impoundments, etc.Learn more about ecosystems here:
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Kapoor 2014. Effect of orthodontic forces on cytokine and receptor levels in gingival crevicular fluid: A systematic review.
The publication about the effect of orthodontic forces on cytokine and receptor levels in gingival fluid investigates how this treatment can increase inflammation.
What are cytokines?Cytokines are molecules of the immune system that act during different types of immune responses, especially in inflammatory pathways.
Cytokines are mainly secreted by helper T immune cells (T cells) and macrophages.
In this case, the publication above mentioned uses different cytokine biomarkers to test inflammatory responses after orthodontic treatment (e.g., IL-1β, TNF-α, IL-8, etc).
In conclusion, the publication about the effect of orthodontic forces on cytokine and receptor levels in gingival fluid investigates how this treatment can increase inflammation.
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What are the products of the electron transport chains within the light reactions?
ATP and NADPH
The light reactions of photosynthesis occur in the thylakoid membranes of the chloroplast. Electron carrier molecules are arranged in electron transport chains that produce ATP and NADPH, which temporarily store chemical energy
What is Electron transport chains in Photosynthesis ?
The electron transport chain is a series of four protein complexes that couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation.
It occurs in mitochondria in both cellular respiration and photosynthesis.The primary task of the last stage of cellular respiration, the electron transport chain, is to transfer energy from the electron carriers to even more ATP molecules, the "batteries" which power work within the cellLearn more about Electron transport chain here:
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which molecules are the smallest one here: starch, protease, protein, simple sugars
Answer:
simple sugars
Explanation:
simple sugars are relatively small molecules (eg. glucose) and as such can pass through membranes via simple diffusion.
The main dietary factor associated with elevated blood cholesterol is?
The main dietary factor associated with elevated blood cholesterol is saturated fat.
What about saturated fat?Because they increase the amount of LDL cholesterol in our blood, saturated fats, sometimes known as "bad fats," increase the risk of cardiovascular disorders (including heart disease and stroke). Cholesterol that is circulated in the blood. The majority of this cholesterol is produced by the body, however some is also absorbed from the meals you eat. Even if they include fat, foods derived from plants never contain cholesterol.Only foods from animals do. Low density lipoproteins are able to transport cholesterol. Dietary fat, particularly saturated and trans fats, may increase LDL and total cholesterol levels in the blood. Blood cholesterol levels may be lowered by substituting polyunsaturated and monounsaturated fats, particularly olive and canola oil, for some saturated fats.When we consume too much saturated fat, the receptors stop functioning as effectively, and blood cholesterol levels rise.Learn more about saturated fat here:
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Why does the land around an once active coal mine remain barren?
Answer:
The ground where the coal was mined is acidic so few plants can grow there.
Explanation:
Usually, the ground surrounding the coal that is mined has a low pH.
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The grape-like out-pouchings located at the ends of the respiratory bronchioles are called?
According to the research, the correct option is alveoli, the grape-like out-pouchings located at the ends of the respiratory bronchioles are called alveoli.
What are alveoli?They are the terminal diverticula of the bronchial tree, that is, they are the grape-like out-pouchings located at the ends of the bronchioles, in which gas exchange takes place between the air that was inhaled and the blood.
That is, these are similar to bags, where the body manages to get the oxygen it needs for its operation and through the same opening, the gases enter and leave the pulmonary alveoli.
Therefore, we can conclude that according to the research, the correct option is alveoli, the grape-like out-pouchings located at the ends of the respiratory bronchioles are called alveoli.
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Basil metabolism is responsible for what percentage of calories used by the body?.
The basal metabolism is responsible for 60% of calories used by the body.
Basal metabolism can be defined as the rate of energy usage by the body at a state of rest. This metabolism is essential to maintain vital functions of the body. These vital mechanisms include functions like cellular respiration, breathing, blood circulation and pumping of the heart. These functions include mechanisms of the body that are mostly involuntary. The maximum energy expenditure of of the body occurs while the body undergoes basal metabolism. Basal metabolism rate is a trait which is flexible and does not require monitoring by other systems in the body. Basal metabolism is also responsible for the maintenance of homeostasis in the body. Basal metabolism uses calories stored in the body to carry out vital functions.
