During contraction, internal chambers of the heart become smaller, that forces 50-75 percent of the blood into the ventricles.
What is the function of ventricles?The left ventricle is the thickest of the heart's chambers and pumps oxygenated blood to tissues all over the body whereas, the right ventricle pumps blood to the lungs.
The first and second ventricles are lateral ventricles and these C-shaped structures are located on each side of cerebral cortex. The third ventricle is a narrow and funnel-shaped structure situated between right and left thalamus.
Diastole and systole are phases of the cardiac cycle n which systole occurs when the heart contracts to pump the blood out and diastole occurs when the heart relaxes after contraction.
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in july 2015, a report[1] was released indicating the gram-negative bacterium pseudomonas aeruginosa was found on hospital sinks 10 years after the initial outbreak in a neonatal intensive care unit. p. aeruginosa usually causes localized ear and eye infections but can cause pneumonia or septicemia in vulnerable individuals like newborn babies. explain how the current discovery of the presence of this reported p. aeruginosa could lead to a recurrence of nosocomial disease.
The current discovery of the presence of this reported p. aeruginosa could lead to a recurrence of nosocomial disease as Nosocomial infections, also known as hospital-acquired infections, are the infections that are contracted within a hospital environment.
Transmission of these infections usually occurs via healthcare workers, patients, hospital equipment, or intravenous injections.
Pseudomonas aeruginosa may be a commonly typified, gram-negative, aerobic–facultatively anaerobic, rod-shaped bacterium that can cause illness in plants and creatures, counting people.
A species of considerable therapeutic significance, P. aeruginosa could be a multidrug-safe pathogen recognized for its ubiquity.
Its inherently progressed anti-microbial resistance components, and its affiliation with genuine sicknesses – hospital-acquired diseases such as ventilator-associated pneumonia and different sepsis disorders.
A hospital-acquired contamination, too known as nosocomial contamination (from the Greek nosokomeion, meaning "clinic"), is a disease that's obtained in a health care office.
In both healing centers and nonhospital settings, it is now and then instep called a healthcare-associated disease.
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which class of antibiotics acts to inhibit the synthesis of rna and dna, thus stalling bacterial replication
Fluoroquinolones are the class of antibiotics which inhibits RNA and DNA synthesis, which halts bacterial replication.
What are Fluoroquinolones antibiotics?
As we know, antibiotics are medicines that destroy or stop the growth of pathogenic microorganisms. Fluoroquinolones are such antibiotics, or bacterial agents, that are used to treat respiratory tract infections like pneumonia, sinusitis, bronchitis, and even urinary tract infections. These groups of antibiotics are effective against gram +ve and gram –ve bacteria as well.
Fluoroquinolones are FDA approved. They include levoflaxin, ciproflaxin, mixifloxacin, delafloxacin, etc.
Hence, Fluoroquinolones are antibiotics that have the ability to inhibit RNA and DNA growth.
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Determine the proportion of various phenotypes of offspring that this couple may have.
This pair may have 1/8 type O with N antigens kids, which is a proportion of different phenotypes.
The man's genotype is I⁰I⁰ and the woman's genotype is IᵃI⁰ because the man has type O blood and the woman has children with him. Their offspring's genotypes will be as follows:
F/M I⁰ I⁰
Iᵃ IᵃI⁰ IᵃI⁰
I⁰ I⁰I⁰ I⁰I⁰
Children with O group blood have a 0.5 chance of being born, and children with A group blood have a 0.5 chance. The MN antigen is heterozygous for both people. Following are the odds of inheriting MN antigens:
F/M M N
M MM MN
N MN NN
0.25 percent of people have the homozygous M antigen type.
The likelihood of having the MN antigen type is 0.5.
0.25 percent of people have homozygous N antigen types.
As these two events are independent of one another, the chance of ABO blood group and MN antigen inheritance is the product of their individual probabilities.
Type A with M antigen is equal to 0.5 x 0.25 x 0.125 x 1/8.
Antigens M and N in Type A = 0.5 x 0.5 x 0.25 x 1.4
N antigen type A = 0.5 x 0.25 x 0.125 x 1/8
Type O antigen M = 0.5 0.25 0.125 1/8
Type O antigens M and N = 0.25 = 1/4
0.125 = 1/8 for type O with N antigens.
In the event that both parents are heterozygous for the gene (Hh) in charge of the synthesis of the H substance, then
Type A: 3/32 with M antigen
Antigen type A with M and N: 6/32
Type A: 3/32 with N antigen
5/32 for type O with M antigen.
