Explanation:
Once the fusion reactions begin, the stars exert outward pressure. As long as the inward force of gravity and the outward force generated by the fusion reactions are equal, the star remains stable.
In a stable star, the gas pressure pushing out from the centre is equal to the gravity pulling atoms inward to the centre – when these forces are equal, the star is at equilibrium.
When the force of gravity and the force of fusion in a star are equal to each other, then the life of the star increases and mass of the star is maintained.
What happens to a star when the force of fusion is equal to the force of gravity?When the inward force of gravity and the fusion reactions are equal to each other, the star remains in stable condition. There is direct relationship between force of gravity and fusion reaction. When the force of gravity compresses the core of a star, the temperature increases to a higher limit. At last, the temperature is high enough that the star initiates fusion reaction in which fusing hydrogen into helium occur. When the outward pressure that is produced by fusion energy, it balances gravity which results in the formation of a stable star.
So we can conclude that If the force of gravity and the force of fusion within a star are equal to each other, the star’s life increases and mass of the star is maintained.
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CER elephants and lions need energy to survive macromolecule
Elephants use carbohydrates and protein for energy. Lions use protein and fat for energy.
What are macromolecule and energy?Carbohydrates are the macromolecule that serves as an organism's main source of energy.For instance, macromolecules offer structural support, a way to store energy, the capacity to store and access genetic data, and the capacity to quicken metabolic processes. Proteins, carbohydrates, nucleic acids, and lipids are the four main categories of macromolecules that perform these crucial roles in a cell's life.Elephants use carbohydrates and protein for energy. Elephants eat 3 different types of hay. Each type of hay has mainly carbohydrates plus smaller amounts of protein. Hay has no lipids. Lions use protein and fat for energy. Lions eat 3 different types of animal (meat). Each type of animal has mainly protein plus a smaller amount of protein.During chemical reactions such as digestion, the bonds in large molecules are broken and energy is released. Since elephants eat hay, they are getting carbohydrates and proteins to use for energy when the hay is digested. The energy released when the food molecule bonds are broken can be used for survival.During chemical reactions such as digestion, the bonds in large molecules are broken and energy is released. Since lions eat beef, deer, and pig meat, they are getting proteins and lipids to use for energy after digestion.To know more about macromolecule, visit:
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Under a light microscope, cyanobacterial heterocysts are observed to be larger and have thicker walls than other cells in the filament. this is to protect the heterocyst from?
Under a light microscope, cyanobacterial heterocysts are observed to be larger and have thicker walls than other cells in the filament. this is to protect the heterocyst from exposure to oxygen.
What are cyanobacterial heterocysts?
Some filamentous cyanobacteria, including Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica, produce specialized nitrogen-fixing cells known as heterocysts or heterocytes during nitrogen shortages. Using the enzyme nitrogenase, they fix nitrogen from dinitrogen (N2) in the air to provide the filament's cells the nitrogen they need for biosynthesis.
Since oxygen inactivates nitrogenase, the heterocyst needs to establish a microanaerobic environment. The distinct physiology and structure of heterocysts necessitate a broad alteration in gene expression.
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How do d-amino acids differ from l-amino acids? what biological roles are played by peptides that contain d-amino acids?
L amino acid is capable of rotating plane polarized light anticlockwise and D is capable in rotating clockwise
What does amino acid D stand for?In non-ribosomal physiology, D-amino acids, which are chiral forms of L-amino acids, are known to be useful. Life appears to select one of the enantiomers for biological functions, despite the fact that all proteinogenic amino acids—aside from glycine—have chiral versions.
The main difference between L and D is that L is amino acid is the enantiomers of an amino acid which is capable of rotating plane polarized light anticlockwise or the left hand side whereas D amino acid is the enantiomers of an amino acid which is capable of rotating plane polarized light in clockwise.
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A relatively small organelle that contains enzymes that oxidize organic substances.
A relatively small organelle that contains enzymes that oxidize organic substances is peroxisomes.
We can define peroxisomes as small, membrane-bound organelles where various oxidative reactions take place. Apart from oxidative reactions, peroxisomes are also involved in detoxification reactions. They are also involved in the making of membrane lipids.
These small vesicle organelles, referred to as peroxisomes, are found in all eukaryotic organisms.