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If the planet was attacked by a disease that caused people to lose the use of their frontal lobes, one way people might be affected is they may
If the planet was attacked by a disease that caused people to lose the use of their frontal lobes, one way people might be affected is they may lose their self awareness.
What is Brain?
This is an organ which is located in the head region and comprises of rich network of neurons which are enclosed in the cranium. It serves as the control center of the central nervous system and has different types of lobes such as frontal etc with unique functions.
The frontal lobe is located in the anterior part of the brain and is responsible for different types of voluntary movements and cognitive functions such as interaction, self awareness etc.
This is therefore the reason why frontal lobe was chosen as the most appropriate choice.
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Which three statements provide reasons that scientists are considering renewable sources of energy?
These are the three explanations that give reasons that scientists are considering renewable source of energy:
1. Renewable sources are assets implies they are old and reliable sources.
2. Most renewable sources are effectively accessible in nature.
3. Renewable resources are cost-effective in contrast with non-renewable resources.
A renewable energy source implies energy that is feasible, that can't run out, or is unending, similar to the sun. It is additionally named 'alternative energy'. These assets are fit for recovery. The recovery of these sources includes a few biological cycles on a time scale. Sun, water, air, and heat from the earth are sustainable sources that we can use to make solar-based, tidal, wind, and geothermal energy. Renewable energy is additionally called green or eco energy.
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The middle pleistocene and the late pleistocene correspond to which cultural periods?
The middle stone age and the later stone age corresponds to the middle and the late pleistocene.
Cultural evolution during the middle and the late pleistocene :-
In southwestern Asia as well as northern and southern Africa, personal ornaments in the form of perforated seashells are recorded from the early Late Pleistocene. In the Old World, Neanderthals and anatomically modern humans are linked to a range of personal ornamentation by about 40,000 years ago (Ka). These include fully created ornaments as well as organically modified things. The appearance of figurative art, mythical imagery, and other types of items, like as musical instruments, at various times in history suggest that completely modern behavior began to emerge more gradually towards the middle of the Late Pleistocene and most definitely no later than 40 Ka. Many, but not all, of the lengthy and rigorous history of study might well have helped to the relevant data come from Europe.
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The ability of cardiac muscle cells to contract spontaneously without a stimulus from a nerve source is called:______
The ability of cardiac muscle cells to contract spontaneously without a stimulus form a nerve source is called Automaticity. It is a ability to contract without direct stimulation by nervous system.
Cardiac muscle cells has special characteristic which called automaticity , allows cardiac muscle cell to contract spontaneously without a stimulus form a nerve source. Property of cardiac cells to generating spontaneous action potentials.
Automaticity is to do things without occupying the mind with the low level details required to become an automatic response habit. Learning , repetition and practice is the resultant. It is fundamental physiological function in organisms to initiated by specialized populations of cardiac cells.
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He surgery for a client scheduled for an 8:00 a.m. procedure is delayed until 11:00 a.m. what is the appropriate nursing action regarding administration of preoperative prophylactic antibiotic?
He surgery for a client scheduled for an 8:00 a.m. procedure is delayed until 11:00 a.m. The appropriate nursing action regarding administration of preoperative prophylactic antibiotic is to adjust the administration time to be given at 10:00 a.m.
The preoperative patient's reports should be made before the surgery like reports of pertinent cardiovascular and respiratory findings (like chest pain, irregular heart rate), reports of any signs or symptoms of infection (like fever, increased white blood cell count), repots from laboratory that could contraindicate surgery (like positive pregnancy test results), reports of other clinical condition that may need further evaluation before surgery (like vomiting, recent intake of an anticoagulant drug).
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What were the independent, dependent, and control variables in your investigation? Describe the variables for the simulation with the moths and birch trees.
The experiment is not found here but dependent variables may include the growth rate of moths, whereas the independent variable may be the temperature and the control is water.
What is a dependent variable?A dependent variable is the variable that is being modified by the conditions of the experiment (in the example, the growth is dependent on the temperature).
Moreover, a control variable is any condition that remains constant throughout the experiment (in this case, the amount of supplied water).
