Answer:
Adding more solute will increase the solute potential and decrease water potential by making it more negative.
Explanation:
albinism (the lack of melanin pigmentation) is an autosomal recessive trait. a man and woman both show normal pigmentation but both have one parent who has albinism. they have one daughter who is phenotypically normal. what is the probability that their next child would be an albino girl?
The probability that the next child will show albinism is 0.25.
Albinism is a kind of genetic disorder that occurs in a person. This condition is caused by the lack of a pigment called melanin in a person. The lack of this certain pigment in a person's skin, hair, and eyes leads to lighter color or no color in one's skin, hair, or eyes.
In the given situation, the parents of the child are heterozygous parents.
Hence, since they both have one parent that has albinism, the probability that they will show albinism is 0.25. Since it is a recessive trait in both of them, they might or might not show it. In this case, they didn't, but the marker which carries the trait is still present in both of them. Hence, when they pass it on to their second child, the probability that the second child will show albinism is also 0.25 or 25%
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hi brainly people i need help due NOW
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Looking at the pedigree chart, individual #8 must be heterozygous for the trait in question.
Human pedigreeThe trait shown by the pedigree is a recessive trait. Thus, individuals that phenotypically exhibit the trait will have two recessive alleles.
This means that individuals #1 and #10 in the pedigree are homzygous recessive for the trait.
Let us assume that the recessive trait is a while the alternate version is A. If it has been established that individual #1 is homzygous recessive, the genotype will be aa.
we are not sure if individual #2 is homzygous dominant or heterozygous.
If #2 is heterozygous, the cross between #1 and #2 will be:
aa x Aa
Aa aa Aa aa
If #2 is homzygous dominant, the cross would be:
aa x AA
Aa Aa Aa Aa
Whatever the genotype of #2, the offspring are either heterozygous or exhibit the trait. Since none of the offspring is shaded in the pedigree, it means they can only be heterozygous.
In other words, individual #8 can only be heterozygous for the trait in the pedigree.
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a common inhabitant of human intestines is the bacterium escherichia coli. a cell of this bacterium in a nutrient-broth medium divides into two cells every 20 minutes. the initial population of a culture is 52 cells. find the relative growth rate. (assume t is measured in hours.)
Relative growth rate of the bacterium will be k=ln8
E. coli: Escherichia coli, more commonly referred to as just E. coli, is well-known for causing severe human illness, but there are only a few strains. The majority of strains are harmless and naturally occur in the human intestine.
From the equation: [tex]p(t) = p_{o} e^{kt}[/tex]
[tex]\\p_{o} = 52, t= 20 min = \frac{20}{60} hr = \frac{1}{3} hr.[/tex]
To find Relative growth:
[tex]\frac{p(t)}{p_{o} } = 2[/tex] at [tex]t= \frac{1}{3} hr\\[/tex] (as cell divide into 2 in first 20 min)
[tex]2= e^{\frac{k}{3} } , ln2= \frac{k}{3}[/tex]
therefore, k= ln8
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History of the Universe Timeline Activity
Part 1-Put these Universe events in the order that you believe they occurred (from the first event to the last event)
The first flowers appeared on Earth
The first galaxies were formed
The first dinosaurs appeared on Earth
The first stars in the Universe were
formed
The formation of our Moon
The Big Bang
The formation of Earth's oceans
The first humans appeared on Earth
The first atoms were formed
The formation of our Sun
The first bacteria appeared on Earth
The first protons and neutrons were
formed
The formation of our Earth
The history of the universe timeline activity from the first event to the last is shown (refer to the events listed below in chronological order).
Universe Timeline Activity:
The history of the Universe Timeline Activity:
(From the first event to the last event)
1. The Big Bang.
2. The first protons and neutrons were formed.
3. The first atoms were formed.
4. The first stars in the Universe were formed.
5. The formation of our Sun.
6. The first galaxies were formed.
7. The formation of our Earth.
8. The formation of our Moon.
9. The formation of Earth's oceans.
10. The first flowers appeared on Earth.
11. The first galaxies were formed.
12. The first humans appeared on Earth.
Hence, the given list above is the correct timeline of events in the history of the universe timeline activity, that we believe have occurred, from the order of first to the last event.