Antigens M and N for type O: 10/32
5/32 for type O with N antigens.
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COMPLETE QUESTIONS:
A woman with type A blood (whose father was type O) has children with a man that has type O blood. Both individuals are heterozygous for the MN antigen.
Recall that MN blood group antigens are independent of the ABO locus, and that the alleles are codominant.
Determine the proportion of various phenotypes of offspring that this couple may have.
Type A with M antigen:
Type A with M and N antigens:
Type A with N antigen:
Type O with M antigen:
Type O with M and N antigens:
Type O with antigen:
Options: 0, 1/8, 1/4, 1/2, 3/4, 1
How would the results from Part A change if both parents are also heterozygous for the gene controlling the synthesis of the H substance (Hh)?
Type A with M antigen:
Type A with M and N antigens:
Type A with N antigen:
Type O with M antigen:
Type O with M and N antigens:
Type O with antigen:
Options: 0, 1/32, 3/32, 5/32, 6/32, 10/32, 1
periods in which new species appear relatively quickly are associated with the theory of . a. punctuated equilibrium b. reproductive isolation c. microevolution d. mutation
New species appear relatively quickly are associated with the theory of . (a) punctuated equilibrium. So option (a) is the correct answer.
A pattern of rapid evolutionary change followed by long periods of stagnation is a pattern explained by an interrupted equilibrium. Punctuation equilibrium states show that organisms do not change much as they appear in the fossil record.
Interrupted equilibrium predicts that many species evolutionary changes occur on short time scales associated with speciation events.
An intermittent equilibrium occurs as genetic variation passes more rapidly, increasing the rate of evolution and speciation. Tyrannosaurus fossils and mollusks species from the Turkana Basin are examples of intermittent equilibrium.
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a hemoglobin molecule can bind up to four oxygen molecules on the iron atom in a heme group and experiences cooperative binding, which means that as oxygen molecules are added to one heme group, it is easier to add another oxygen molecule to one of the other heme groups. in other words, through cooperative binding, once a deoxyhemoglobin molecule, which has a low affinity for oxygen, starts to bind oxygen it more easily binds additional oxygen molecules and once a hemoglobin molecule starts to release oxygen, it more readily releases additional oxygen. how does cooperative binding relate to oxygen use during rest and strenuous exercising? (choose all that apply)
Because muscles do not require oxygen while a person is at rest, hemoglobin uses less oxygen. When a person transitions from rest to exercise, hemoglobin molecules are released into the muscles.
What does a low hemoglobin level mean?Hemoglobin levels may fall if an illness or condition interferes with your body's capacity to make red blood cells. Your body isn't receiving enough oxygen when your haemoglobin level is low, which makes you feel extremely exhausted and weak.
Why does hemoglobin level rise?When your body needs more hemoglobin to carry oxygen, which typically happens when you smoke, your hemoglobin count rises. You produce more red blood cells naturally if you reside at a high altitude to make up for the area's lower oxygen levels.
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B cells have antigen receptors that bind to antigens that are either freely dissolved or present on the surface of invading/foreign cells. T cells have antigen receptors that.
T cells have antigen receptors that: bind to antigen fragments presented on major histocompatibility complexes by host cells.
T cells are a type of lymphocytes. They are an essential component of immune cells and are of two types: Helper T cells and Cytotoxic T cells. The helper cells help in the activation of other immune cells like B cells to fight against infection, while the cytotoxic cells directly kill the foreign invaders.
Major Histocompatibility Complexes are the genes that encode for proteins that help in the presentation of foreign antigens onto the surface of infected cells so that they can be recognized by immune cells. They are present in all of the higher vertebrate animals.
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which new fossil find would favor the arboreal hypothesis for primate origins over the visual predation hypothesis?
According to the visual predation hypothesis, features of primates evolved as a result of their ability to hunt insects and other small animals.
What is hypothesis the meaning?In a scientific setting, a hypothesis (plural: hypothesis) is a tested claim regarding the connection between two or more factors or a suggested explanation for a phenomenon that has been observed.
What is an example of hypothesis?Several illustrations of basic hypotheses: In comparison to kids who skip breakfast, those who eat breakfast perform better on arithmetic exams. "Pupils who have test anxiety first before English exam do worst than the pupils who do not suffer from anxiety levels," complex.