In conclusion, dependent variables is the growth rate, whereas the independent variable is the temperature and the control is water.
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What can be known about Mendel's five-part hypothesis?
Answer: It is an answer to a scientific question and is based mostly on his research.
Explanation:
A gene is a _______________________. Group of answer choices display of the chromosome pairs of a cell complete set of an organism's polypeptides that perform many functions complete set of a cell's polysaccharides that store energy specific sequence of DNA nucleotides that encodes inherited traits
What is a gene?
According to Mendel something was being stably passed down, unchanged, from parent to offspring through the gametes, over successive generations. He called these things as ‘factors’ now called as genes. Genes, therefore, are the units of inheritance. They contain the information that is required to express a particular trait in an organism. Genes which code for a pair of contrasting traits are known as alleles, i.e., they are slightly different forms of the same gene. There is no ambiguity that the genes are located on the DNA, it is difficult to literally define a gene in terms of DNA sequence. The DNA sequence coding for tRNA or rRNA molecule also defines a gene. A cistron is defined as a segment of DNA coding for a polypeptide, the structural gene in a transcription unit could be said as monocistronic (mostly in eukaryotes) or polycistronic (mostly in bacteria or prokaryotes).To learn more about transcription:
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What types of cells are the primary targets of the healthy immune system? select all that apply.
Infectious, foreign, or cancerous cells are the primary targets of a healthy immune system.
White blood cells also known as leukocytes, play a vital role in the immune system. Immune cells are developed from stem cells in the bone marrow and can be divided into different types. Neutrophils, eosinophils, basophils, mast cells, monocytes, macrophages, dendritic cells, natural killer cells, and lymphocytes all are types of white blood cells.
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What is the name of the process that plants use to remove carbon dioxide from the atomsphere
Answer:
photosynthesis
Explanation:
What cytoskeletal elements support the flagellum, and what is its function?
Cytoskeletal filaments provide the basis for cell movement. For instance, cilia and (eukaryotic) flagella move as a result of microtubules sliding along each other. In fact, cross sections of these tail-like cellular extensions show organized arrays of microtubules.
The cytoskeleton of eukaryotic cells is made of filamentous proteins, and it provides mechanical support to the cell and its cytoplasmic constituents. All cytoskeletons consist of three major classes of elements that differ in size and in protein composition.
Microtubules are the largest type of filament, with a diameter of about 25 nanometers (nm), and they are composed of a protein called tubulin. Actin filaments are the smallest type, with a diameter of only about 6 nm, and they are made of a protein called actin. Intermediate filaments, as their name suggests, are mid-sized, with a diameter of about 10 nm. Unlike actin filaments and microtubules, intermediate filaments are constructed from a number of different subunit proteins.
The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement.
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Congestive heart failure results from the heart's inability to pump blood. as a result, _____.
Congestive heart failure results from the heart's inability to pump blood and as a result, fluid accumulates in the body.
What is congestive heart failure?Congestive heart failure is a condition where the heat cannot pump blood during a prolonged period of time, which is associated with severe health problems.
Congestive heart failure may lead to serious conditions and therefore it must be treated immediately in appropriate clinical settings.
In conclusion, congestive heart failure results from the heart's inability to pump blood and as a result, fluid accumulates in the body (it is known as edema).
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Which body system coordinates activities of body parts by releasing hormones into the blood?
Endocrine system which coordinates activities of body parts by releasing hormones into the blood.It is made up of all the body's different hormones, and also regulates body.
In our body hormones released by the glands in our endocrine system control nearly all the processes in your body.And these chemicals helps in coordinating body's function like- metabolism to growth and development, emotions, sexual function. Endocrine system includes mainly 3 types of hormones- adrenal, hypothalamus, ovaries.
Many glands together made endocrine system. The hypothalamus, pituitary gland and pineal gland in our brain. The thyroid and parathyroids are present in our neck.The thymus is between your lunds, the adrenals are on top of your kidneys, and behind the pancreas.
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animal which have no backbone name of there kingdom ???
Answer: invertebrates
Explanation:
Which of the following is not an example of diffusion?