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PLEASE HELP ASAP!!! I WILL GIVE YOU BRAINLIEST IF YOU ANSWER CORRECTLY PLEASEE!!
what happens when RNA is edited?
Answer: One type, insertion/deletion RNA editing, involves the insertion or deletion of nucleotides and actually changes the length of the target RNA. The second type, RNA editing by base modification, changes an encoded nucleotide into a different nucleotide, without changing the overall length of the RNA.
Explanation:
Answer:
Deamination produces an adenosine-to-inosine substitution, one of the most common substitutions in RNA editing.
substrates are held in the active site of an enzyme by:the matching shape of the allosteric site.the lowering of the activation energy.hydrogen and ionic bonds.the action of coenzymes and cofactors.
Substrates are held in the active site of an enzyme by hydrogen and ionic bonds.
What is ionic and hydrogen bonds?Ionic bonds are attracted by electrostatic forces, whereas hydrogen bonds are intermolecular forces. Ionic bonding occurs between permanent anions and cations, whereas hydrogen bonds occur between partial positive and partial negative charges. This is the main distinction between the two types of bonds.
In that they are created by the attraction of atoms with opposing polarity, hydrogen bonds are comparable to ionic bonds in this regard. They lack the strength of full or complete charges, however, as they are formed by the interplay of partial charges.
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Phospholipids are found in a limited number of foods. They consists of a glycerol backbone with two fatty acids and a compound that contains phosphate. Why are they important in food and in the body?.
A substance with one or more hydroxyl groups is alcohol. A saturated carbon atom is joined to the hydroxyl functional group. 1. Alcohols are a class of volatile hydroxyl chemicals created by distilling hydrocarbons.
Answer is alcohol
The body's reaction to alcohol is what?Alcohol is a depressant of the central nervous system. This indicates that the medication slows brain activity. Your mood, conduct, and self-control may change as a result. It may impair one's memory and ability to think coherently. Your physical control and coordination may be impacted by alcohol as well.
Alcohol has an impact on all of your body's organs. It might increase your heart rate and blood pressure, for instance. If you consume too much alcohol at once, you might become sick.
The effects of alcohol vary from person to person and depend on a number of variables, including:
your alcohol consumptionhow soon you consumed ithow much food you consumed before drinkingYou areYour sexual orientationYour ethnicity or raceYour state of healthRegardless matter whether your family has a history of drinking issuesA typical drink in the US comprises approximately 14 grams of pure alcohol, which can be found in:
A 12-ounce beer with a 5% alcohol contentWine with a 12% alcohol content, 5 ouncesA "shot" or 1.5 ounces of 40% alcohol-containing distilled spirits or liquorTo Learn more About alcohol., Refer:
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what phenotypic ratios would be expected for the following genetic crosses? monohybrid cross, alleles exhibit complete dominance [ select ] monohybrid cross, alleles exhibit incomplete dominance [ select ] dihybrid cross, alleles exhibit complete dominance and epistasis [ select ]
Phenotypic ratio of a monohybrid cross, Complete dominance- 3:1, monohybrid cross, incomplete dominance- 1:2:1, dihybrid cross, complete dominance&epistasis- 9:3:4.
A monohybrid cross is a genetic mix between two people with homozygous genotypes, or genotypes with completely dominant or completely recessive alleles, that produce opposite phenotypes for a particular genetic trait. This is called a homozygous cross.
A mating experiment between two organisms that are identically hybrid for two traits is referred to as a dihybrid cross. The term "hybrid" refers to an organism that is heterozygous, meaning that it possesses two distinct alleles at a specific genetic position or locus.
Only one allele from the genotype is present in the phenotype in complete dominance. In codominance, the phenotype reflects both genotype alleles. In incomplete dominance, the phenotype consists of a mix of the genotype's alleles.
When one gene's expression is altered (e.g., masked, inhibited, or suppressed) by the expression of one or more other genes, this condition is known as epistasis.
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g you cross the unknown with a wrinkled pea which has a homozygous recessive (rr) genotype. all progeny are spherical. based on these results what is the unknown genotype?