By the process of oxidation, organic compounds are broken down by peroxisomes. Peroxisomes contain different enzymes for oxidative reactions to occur. As a result of these oxidation reactions, hydrogen peroxide is made. The hydrogen peroxide produced is toxic to the cells and hence catalase readily converts this hydrogen peroxide into oxygen and water.
Compounds like fatty acids and amino acids are oxidized in the peroxisomes.
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Which characteristic of ions makes them important to living things?
O formation of covalent bonds
O lack of reactivity
O difficulty dissolving
O electrical charges
Answer:
electrical charges
Explanation:
I don't know but I think it is this one
Answer: electrical charges
A true breeding plant with seeds in white pods is crossed to a true breeding pea plant with seeds in orange pods. the offspring of this cross all have seeds found in orange pods. this indicates that:
Answer:
A true breeding plant with seeds in white pods is crossed to a true breeding pea plant with seeds in orange pods. the offspring of this cross all have seeds found in orange pods. this indicates that:Dominant
Why does the use of a salt solution in kimchi act as a preservative against bacterial decay?
Isotonic solution between salt and Kimchi cabbage limits the growth of microorganisms during in the brining process and creates an environment in which lactic acid bacteria (LAB) that can withstand high levels of sodium can take control of Kimchi fermentation.
How does salt preserve the freshness of kimchi?The veggies are breaded (salted) to eliminate the water in order to keep the food and enable the flavours to penetrate it over time. The final salt content ranges between 2 and 5%. Generally, kimchi is fermented by 'wild microorganisms,' which are normally found on vegetables.
Because salt reduces the moisture content of foods, it is beneficial as a preservative. The amount of releasing accessible for microbial growth.
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When a substrate and enzyme interact, the first chemical species formed is the _____.
Answer:Your answer is the enzyme-substrate complex
Explanation:
What type of RNA brings the respective amino acid to the exact codon location during translation?
A) mRNA
B) cRNA
C) rRNA
D) tRNA
Answer: The correct answer is "tRNA"
Explanation:
I took the test
Lipids, proteins, polysaccharides, and nucleic acids are large polymers that make up the different components of our bodies. Which element can be found as the backbone of all of these macromolecules?.
Lipids, proteins, polysaccharides, and nucleic acids are large polymers that make up the different components of our bodies. The element that is found as the backbone of all these macromolecules is carbon.
Carbon is an element that has four free electrons as a result of which it has the capacity to form a variety of compounds that are unique. Carbon forms covalent bonds with other elements to make many of the macromolecules in our body such as lipids, proteins, polysaccharides, nucleic acids etc. Hence, carbon plays a major role in the making of biological systems.
The carbon atom can form such versatile compounds that a whole branch of organic chemistry is made where carbon compounds are studied. It is due to this property of the carbon atom that it is the backbone of the majority of the macromolecules found in an organism's body.
Although a part of your question is missing, you might be referring to this question:
Lipids, proteins, polysaccharides, and nucleic acids are large polymers that make up the different components of our bodies.
Which element can be found as the backbone of all of these macromolecules?
1.Carbon
2.Phosphorus
3.Oxygen
4.Nitrogen
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These glands are also known as eccrine glands and help maintain body temperature.
Sweat glands are also known as eccrine glands and help maintain body temperature.
What are Sweat glands?
On the outside of our bodies, our sweat glands create and discharge sweat. Our entire body surface is covered in eccrine sweat glands, a type of sweat gland. Our body temperature is regulated by the clear, non-oily perspiration that is produced by these sweat glands. One of two different types of secretory skin glands that are only found in animals is the sweat gland. Body temperature is regulated by the sympathetic nervous system, which is in charge of the eccrine sweat gland. Eccrine glands produce water to the skin's surface when the internal temperature rises, where it evaporates to reduce heat. Eccrine glands are important thermoregulatory organs if they cover a large portion of the body, as they do in horses, bears, and humans.
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In Town X, the water has heavy metal M. In Town Y, the water has heavy metal N. Residents of both towns drink the water with no issues.
However, in Town Z, the water has both metal M and N, and the residents have long-term kidney damage. What conclusion can be made about the two metals?
O More metals cause acute effects but not chronic effects
O The first metal causes an acute effect compared to the other.
O The heavy metals have a synergistic relationship when combined.
