The three main factors that affect stroke volume are contractility, preload and afterload.
Increase in contractility and preload increases cardiac output whereas increase in afterload decreases cardiac output.
What is stroke volume?Stroke volume refers to the volume of blood that is pumped by the heart through each stroke.
The three factors that affect stroke volume and how it impacts cardiac output when increased is given below:
contractility - an increase in contractility of the heart increases the cardiac outputPreload - an increase in preload increases cardiac outputafterload - an increase in afterload decreases cardiac outputTherefore, the three main factors that affect stroke volume are contractility, preload and afterload.
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How did the Lumber industry contribute to the pollution in Sudbury (Located in Canada)
As of now Sudbury has some of the cleanest air in all of Ontario. That’s hard to believe given the city once emitted 2.5 million tonnes of sulfur dioxide per year due to the Lumber industry. In the 1980s, the “Sudbury” became known as a unit of pollution, against which other industrial cities were measured. It’s now become known as a unit of restoration.
A red blood cell has been placed into three different solutions. One solution is isotonic to the cell, one solution is hypotonic to the cell, and one solution is hypertonic to the cell. Determine which type of solution is in each beaker based on the cell's reaction. Drag each item to the appropriate bin.
The type of solution in each beaker based on cell's reaction are :
Isotonic solution : Normal reactionHypotonic solution : The cell becomes turgidHypertonic solution : The cell becomes deformedMatching each solution to the cell reaction
When the red blood cell is placed in an isotonic solution the solvent flows in and out of the blood cell at the same rate, when the cell is placed in a hypotonic solution the solvent flows into the cell at a faster rate causing the cell to swell ( becomes turgid ) also when the cell is placed in a hypertonic reaction the cell becomes deformed becomes it loses more water than it absorbs.
Hence we can conclude that The type of solution in each beaker based on cell's reaction are : Isotonic solution : Normal reaction, Hypotonic solution : The cell becomes turgid, Hypertonic solution : The cell becomes deformed
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How is the rough ER different
from the smooth ER?
A. The rough ER has visible ribosomes.
B. The rough ER has visible chromosomes.
C. The rough ER has a visible nucleotide.
What is the correct order for respiration?
Is the activity of altering the existing business processes and desgining new ones to take advantage of new information systems
Business process management can be described as the activity of altering the existing business processes and desgining new ones to take advantage of new information systems.
What is Business process management?Business process management is the process of resigning new business process as well as modifying existing processes in order to leverage new information systems available for businesses.
Therefore, business process management can be described as the activity of altering the existing business processes and desgining new ones to take advantage of new information systems.
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Anatomy is the study of atom in space.
True
False
Answer:
false anatomy is the study or review of an object more popular is the human anatomy
Answer: false
Explanation: Each element has a specific number of protons in the nucleus.
During isovolumetric phases of the cardiac cycle, a. The atria are contracting and all heart valves are closed. b. All heart valves are closed. c. The ventricles can only be relaxing. d. The atria are contracting. e. Blood is being ejected into the aorta.
During isovolumetric phases of the cardiac cycle, the atria are contracting.
What happen in isovolumetric phases of the cardiac cycle?The isovolumetric contraction occurs in isovolumetric phase that causes left ventricular pressure to rise above atrial pressure. This leads to opening of aortic valve at the end of isovolumetric contraction when left ventricular pressure exceeds aortic pressure.
So we can conclude that during isovolumetric phases of the cardiac cycle, the atria are contracting.
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why do cell biologists study yeast?
Biologists study cells due to the cell relation to that of animal cell
What are yeasts?Yeast are eukaryotic organisms which are part of the fungus kingdom.
They are important to biologist because they tend too carry out all the functions of the eukaryotic cells and they are known to be closely related to animals
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The Atlantic puffin feeds on several species of Atlantic fish. A population of puffins living on Matinucus Rock was found to feed on the types of fish shown in the graph below. The beaks of this group of puffin are shaped to grasp Species A particularly well. Predict what would happen to the puffins’ beaks if another predator enters the area that is better at preying on Species A. Explain your reasoning based on what you know regarding genetic adaptations.
Answer:
The Puffins would have to find more food sources and the beaks would change accordingly to the food source they are going after.