The genetic components that make up an organism's genotype. The term "genotype" also refers to the set of alleles or genetic variations that a person possesses within a certain gene or genetic region.
What is homozygous recessive (RR)?A heterozygous genotype means that an organism has both a dominant and a recessive allele.
This genotype is referred to in our scenario as Bb.
Last but not least, a genotype in which there are two recessive alleles in an organism is known as homozygous recessive.
Heterozygosity, as opposed to homozygosity, has two distinct alleles.
Our parents appeared in various guises to you.
When two alleles are heterozygous, the dominant allele wins out over the recessive one.
Therefore, the dominant characteristic will emerge.
We are carriers even though we won't exhibit the recessive trait.
the parts of an organism's genome that make up its genotype.
The set of alleles or genetic variations that a person possesses inside a certain gene or genetic area is also referred to as their genotype.
Therefore, the genetic components that make up an organism's genotype. The term "genotype" also refers to the set of alleles or genetic variations that a person possesses within a certain gene or genetic region.
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true or false: as long as a protein contains the same amount of each specific amino acid, the order/sequence of these amino acids does not impact the structure (and therefore function) of the protein.
As long as a protein contains the same amount of each specific amino acid, the order/sequence of these amino acids does not impact the protein's structure (and, therefore, function). The statement is false.
Does every protein have the same amino acid sequence?
Each protein has a distinct sequence of amino acids that is identical from one molecule to the next. There are thousands of different proteins, each with its unique amino acid sequence.
Since the chemical composition of each amino acid is influenced, which gives rise to intermolecular interactions that begin to create secondary structures such as -helices and -strands, the protein sequence of amino acids helps determine protein shape.
Therefore, the order/sequence of these amino acids does impact the structure (and therefore function) of the protein
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Will marine food sources keep up with human population growth?
What is the answer? Please help.
Answer: A is the answer. Note that there are different polypeptide structures.
Within the Phylum Platyhelminthes, what does it mean to be bilateral?A. to have symmetry on your body from side to sideB. to have 2 of each appendageC. to have multiple layers of body tissuesD. to have 2 step in your life cycle
Platyhelminthes present a body that can be divided into two, drawing a line from the head to the tail right in the middle of it, as the following image shows:
which of the following statements about the cytoskeleton is true? although microtubules are common within a cell, actin filaments are rarely found outside of the nucleus. the cytoskeleton of eukaryotes is a static structure most resembling scaffolding used at construction sites. the cytoskeleton is produced by transport vesicles of the endomembrane system. movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other. chemicals that block the assembly of the cytoskeleton would have little effect on a cell's response to external stimuli.
The answer is yes this is true, the dynamic aspect of cytoskeletal function is made possible by the assembly and disassembly of a large number of complex proteins into larger aggregates. There are three types of the cytoskeleton: actin filaments (microfilament), microtubules, and intermediate filaments.
What does cytoskeleton mean?All cells, including those of bacteria and archaea, have a complex, dynamic network of interconnecting protein filaments called the cytoskeleton. It stretches from the cell nucleus to the cell membrane in eukaryotes and is made up of identical proteins in different animals.The cytoplasmic protein filament and microtubule network that regulates cell shape, upholds intracellular structure, and participates in cell motility. Examples of Other Words from Cytoskeleton More information on the cytoskeleton.Contractile bundles (found in muscle cells), the MTOC, the nuclear lamina, and the intermediate filament-based 'cage' that forms around the nucleus from flexible cables at the cell surface to the core of the cell are a few examples of higher-order cytoskeleton structures.Hence, the above statement is true.
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How can local sensing be beneficial in your everyday life?
Local sensing can be beneficial in a person's everyday life as it is used in measuring the amount of ozone in the atmosphere using ground-based devices or detecting sea-surface temperature from an orbiting satellite.
What is local sensing about?In local sensing, even though some environmental measurements, like a backyard rain gauge, can be taken right at the source, this is not always practical. Many quantities or characteristics can only be measured remotely or can only be measured remotely with the greatest accuracy.