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which of the following individuals theorized that human characteristics and behaviors may be hereditary and serve evolutionary purposes? elimination tool select one answer a william james b wilhelm wundt c sigmund freud d b. f. skinner e charles darwin
According to Charles Darwin, human traits and actions may be inherited and used for evolutionary goals. The correct option for given question is e
Charles Darwin introduced the Theory of Evolution by Natural Selection in his 1859 publication "On the Origin of Species." Darwin describes in his book how creatures change over generations through the inheritance of physical or behavioral features. As illustrated by one of the Galapagos finches Darwin studied and the form of its beak, the theory's central principle is that features can change within a population.
The theory holds that individuals who have traits that make it simpler for them to adapt to their environment will help them survive and have more offspring, who will inherit those traits. People that are less flexible are less likely to survive and pass those traits on.
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PLEASE I NEED HELP
Using the words gene and protein molecule, write a 3-4 sentence summary to explain where individuals in a population get their traits.
Explanation:
individuals contain genes that are unique to the individual. the genes are coded into mRNA and in the ribosomes the mRNA are read form tRNA to assemble amino acids and form a polypeptide chain which is modified further to form protein molecules. these proteins molecules form structures, enzymes and hormones which contribute to the individual's traits such as hair structures, digestive traits and body structures too.
therefore, proteins made off the genes in an individual determine their traits
which is not true about disturbances? they occur only on short time scales. they are caused by natural events such as hurricanes. some are due to anthropogenic causes. they can cause complete destruction of an ecosystem.
The statement that is not true for disturbances is 'they can cause complete destruction of an ecosystem'.
Ecological disturbance is a non-biological or biological event or force that alters the spatial organization of organisms in the ecosystems they live in as well as their mortality. The nature of entire ecosystems as well as the organization of particular populations are significantly shaped by disturbance.
Even though disturbances frequently have a negative impact on the populations of native plants, animals, and other organisms in a given environment, they can also provide fugitive species a chance to enter and establish themselves in ecosystems where their biological communities once were excluded.
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Construct a flowchart to describe the process by which a foreign gene is inserted into the genome
Genome editing is the process by which a foreign gene is inserted into the genome.
What is the process of inserting foreign genes into an organism?Animals given new genes by this method are called "transgenic." Their new genes are usually passed on to their progeny. These foreign genes can be conveyed, that is, make their protein products, which can consult new characteristics on the animal.
When foreign DNA is initiated into an organism, it is called a genetically modified organism or transgenic organism. It is inserted with the help of vectors into the receiver organism. It then becomes an integral part of the host's genome like other indigenous genes, due to recombination.
So we can conclude that A transgenic, or genetically modified organism is one that has been altered through recombinant DNA technology.
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Which process is responsible for producing sex cells?
two different bacterial species with doubling times of 2 h and 4 h are growing in a batch nutrient-rich medium with their maximum growth rate. the initial concentrations are the same. a. what would be the ratio of x1/x2 after 10 h of batch growth? b. how long should the batch growth of the mixed cultures last in order to obtain x1/x2
The ratio of x1/x2 after 10 h of batch growth would be 2:1. The batch growth of the mixed cultures should last for 20 h in order to obtain x1/x2.
We calculate this using,
a) Rate
N= N0ekt
For each bacteria we have to find out K so first bacteria with doubling time 2 hour
Assume there were 100 bacterias then after 2 hours there will be 200 bacterias
so N = 200 , N0=100 and t=2 hours
200 = 100*ek*2
200/100 = e^2K
e^2K = 2
Taking ln on both sides
2K = ln 2
K = ln2/2
=0.34657
The equation for bacteria X1
N0= Ne0.346t
For bacteria X2 K= ln2/4 ( because only difference here is the doubling time) =0.17328
So the equation for X2
N0= Ne0.173t
a) X1/X2 after 10 hours so t = 10
Ne0.346t / Ne
0.173t=e0.346t / e0.173t
= e0.346*10 / e0.173*10
= 31.817 / 5.64
=5.6413
b) X1 / X2= 10
e0.346t / e0.173t =10
Taking ln on both sides
ln ( e0.346t / e0.173t )= ln 10
ln e0.346t- ln e0.173t = ln 10
0.346t- 0.173t = 2.302
t ( 0.346- 0.173 ) = 2.302
t = 2.302/ ( 0.346 - 0.173)