Most human cells range from 10 to 15 micrometers in diameter. What limits how large a cell can get
The relationship between its volume and surface area limits how large a cell can get.
What is cell range?The range of a cell is defined as the quantity of material that can be found within a cell with respect to the surface area.
The range of a cell is limited by the volume and the surface area which means that the wider the surface area the more volume the cell can contain.
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c. In what ways could you reduce your water usage if there was a water shortage?
Which of the following choices is a goal of science?
A. To make people happier
B. To explain how things work
C. To increase a company's sales
D. To support the government
Which of the connective tissue coverings around nervous tissue is rich in collagen fibers?.
Answer:
epineurium
Explanation:
epineurium
Discuss the relationship between the digestive systems a carnivore and herbivore and compare the length of the digestive system and diet of that animal
Herbivores have longer digestive systems than carnivores have.
How the herbivores have longer digestive systems compared to carnivores?We can conclude that the herbivores have longer digestive systems compared to carnivores.
Carnivores feeds on other animals whereas herbivores eats plants.Most herbivores have a four stomach compartment system that helps them process and digest their food.This is because they have to process cellulose in plants which needs to be properly broken down.Flesh-eating carnivores do not require this arrangement.The four stomach compartment of most herbivores includes Rumen, Reticulum, omasum and abomasum.They also chew the cud whereby they regurgitate food materials.Thus, this could be the answer.
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How is research from college/ universities doing to help stop coronavirus or stop the spread?
Answer:
I added an answer I am afraid it was wrong and I am new I don't know how to delete an answer, so I just edited and wrote this
Explanation:
Answer: i do not know
if this is correct
Explanation:
1. Conducting research
2. Sharing data and information
3. Boosting medical personnel
4. Putting idle facilities to good use
5. Offering ethical guidance
A variety of mice can have either gray fur (G) or white fur (g). Which words
describe the genotype of a mouse that inherits two of the alleles for gray fur?
O
A. Heterozygous gray
B. Heterozygous recessive
OC. Homozygous dominant
O D. Homozygous white
Answer:
[tex]\huge\boxed{\sf C. \ Homozygous\ dominant}[/tex]
Explanation:
Key:Since the dominant trait is denoted by a capital letter, gray is a dominant trait denoted by G.Recessive trait: White fur denoted by g.The mouse inherits two of the alleles for gray fur i.e. GG.
GG is gray (dominant trait) and GG is having the identical alleles so it will be called homozygous dominant.
[tex]\rule[225]{225}{2}[/tex]
With ideal environmental factors, the reproduction rate of bacteria is...
With ideal environmental factors, bacteria are able to reproduce at a very rapid pace.
Bacterial reproductionBacteria reproduce mainly by a single cell dividing into two, given the right condition. In order words, they reproduce by binary fission.
When environmental conditions are optimum, a typical bacterial cell can divide every 4 to 20 minutes depending on the species.
The time can become longer with sub-optimal environmental conditions.
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On the diagram below,circle the following
Answer:
where is the following??
Answer:
an electron in the hydrogen atom makes a transition from an energy state of principle quantum number ni to n=2state if the photon is emitted has a wavelength of 434 what is the value of the ni
For fruits/vegetables, why do some sugars exist in simple forms and some sugars in complex forms?
Simple sugars are a type of carbohydrate. Carbohydrates are one of the three basic macronutrients — the other two being protein and fat.
Simple sugars are found naturally in fruits and milk, or they can be produced commercially and added to foods to sweeten, prevent spoilage, or improve structure and texture.
Monosaccharides are the simplest carbs, in that your body cannot break them down further.
This allows your body to absorb them quickly and easily, with the exception of fructose.
There are three types of monosaccharides (1Trusted Source):
Glucose: Fruits and vegetables are natural sources of glucose. It’s also commonly found in syrups, candy, honey, sports drinks, and desserts.
Fructose: The primary natural dietary source of fructose is fruit, which is why fructose is commonly referred to as fruit sugar.
Galactose: The main dietary source of galactose is lactose, the sugar in milk and milk products, such as cheese, butter, and yogurt.
A strand of mRNA has the bases cytosine-cytosine-uracil. Which amino acid corresponds to these bases?
A. leu
B. pro
C. ser
D. phe
what are the components of the PNS ?