The Benefit of Local sensing are: Air pollution is a well-known cause of health problems, such as trouble breathing and eye, nose, and throat irritation. local-sensing data can be used to support targeted warnings for the people who are most affected by poor air quality, such as asthmatics, but they can also help inform policy-makers in charge of regulating air pollutants.
In conclusion, local sensing data provide vital information needed to track and forecast meteorological and climatic change, detect and secure our borders, and monitor large-scale changes in land use.
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what can distinguish primates that are adapted for eating large amounts of plants and leaves? group of answer choices their sagittal crests their incisor-like canines their tooth combs their lack of a diastema
Their sagittal crests distinguish primates that are adapted for eating large amounts of plants and leaves.
Many mammalian and reptilian skulls, among others, have a ridge of bone running longitudinally along the midline of the top of the skull (at the sagittal suture). There are incredibly powerful jaw muscles because of the existence of this bone ridge.
What kinds of animals have sagittal crests?
The top of the skull in carnivores and omnivores has a ridge known as the sagittal crest. The sagittal crest, which is where the powerful muscle that regulates the lower jaw's crushing action attaches, is highly noticeable in opossums and fishers but less so in coyotes, raccoons, and otters.
Therefore sagittal crests distinguish primates that are adapted for eating large amounts of plants and leaves
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in order for molecule x to cross the plasma membrane of a cell, it must first bind to an integral membrane protein. the binding of molecule x to the integral membrane protein immediately causes a conformational change to the integral membrane protein, which exposes molecule x to the other side of the membrane where it is then released. what is this an example of? neutral transport active transport passive transport
This is an example of passive transport ( Facilitated Diffusion).
A type of membrane transport called passive transport moves materials across cell membranes without the use of energy. Active transport uses cellular energy to transfer materials across cell membranes, whereas passive transport uses the second law of thermodynamics.
A form of passive transport is facilitated transport. In contrast to simple diffusion, when substances flow across a membrane without the aid of membrane proteins, substances diffuse over the plasma membrane in aided transport, also known as facilitated diffusion.
Permeases are membrane transport proteins that bind to many substrates, including galactose, fructose, and glucose, for example. This binding causes the transmembrane permease domains to alter conformation, enabling passive transport of the substrate across the membrane.
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In a DNA molecule, the number of guanine nucleotides will most likely equal the number of
In a DNA molecule, the number of guanine nucleotides will most likely equal the number of cytosine.
According to Chargaff's rule, the ratio of adenine to Thymine is equals to ratio of Guanine to Cytosine.
What is chargaff's Rule?According to Chargaff's criteria, guanine and cytosine should be equal in amount in the DNA of every species and organism, and adenine and thymine should be equal in amount.
Since the amounts of cytosine and guanine are equivalent, we can just divide their total by 2. 22% adenine, 22% thymine, 28% cytosine, and 28% guanine make up the final makeup.
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after traveling through the right axillary vein, where does blood travel immediately to next? a. median cubital vein b. right brachial vein c. right brachiocephalic vein d. right subclavian vein
After traveling through the right axillary vein, the blood travel immediately to Right subclavian vein next.
Right common carotid and right subclavian arteries are both divisions of the brachiocephalic artery. The left subclavian and common carotid arteries have their own distinct origins from the aortic arch, but otherwise have the same pattern and distribution as their right-side counterparts.
What are subclavian veins?
Deep vein that returns oxygen-poor blood from your upper body to your heart is called the subclavian vein. On each side of your body, you have one. Blood from your right upper torso travels through your right subclavian vein. Blood from your left upper torso travels through your left subclavian vein.
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which factor contributes to both chemical and mechanical weathering
Answer: The factor which contributes to both chemical and mechanical weathering is water.
Explanation:
What is chemical weathering?
Chemical weathering is the erosion or disintegration of rocks, of soil materials, by chemical reactions.
The major factor contributing to chemical weathering is water and minerals dissolved in it while mechanical weathering such as abrasion, freezing etc, is also caused by water.
Thus, we can conclude that, the factor which contributes to both chemical and mechanical weathering is water.
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what is the product of meosis 1?