O The heavy metals have an antagonistic relationship when combined.
The conclusion that can be made about the two heavy metals is that:
The heavy metals have a synergistic relationship when combined; option CWhat are heavy metals?Heavy metals are metallic elements that has a relatively high density and are toxic or poisonous at low concentrations when they enter the body.
Some examples of heavy metals are mercury, arsenic, chromium, lead, cadmium, etc.
A common example of heavy metal poisoning is in lead poisoning of water.
Considering the effects of the presence of a heavy metal M or N in the drinking water of Town X, Y or Z.
Residents of Town X and Town have no issues with their drinking water despite the presence of the heavy metal M and N in their water respectively. However, residents of Town Z whose drinking water has M and N in their water have long-term kidney damage. This implies that M and N together, enhance their effects or have a synergistic relationship.
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Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession? A. A tornado B. A volcanic eruption C. A flood D. A drought
Answer:
b) A volcanic eruption
Explanation:
A volcanic eruption is the catastrophic event most likely will have the effect of returning an ecosystem to primary succession. Hence, option (b) is correct.
Answer:
A
Explanation:
l think bcoz volcanic eruption has to do with fire and then it effects the ecosystem and because people are examples of the ecosystem
In three or fewer sentences, explain how the heart, brain, and muscles coordinate to complete a task that requires
some effort in the human body.
Describe the genotype ratio for their offspring
1 DD-dimpled
2Dd-dimpled.
1dd-no dimple
Answer:
1:2:1
Explanation:
A Dd x Dd cross will produce the following genotype: DD, Dd, Dd, dd. The genotypic ratio is 1:2:1. The phenotypic ratio is 3:1 where 3 offspring will have the dominant trait and 1 offspring will have a recessive trait.
Match them with the answers ILL GIVE BRAINLEST
Answer:
1) Alkali earth metals, group 2 - not as soft as Alkali metals. Reactive metals, but not as reactive as Alkali metals.
2) Nobel Gases, group 18 - Very unreactive nonmetals.
3) Alkali metals, group 1 - very reactive and soft metals.
4) Halogens, group 17 - very reactive nonmetals.
According to darwin, what was the role of naturalists in the context of behavioural research?
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Why origins of replication along a chromosome tend to start at sites with stretches of a and t nucleotides?
The origins of replication along a chromosome tend to start at sites with stretches of a and t nucleotides because-
The positions at which the DNA helix is first opened are referred to as replication origins (parent 5-29). In easy cells like those of micro organism or yeast, origins are designated with the aid of DNA sequences numerous hundred nucleotide pairs in length. This DNA consists of brief sequences that appeal to initiator proteins, in addition to stretches of DNA which can be particularly smooth to open. We noticed in discern four-4 that an A-T base pair is held together by fewer hydrogen bonds than a G-C base pair. consequently, DNA wealthy in A-T base pairs is extraordinarily clean to drag aside, and areas of DNA enriched in A-T pairs are generally found at replication origins.In order to form a replication bubble, the DNA has to be unbound. DNA contains 4 nucleotides A, T, C, and C. A and T basepairs via 2 hydrogen bonds and C and G base pairs with 3 hydrogen bonds, so basepairing between C and G is stronger compared to Basepairing between A and T, so it is easy to break hydrogen bonds between A and T compared to G and C so origin of replication contains A and T nucleotides compared to C and C nucleotidesTo know more about Origin of replication visit : https://brainly.com/question/13685752
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Battus philenor
Pipevine Swallowtail
Limenitis arthemis astyanax
Red-spotted Purple
Limenitis arthemis arthemis
White Admiral
The images show the pipevine swallowtail butterfly (left) and two forms of the species
Limenitis arthemis. Scientists think that the red-spotted purple form of L. arthemis
is a Batesian mimic of the poisonous pipevine swallowtail. In Batesian mimicry, a
nonpoisonous species resembles a poisonous model species. This adaptation causes
predators to c
to confuse the mimic with the model, and avoid it.
Scientists can create lifelike models of butterflies that can be placed in the butterflies'
natural settings and periodically checked for signs of damage from predators such as
birds.
A Identify at least two characteristics of a good hypothesis.
Beautiful woodland butterflies like the red spotted purple, Limenitis arthemis astyanax (Fabricius), are also frequently observed in forested suburban areas. It is thought to be a sympatric Batesian mimic of the lethal pipe vine swallowtail, Battus philenor (Linnaeus).