=13.306
So the time is 13.306 hours
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forensics
1. Describe how insects can be useful for identification of drugs in forensics
2. If three different sized larvae are found on a body, which should you use to determine post mortem interval and why?
3. List two factors that can affect insect colonization rates
1. Insects can be useful for identification of drugs in forensics because of entomologist
2.Different sized larvae are found on a body then the postmortem interval is directly related with the length of larva so big or whose length is more or whose size is more are use to determine post mortem interval
3. The factors that can affect insect colonization rates are temprature and humidity
Entomologist can help forensic pathologist in determining TOD by looking at the insect that are feeding on the around of the body and calliphoridea means blow flies and sarcophagidea means flesh flies are belong to order diptera and this are the most wide spread and accurate insect for determining TOD and factor that affect insect colonization rates are temprature and humidity and rainfall as well as weather the cadaver is exposed or concealed may influence the rate of insect invasion and hen the postmortem interval is directly related with the length of larva so big or whose length is more or whose size is more are use to determine post mortem interval because the post mortem interval can be determined from the larvae of blow flies using the growth parameter and larval length as biological clock
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which of the following is unique to cardiac muscle cells? only cardiac muscle contains a sarcoplasmic reticulum. only cardiac muscle has gap junctions. only cardiac muscle is capable of autorhythmicity only cardiac muscle has a high concentration of mitochondria.
Only cardiac muscle cells shows autorhythmicity The unique feature of cardiac muscle cells is autorhythmicity .
Cardiac muscle cells (cardiomyocytes) are striated, branched, have a large number of mitochondria, and are controlled involuntarily.
Specialized cardiac muscle cells known as autorhythmic cells are where action potentials (electrical impulses) in the heart are thought to begin. These cells have the capacity to self-excite and produce an action potential without external nerve cell activation. The autorhythmic cells offer a conduction system to coordinate the contraction of muscle cells throughout the heart and act as a pacemaker to start the cardiac cycle (the heart's pumping cycle).
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Hi can you help me come up with a hypothesis for a plan and design lab?
the problem statement was that Mary uses an enzyme based detergent for washing and noticed that it cleaned her clothes better in warm water rather than cold water.
Provide a hypothesis to the problem statment.
Answer:
The enzymes in the detergent have an optimal temperature closer to that of the warm water at which they have the greatest reaction velocity.
Explanation:
Enzymes function best at a specific pH and temperature. This is due to the chemical characteristics of the enzyme. In this case it was observed that the enzyme was able to clean better at a higher temperature. To test this you could measure the reaction velocities using a kinetic enzyme assay that uses a spectrophotometer to measure the absorbance of a sample over a period of time to record the change. The independent variable would be the temperature.
Answer: i know this isnt about the question but i just wanted to say thank you so much for helping me with punnet squares again!! i hope you have an amazing day <3
Explanation:
Which option is not a scientific explanation for the origin of life on Earth?
Life originated on Earth's surface in warm, shallow oceans.
Cyanobacteria colonies were brought to Earth in asteroids or comets.
Life originated in hydrothermal vents deep in the oceans.
Organic molecules were brought to Earth in asteroids or comets.
A
C
D
On the basis of the scientific theories for the origin of life on Earth, the explanation which is not correct is that the colonies of cyanobacteria were brought to Earth in asteroids and comets.
What are the different scientific theories on origin of life?According to the deep-sea vent idea, life may have started at submerged hydrothermal vents that spew out essential components for life, like carbon and hydrogen.
In the deepest parts of the ocean's ocean floor, are hydrothermal vents. These vents release fluid that has been heated to a high temperature by the Earth's core as it rises through the crust and is then discharged at the vents gathering dissolved gases and minerals, including carbon and hydrogen. Then, these molecules might have been concentrated in their rocky crevices, serving as mineral catalysts for important reactions. These vents still support thriving ecosystems today because they are rich in chemical and thermal energy.
The meteorites would've been capable of transporting the molecules to Earth after the creation of nucleobases in space, later serving as the foundation for all genetic basis of life.