Answer:
meosis 1 segregates homologous chromosomes which are joined as tetrads (2n, 4c ). producing two haploid cells ( in chromosomes ) which each contained chromatid pairs because the ployidy is reduced from diploid to haploid meosis 1 is referred to as a reductionial division
In a photosystem, clusters of chlorophyll a, chlorophyll b, and carotenoid pigments function most like?.
In a photosystem, clusters of chlorophyll a, chlorophyll b, and carotenoid pigments function most like an antenna. There are two photosystems in plants. Thus, the correct option is B.
What is a Photosystem?
A photosystem is a protein complex which is a group of two or more proteins, these include chlorophyll a, chlorophyll b, carotenoid, and other accessory pigments which are essential for the photochemistry of photosynthesis. It carries out the absorption of light photons and the transfer of these electrons in light reaction and dark reactions of photosynthesis. There are two photosystems in plants which are Photosystem I and Photosystem II which makes made up of antenna.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
In a photosystem, clusters of chlorophyll a, chlorophyll b, and carotenoid pigments function most like
A) an electrical generator.
B) an antenna.
C) a propeller on a motorboat.
D) a windmill.
E) a spring.
a microscope has a x5 eyepiece lens.
describe how to use this microscope to observe a prepared slide of root hair cells at a magnification of x50
[4 marks]
Level 2: To create an accurate account, scientifically significant facts, events, or processes are recognized and provided in detail.
Level 1: Facts, events, or processes are named and briefly described, but it is unclear how relevant they are.
Place slide on stage. Use lowest power / 4 objective lens (initially). Adjust mirror or turn on light so light passes through slide. Move stage as close to lens as possible. Slide must not touch lens. Turn focusing the knob so that slide moves away from lens. Turn focusing knob until image comes into focus. Use fine focus to get clear image. Change objective lens to 10.10 objective lenses and 5 eyepieces, for a total magnification of 50. use the focusing knob to refocus the slideUsing a 5X objective and a 10X eyepiece, for instance, results in a total visual magnification of 50X, and vice versa.
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The magnification of microscope can be made to 50x by adjusting the parameters .
What is magnification of a microscope?
The capacity of a microscope to create an image of an object at a scale bigger (or even smaller) than its real size is known as magnification. Only when it is feasible to discern more details of an object in the image than when studying the object without the use of a magnifying glass can magnification be effective.
The steps for adjusting the magnification of microscope is given below
Set a slide on the stage. utilize a 4-objective lens at the lowest power (initially).Adjust the mirror or switch on the light to let light through the slide. Position stage as closely as possible to the lens.The lens must not touch the slide.Slide should depart from lens as you turn the focusing knob.Once the image is in focus, turn the focusing knob.Get a crisp image by using precise focus.10 objective lenses, 5 eyepieces, and a 50x magnification are the new parameters for the objective lens.reset the slide's focus by turning the focusing knob.A total visual magnification of 50X, for example, is achieved when using a 5X objective and a 10X eyepiece, and vice versa.Hence, the magnification of microscope can be made to 50x by adjusting the parameters .
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How do the different ocean zones help each other?
Answer:
Explanation:
There are three main ocean zones based on distance from shore. They are the intertidal zone, neritic zone, and oceanic zone. Distance from shore influences how many nutrients are in the water. Why? Most nutrients are washed into ocean water from land. Therefore, water closer to shore tends to have more nutrients. Living things need nutrients. So distance from shore also influences how many organisms live in the water. In addition to the amount of salts, other conditions in ocean water vary from place to place. One is the amount of nutrients in the water. Another is the amount of sunlight that reaches the water. These conditions depend mainly on two factors: distance from shore and depth of water. Oceans are divided into zones (Figure below) based on these two factors. The ocean floor makes up another zone.
There exist three main ocean zones as said by distance from shore . they're the intertidal zone,neritic zone,and oceanic zone . Distance from shore influences how many nutrients are in the water . Why ? Most nutrients are washed into ocean water from land . because,water closer to shore tends to have more nutrients . Living things need nutrients . So distance from shore also influences how many organisms live in the water . apart from the number of salts,other conditions in ocean water vary from place to place . One is the number of nutrients in the water . a one more is the number of sunlight that arrives the water . These conditions depend largely on two factors : distance from shore and depth of water . Oceans are divided into zones (Figure below) as said by these two factors . The ocean floor makes up an additional zone .
in drosophila, a key step in initiating the dorsal-ventral body axis involves follicle cells building a signal into the eggshell. which follicle cells create a functional signaling molecule?