When observed in flight from a distance, adult red-spotted purples are regarded to resemble pipevine swallowtails and can be challenging to distinguish from any black swallowtails. Observe the absence of tails, the black lines close to the hindwing border dorsal view (viewed from above), and the red-orange dots on the underside (ventral side) of the wings. The ventral red-orange markings close to the body are absent in swallowtails. The larvae resemble bird poop. They have one longer pair of tubercles on the thorax and are humped at the thorax. Shades of brown, brownish yellow, white, and green are spotted across the body. A more northern subspecies that is not mimicked is the white admiral, Limenitis arthemis (Drury). In the lack of a poisonous model, it is thought to profit from its obstructive banded colour for defense.
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Please help! The question is in the picture.
Answer:The value of p is less than the value of Q
Explanation:Q is much denser than p
If an individual with no blood sugar abnormalities when eating regularly presented with severe hypoglycemia after 30 hours of fasting, which enzyme would you suspect might be malfunctioning?
If an individual with no blood sugar abnormalities when eating regularly presented with severe hypoglycemia after 30 hours of fasting, the enzyme is fructose-1-6-bisphosphate.
What is fructose-1-6-bisphosphate?Because to an inherited metabolic disease called fructose-1,6-bisphosphatase insufficiency, the body is unable to produce glucose as it should. The main type of sugar found in blood is glucose, which serves as the body's cells' principal source of energy. Autosomal recessive inheritance is the mode of inheritance for fructose-1,6-bisphosphatase deficiency. A lack of the enzyme fructose-1,6-bisphosphatase results from inherited genetic abnormalities in the FBP1 gene. In turn, this shortage leads to inadequate glucose synthesis.
When do this disease's symptoms start to appear?Age of onset refers to the typical age at which a disease first manifests its symptoms. For some diseases, the age of onset might vary, and a doctor may use this information to make a diagnosis. Some disorders may show symptoms at one particular age or at numerous different ages. Other diseases can manifest their symptoms at any point in a person's life.
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What must occur before tropomyosin can shift, revealing the active sites that allow myosin heads to bind to the actin filaments?
Tropomyosin must change conformation, uncovering the myosin-binding site on an actin molecule and allowing cross-bridge formation. This can only happen in the presence of calcium, which is kept at extremely low concentrations in the sarcoplasm.
In order to reveal the myosin-binding site on an actin molecule and allow the development of a cross-bridge, tropomyosin must modify its conformation. Only in the presence of calcium, which is maintained in the sarcoplasm at incredibly low amounts, is this possible.
According to the sliding filament theory, muscle proteins slide past one another to produce movement during muscular contractions.
The sliding filament theory postulates that during muscle contraction, the actin (thin filaments) and myosin (thick filaments) of muscle fibers glide past each other while remaining at essentially constant lengths.
The myosin binding sites at the Actin filament are covered with the tropomyosin molecules which undergo conformational changes due to the attachment of the troponin to the calcium ions released from the sarcoplasmic reticulum during contraction and thus contraction of muscles takes place.
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Anthropologists might best refute the idea that human culture is biologically determined by using which observation?.
Although different groups have varied eating habits, all humans must eat.
What areas of study do anthropologists often pursue?The four primary subfields of anthropology today are archaeology, cultural anthropology, linguistic anthropology, and biological anthropology.Each uses varied research approaches and has a unique set of research interests.The social sciences, humanities, even biology and geology, as well as other disciplines, are utilised in the methodologies.Biological anthropology and archaeology are frequently the disciplines that are most similar to the biological and physical sciences in terms of learning about the human experience.The majority of anthropologists carry out study and present their findings in their seminars. They are employed by colleges, universities, and museums.However, a third of anthropologists use their skills for problem-solving in non-academic settings such as corporations, hospitals, and governmental and non-governmental organizations. They have expertise in anthropology.Learn more about the Anthropology with the help of the given link:
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In the first 10 years, what did the carrying capacity appear to be?
Every ecosystem has limiting elements that prevent populations from growing out of control, such as the availability of food or the effects of illness and predation.
The carrying capacity of an ecosystem, or the largest population that an ecosystem can sustain given all of its resources, is determined by several limiting constraints.