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the proper first aid for arterial gas embolism, subcutaneous emphysema, pneumothorax, and mediastinal emphysema is:
The proper first aid for arterial gas embolism, subcutaneous emphysema, pneumothorax, and mediastinal emphysema is Administer oxygen, watch Vital signs, treat for shock, and stand by to administer cardio-pulmonary resuscitation, Seek proper medical aid
Subcutaneous emphysema, pneumothorax, and pneumomediastinum are ordinarily a result of thoracic and cervical limit injury, esophageal perforation also called Boerhaave disorder, causes incorporate helped positive pressure ventilation, interstitial lung malady, and aperture of an empty stomach viscus with ensuing dismemberment of air into the mediastinum utilizing the diaphragmatic break and dental strategies as well as a few maladies. It can moreover suddenly happen since of cocaine inward breath, heaving, and commanding strainings, such as in childbirth or strenuous exercise. In any case, synchronous subcutaneous emphysema, pneumothorax, and pneumomediastinum are complications seldom watched synchronously amid an intense asthma assault. This case outlines a bizarre sudden complication of an asthmatic attack.
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the pedigrees of the european royal families show that queen victoria's daughters carried hemophilia, which had important consequences in european history. what are the consequences of hemophilia?
Joint bleeding that can cause discomfort and persistent joint disease Head and occasionally brain bleeding, which can lead to long-term issues like seizures and paralysis.
What outcome of untreated haemophilia is most likely?Frequent internal bleeding, if left untreated, can lead to arthritis or joint degeneration. Infection. Human blood-derived clotting factors used to treat haemophilia increase the risk of viral infections like hepatitis C.
What is the most typical haemophilia complication?Joint Injury. Joint arthritis is the most frequent haemophilia consequence. A joint is where two bones come together. Hemophiliacs occasionally bleed into the joint space for no obvious reason or after an accident.
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throughout the 1920s, otto meyerhof, a. v. hill, and colleagues investigated how cells use energy to power muscle contraction. they determined that during muscle contraction, glycogen is broken down into lactic acid, a product of fermentation. originally meyerhof thought that the conversion of glycogen into lactic acid directly powered muscle contraction. this idea was overturned by experiments performed by einar lundsgaard. what evidence did lundsgaard provide to suggest that glycogen breakdown and lactic acid production did not directly power muscle contraction?
After fermentation inhibition, muscle contraction could continue for a while.
What was his evidence?
It was shown by Lundsgaard that muscles still contract when in glycolysis, the formation of lactic acid is inhibited by the use of iodoacetate pharmacologically.
He also showed that during muscle contraction, pcr gets broken down and the breakdowns extent is proportional to tension created. On the idea of those experiments, Lundsgaard cautioned that the breakdown of PCr changed into the number one energy‐presenting response and this is what initiated the lactate‐forming reactions which regenerated PCr.
Therefore, for contraction, glycogen to lactate conversion is not necessary.
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4. Consider the structural formulas of ATP, ADP, and phosphate in Model 2 carefully. What happens to the atoms from the water molecule during the hydrolysis of ATP?
The water molecule its going to break and its OH group attaches to the phosphate that is removed from the ATP.
What is hydrolysis?Hydrolysis is when a water molecule reacts with another macromolecule and it hydrates. What happens then is that the water molecule splits and releases an OH and the other part of the H2O is going to join the molecule forming part of the new chemical bond.
In ATP hydrolysis, the chemical bonds of ATP, which are high-energy bonds, are broken, resulting in the formation of ADP and an inorganic phosphate, which is to which the OH binds.
ATP hydrolysis occurs when energy is needed for a reaction, since ATP bonds have a lot of energy. It is used in many processes in the body, such as muscle contraction, transport of substances against a gradient.
Therefore, we can confirm that the water molecule its going to break and its OH group attaches to the phosphate that is removed from the ATP.
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5. At one time, interphase was referred to as the
resting phase of the cell cycle. Why do you think
this description is no longer used?
Answer:
ddddddddddddddddddddddddddddddddd
Explanation:
what do each of the genes involved in maturity-onset diabetes of the young (mody) have in common?
The genes involved in maturity-onset diabetes of the young (MODY) have in common that they each play a role in metabolism of glucose, or insulin action and release.
What is metabolism?The group of chemical processes in organisms that maintain life is known as metabolism. The three primary functions of metabolism are the transformation of food's energy into cellular energy, the synthesis of proteins, lipids, nucleic acids, and certain carbohydrates, and the removal of metabolic wastes. Organisms may grow and reproduce, maintain their structures, and react to their environments thanks to these enzyme-catalyzed processes.
What do you understand by MODY?MODY, which stands for "Maturity-onset diabetes of the young," was previously known as Type 2 diabetes in adults because of how similar it behaved to Type 2 diabetes in young people. MODY is distinct from the juvenile form of diabetes in that it restricts the body's ability to manufacture insulin (Type 1 Diabetes).