The follicle cells create a functional signaling molecule is ventral follicle cells.
What is a dorsal-ventral axis?The dorsal/ventral axis is defined as a line that is perpendicular to the anterior/posterior and left/right axes. An organism's dorsal end is located on its top or back. The ventral end of an organism is defined by its bottom or front side.
In Drosophila embryos, the formation of the dorsal-ventral pattern is dependent on a signaling mechanism in which a putative extracellular ligand released into the area around the embryo known as the perivitelline space binds to the Toll receptor.
The focus protein in the dorsoventral polarity development of the developing fly is called dorsal (DL). It is a transcription factor that regulates the expression of zygotic genes necessary for early development along the dorsoventral axis.
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Can someone help me understand this question
Answer:
Explanation: The names of the compounds given are really large and complex molecules. They are asking for the building blocks of these molecules which is what the complex molecules are made of. One is given (glucose). They are also asking for the function of the building blocks, which means what is the building block of each molecule needed for in a human body. And the examples of those building blocks and functions.
For an individual with the xxy chromosomal composition, the expected number of barr bodies in interphase cells is ________.
For an individual with the xxy chromosomal composition, the expected number of barr bodies in interphase cells is one.
What are barr bodies?A Barr body also known as X-chromatin is described as an inactive X chromosome in a cell with more than one X chromosome, rendered inactive in a process called lyonization, in species with XY sex-determination.
People having more than one X chromosome, the quantity of Barr bodies seen in interphase is always one fewer than total number of X chromosome. So,in this scenario we have above the person is having XXY chromosomal composition, the expected number of barr bodies in interphase cells is one.
In conclusion, Barr Bodies can be found in various biological samples such as hair, buccal cells, and blood.
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which statement is true about dna replication? group of answer choices replication happens during mitosis four new molecules of dna are produced each new strand is identical to its parent strand dna replication produces two identical strands of dna
The statement that is true about DNA replication is each new strand is identical to its parent strand.
DNA replication can be described as a process by which a fragment of DNA uncoils, the two strand makes copies of themselves and coil again.
As a result of DNA replication, the two strands of the DNA form a new strand that is a copy of themselves.
As a result of DNA replication, two identical copies of the DNA are formed which can be used when forming new cells.
The process of DNA replication occurs in all kinds of living organisms. The process of DNA replication is a complex one that requires whole machinery of enzymes and proteins referred to as DNA replication machinery.
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wo friends are discussing physical and chemical changes. isabela says that when you eat, it is a physical change because when you chew, the food is only changed into smaller pieces. mirabel says that when you eat, it is a chemical change because your body digests the food as the chemicals in your body break down the food into energy. who is right?
When one eats, the food is not just changed into smaller pieces, digestion of the food starts right from the mouth. Thus, Mirabel is right.
Food digestionThe digestion of most food types starts from the mouth once they get mixed with the saliva in the mouth. The digestion process continues in the stomach and is eventually finalized.
The digestion of foods is a chemical reaction. That is, foods are not just churned into pieces, they undergo chemical changes through the activities of enzymes.
In physical changes, substances only change physically and not chemically. Thus, they can be retrieved in most cases. This is unlike what is obtainable with chemical changes. Both the physical and chemical properties of food become irreversibly changed with the digestive activities of enzymes.
Thus, Mirabel is right in her assertion while Isabela is wrong.
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The protective mechanism that involves an external stimulus leading to an immediate muscular contraction is called?.
Answer:
a reflex arc.
Explanation:
Reflex arc is the term used to describe the body's immediate and involuntary response to arousal of a sensory nerve. For this to happen, the external stimulus is applied to the body and before reaching the brain, this stimulus receives a response in the body's marrow, causing an immediate involuntary muscle contraction without the will or awareness of the body.