A:a drop of food coloring spreading through a glass of water
B:perfume filling a room
C:salt spilled onto the table
D:air leaking from a tire
The spilled salt does not actively spread or disperse throughout the table. Option C does not show diffusion.
Diffusion is the movement of particles or molecules from an area of higher concentration to an area of lower concentration, resulting in their even distribution.
When salt is spilled onto a table, it does not undergo diffusion. Instead, it remains localized in the area where it was spilled.
The random movement of particles from a region of high concentration to a region of low concentration is known as diffusion, although in this situation, the salt spilled is not actively spreading or moving over the table.
When a drop of food colouring is added to a glass of water, the food colouring molecules spread out evenly throughout the water due to diffusion.When perfume is sprayed in a room, its scent spreads throughout the air in the room, reaching all areas evenly, thanks to diffusion.When air leaks from a tire, the high-pressure air inside the tire moves to areas of lower pressure outside the tire, leading to the even distribution of air molecules due to diffusion.Thus, the correct option is C.
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True vertebrates have a true head that develops from a neural crest of cells and hard structures surrounding the notochord.
Yes. True vertebrates have a true head that develops from a neural crest of cells and hard structures surrounding the notochord.
The neural crest, which forms early in the development process in vertebrate embryos, is a fold on the neural plate where the neural and epidermal ectoderms converge. As an embryo grows, the neural crest produces neural crest cells (NCCs), which can differentiate into a variety of different cell types and contribute to tissues and organs.
The notochord is a temporary structure that plays a crucial role in higher animals. It secretes substances that communicate with all neighbouring tissues, telling them where they are and what will happen to them.
Therefore, True vertebrates have a true head that develops from a neural crest of cells and hard structures surrounding the notochord.
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The principle of competitive exclusion states that two species cannot __________ Multiple Choice coevolve. have the same carrying capacity. be part of the same food chain. occupy the same niche.
The principle of competitive exclusion states that two species cannot occupy the same niche.
What is competitive exclusion?Two species cannot coexist in the same ecological niche for very long without one becoming extinct or being driven out because of competition for limited resources.As an illustration of competitive exclusion, the red squirrels in Britain have displaced the grey squirrels.There were fewer red squirrels as a result of diseases, competitive exclusion, and the removal of hazelnuts.Red squirrels were eventually displaced by gray squirrels, who quickly adjusted to their surroundings.Two species with identical niches cannot survive indefinitely, according to the "competitive exclusion principle" (CEP).The competitive exclusion principle states that when two competing living forms attempt to occupy the same niche, only one outcome is possible: One of them will eradicate the other.Learn more about principle of competitive exclusion here:
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How much time does it take for a 1-solar-mass protostar to reach the main sequence?
a. 10–100 million years
b. less than 10,000 years
c. 100,000 to 1 million years
d. 1–10 billion years
a. 10–100 million years is the answer.
Solar mass stars are thought to accrete rapidly. Premain sequence solar mass protostars are probably formed by the collapse of part of a molecular cloud into the "cloud core" in about 105 years (Hartmann, 2000). Strong outflows and jets are sometimes observed.
Star formation begins with the collapse of molecular clouds and fragmentation into highly dense masses. These masses initially contain about 0.01 solar masses, but increase in mass as the surrounding matter is collected by accretion.
Protostars are very young stars, still collecting mass from their original molecular clouds. The protostar stage is the earliest in the process of stellar evolution.
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Diets high in trans fatty acids tend to ______ levels of ldl in the blood.
Answer: Increase
Explanation: This is because trans fats increase LDL cholesterol and decrease HDL cholesterol, which can increase the risk of heart attack or stroke.
The portion of cellular respiration that consists of passing molecules down a series of carriers is:
The electron transport chain of the cellular respiration passes molecules down a series of carriers.
The electron transport chain occurs at the end of the cellular respiration , It is in this stage that most of cellular ATP generation takes place.
The electron transport chain contains many carrier proteins which are located on the inner membrane of the mitochondria. The electrons and hydrogen ions are released into the electron transport chain by NADH.
Firstly, there is generation of a proton gradient across the mitochondrial membrane, then molecular oxygen is reduced to form water and finally there is generation of ATP by the process of chemiosmosis.
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