Thus from above conclusion we can say that the genes involved in maturity-onset diabetes of the young (MODY) have in common that they each play a role in metabolism of glucose, or insulin action and release.
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the lungs do not normally collapse because of group of answer choices their characteristic elastic recoil both surfactant and intrapleural pressure none of the choices are correct intrapleural pressure surfactant
The lungs do not normally collapse because of both surfactant and intrapleural pressure.
The two spongy, pinkish-gray organs in your chest are called lungs. Air enters your lungs when you inhale (breath), and the oxygen in that air travels to your blood. A waste gas called carbon dioxide travels from your blood to your lungs at the same time and is exhaled (breathed out).
The pressure drop lowers the intrapulmonary pressure as well, which causes the lungs to open up and take in more air. This action is the opposite after the timer expires. The pleural cavity's negative pressure acts as a suction to prevent the lungs from collapsing.
The lung cells secrete surfactant, which distributes throughout the alveolar tissue. By reducing surface tension, this chemical facilitates breathing by preventing the alveoli from collapsing following exhalation.
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soils of the spodosol order have a distinctive light-colored horizon of leached material beneath the dark upper horizon of weathered organic material. in what region do soils of the spodosol order occur?
The region where the soils of Spodosol order are present are: coniferous forests of cool temperate or wetter regions.
Spodosol are the acidic soils. Their appearance is a little ashy and gray. The subsurface of these soils has the accumulation of humus, Al and Fe oxides. The soil is found in cool and moist type of climates. Their pH ranges from around 4.5 to 5.5.
Coniferous forests are a biome of terrestrial habitat. These habitats have warm summers and cool winters. The trees rich in coniferous forests are called conifers that have needle like leaves. They also do not have flowers but have conifers. Coniferous forests are generally evergreen.
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Today, some mountain ranges are rising due to tectonic plates colliding, and earthquakes are sometimes caused by tectonic plates sliding against each other. During Earth's past,
A.
the tectonic plates were not moving.
B.
similar tectonic movements were occurring.
C.
mountains were rising, but there were no earthquakes.
D.
there were earthquakes, but no mountains were rising.
The past of the earth was like that there were Similar tectonic movements were occurring.
What is tectonic plates?
Plate tectonics is used to define that, there is a widely held scientific idea that the Earth's lithosphere is made up of a series of huge tectonic plates that have been moving slowly since around 3.4 billion years ago.
Tectonic plates clashing now is causing some mountain ranges to rise, and earthquakes are sometimes produced by tectonic plates moving against each other. Similar tectonic motions were present in the past of the world.
Therefore, option D is correct.
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a friend is trying to touch his toes (with his legs straight) by bouncing his upper body up and down. this sort of bouncing typically stimulates muscle spindles, but not tendon receptors. explain whether this is a good method of stretching the hamstring muscles in the back of the legs.
Blast stretching, Stretching in this manner is seen to be harmful and risky. Your muscles can't get used to being stretched out and can't unwind because of it.
what is ballistic stretching?In that it is movement-based, ballistic stretching is comparable to dynamic stretching. You strive to extend a bodily part's range of motion rather of extending it all the way to the limit. These stretches frequently call for uncontrolled motions that risk harm.
What makes static stretching different from ballistic stretching?The most often practiced form of stretching is static, which is lengthening a muscle until it becomes uncomfortable and holding that posture for a brief period of time ( 5). At the end of the range of motion, where the muscle is at its maximum length, ballistic stretching comprises repeated bouncing movements.
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Proteins that will go to different locations will likely have different _______ sequences.
Answer:
Messenger im sure
The atomic theory has changed as scientists discovered more information about atoms. Which of the following statements
follows the current understanding of atoms?
The atomic theory has changed as scientists discovered more information about atoms statements follows the current understanding of atoms is there is the finite number of kind of atom that combine to make all matter of the universe
Chemistry is based on the modern atomic theory which stated that all matter is composed of atom and atom themselves are composed of protons and neutron and electron and each element has its own atomic number and which is equal to the number of proton in its nucleus and on the cosmic scale of the universe and assume that amount of matter created and uncreated cancel each other out and this mean that matter is finite so there are the same number of atom in the observable universe
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer: D a balance system
Explanation: even though they can go through many different changes both over short and long periods of time, when uninterrupted they usually evolve and change for the better.
Hope this helps :)