On a graph of a population function, the carrying capacity, or maximum population size that an environment can support, is shown as a dotted horizontal line.
Therefore, if we had a population graph that resembled this, our carrying capacity would be approximately where this point is located. It would also be a dotted line that would cross where our population graph turned into a horse on a line.
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Which of the following identifies a problem associated with pesticide use?
Crop yield decreases
Costs decrease for farmers
O Pesticides pollute the environment
Only the targeted pests are affected
Answer:Properly applied, pesticides contribute to higher yields and improved product quality by controlling weeds, insects, nematodes, and plant pathogens. In addition, herbicides reduce the amount of labor, machinery, and fuel used for mechanical weed control.
Explanation:
Nerve cells in the visual system, anywhere from the retina back to the occipital lobe, are known as.
Nerve cells in the visual system, anywhere from the retina back to the occipital lobe, are known as visual neurons.
What are visual neurons?The visual cortex contains neurons that are specialized for that purpose. They are distinguished specifically as simple and complicated neurons. Simple cells, which are primarily found in V1 of the visual cortex, respond to a particular set of visual cues, such as edges and orientations, within a single receptive field.How numerous are visual neurons?Each hemisphere of the adult human primary visual cortex is thought to have an average of 140 million neurons.What portion of the brain controls vision?One of the four main lobes in the mammalian brain is the occipital lobe. The occipital lobe is primarily in charge of processing the visual environment around the body, including an object's shape, color, and location.To learn more about nerve cells visit:
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Relate the structure of the cell (plasma) membrane with organic compounds.
Carbohydrates, proteins, phospholipids, and lipids are the organic compounds that structure the cell membrane. The glycocalyx is that the term helpful to describe the carbohydrate coating on the cell surface, which is involved in cell-cell adhesion, protecting the cell surface from chemical damage. The membrane proteins are responsible for the most dynamic processes carried by the membranes. Lipids are providing the essential structure of the cell membrane. Phospholipids are generally made up of from four fatty acids, alcohol, phosphate, and alcohol with phosphate.
The lipids, proteins, phospholipids, and lipids that structure the cell membrane are all organic substances. The term "glycocalyx" is beneficial to describe the carbohydrate coating on a cell's surface that aids in cell-cell attachment and shields the surface from chemical deterioration. The foremost dynamic processes carried out by membranes are controlled by membrane proteins. The elemental structure of the cell membrane is provided by lipids. Four fatty acids, alcohol, phosphate, and alcohol with phosphate are the most components of phospholipids.
The plasma membrane is another name for the cell membrane. It shields the cell and its cellular constituents from the surface world. It controls the flow of chemicals into and out of the cell and is selectively permeable. A cell's cytoplasm is surrounded by a skinny, semi-permeable membrane referred to as the cell membrane (plasma membrane). By letting some chemicals into the cell while blocking others, it serves the aim of preserving the integrity of the cells interior. The upkeep of cellular integrity and the transportation of molecules inside and outside the cells are the two most crucial roles performed by the cell membrane.
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a container of volume 30 cm cube was filled with a liquid of mass 6 grams calculate the density of the liquid
Answer: have this same qeustion need help
Explanation:
help
hhhhheeeeeellllllllpppppppp
A - Ammonia
B - Hydroxide
C - Hydrogen
D - Oxygen
I think this is it
What condition of immediate concern results from a loss of red blood cells due to hemorrhage?
Answer:
Acute condition results from a loss of red blood cells due to hemorrhage.
Explanation:
A sudden decrease in RBCs, most frequently caused by hemolysis and acute bleeding, results in acute anaemia. Contrarily, chronic anaemia typically results in a slow loss of RBCs and has a variety of reasons, such as iron or even other nutrient deficiency, chronic illnesses, drug usage, and others. There are some of the symptoms of acute anemia such as, Tiredness, weakness, skin that is yellow or pale, abnormal heartbeats, respiration difficulty, a feeling of faintness or dizziness, heart problems, Cold feet as well as hands. The quickest way to boost the iron levels when someone is suffering from iron-deficiency anaemia is frequently by eating iron orally or by having iron delivered intravenously combined with vitamin C. RBCs need iron to make haemoglobin, which enables the RBCs transport oxygen towards the body's organs as well as other tissues.
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