The components of the Peripheral nervous system consists of nerves, ganglia and nerve endings.
What is the function of peripheral nervous system?The peripheral nervous system is one of the divisions of the central nervous system. Its function is to transmit information from it to other organs and specific parts of the body. Function is carried out through the nerves and nerve ganglia.
In this case, we can say that The Peripheral Nervous System is formed by nerves and ganglia and its function is to bring information to the Central Nervous System and responses to Organs effector organs.
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Stones caused by the precipitation of minerals, such as calcium, and other substances from the urine or kidney filtrate are ________________.
Kidney stones are stones caused by the precipitation of minerals, such as calcium, and other substances from the urine or kidney filtrate.
What are Kidney stones?
These are hard deposits of minerals such as calcium etc which stick together in the urine of affected individuals.
This thereby causes pain when urine is being expelled from the body as a result of the large size.
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1. do you think erythropoietin levels in athletes at low altitude are lower, higher, or the same after training at a high altitude for 2 months?
2. calculate the average ml of oxygen molecules in 100 ml blood in the athletes at low altitude and then in athletes in high altitude while training at high altitude. use the following information: 1.39 ml of oxygen per gram of hemoglobin.
3. do athletes training at high altitudes have more or less oxygen molecules per ml of blood then athletes training at low altitudes? explain why this difference gives athletes who train at high altitudes an advantage over athletes who train only at low altitudes.
results
table: effect of altitude on hct and hb
low altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 52 21 40 14.5
subject 2 49 20 41 14.4
subject 3 48 21 44 14.6
average 4 50 21 42 14.5
high altitude
hb length of whole length of
blood column packed rbc hematocrit hb
(nm)(g/100 column (mm) % (g/100 blood)
subject 1 49 22 45 17.4
subject 2 50 22 44 17.3
subject 3 50 22 44 17.3
subject 4 50 22 44 17.3
1. Erythropoietin will be higher at low altitude. Erythropoietin or EPO level will be higher because of the raised blood oxygen training but its lasting period will depend on the training content as here it is only 2 months.
About high erythropoietin:
Among the objectives of altitude training is to improve athletes' sea-level endurance performance by raising blood oxygen carrying capacity. The attainment of improved haematological variables is mostly due to the augmented erythropoietin (EPO) production in hypoxia. The duration of exposure and degree of hypoxia affect the level of the erythropoietin EPO rise and the rate of erythropoiesis acceleration. The haematological response to altitude training may also be influenced by a wide range of additional factors.
2. 100 ml of blood contain 27.8 mL of oxygen. This can be said as it has been shown that a healthy person typically possesses 20 grammes of haemoglobin in every 100 millilitres of blood.
Procedure:
=20∗1.39
=27.8mL
Amount of oxygen found in 11 grams of hemoglobin is equal to 1.39 milliliters of oxygen.
Thus, the total amount of oxygen in milliliters would be equal to product of total weight of hemoglobin and the total amount of oxygen in ml in one gram of hemoglobin.
3. Athletes training at high altitude have more oxygen molecules. They have an advantage as a result of having more red blood
Why so:
Higher elevations have thinner air, which has less oxygen molecules per volume of air. The body therefore makes more red blood cells when athletes workout at these high elevations. For up to 20 days, these additional blood cells remain in the body. Also as a result of having more red blood cells, their blood can carry more oxygen. When they compete at lower elevations, their muscles naturally get a boost from more oxygen.
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Which of the following factors would be LEAST likely to have an impact on the carrying capacity of an ecosystem?
OA. The amount of food available.
OB. The age of the habitat.
C. The number of nesting sites.
OD. Diseases existing in the habitat.
O E. The number of predators.
I need the answers asap ASAP ASAP please
What adaptation
did lobe-
finned fish have that was
different than the previous
organisms?
A. lobes that were the beginnings of arms and legs
B. jaws that helped with catching prey
C. giving birth to live young
D. brain and vertical column
Activate Wi
Go to Settings
Answer: A
Explanation:
Lobes were the beginning of arms and legs, the correct option is A.
What are lobe-finned fish?Lobe-finned fish, unlike other fish, have a core protuberance in their fins that contains many bones and muscles.
The fins are extremely flexible and may be useful for supporting the body on land, as seen in lungfish and tetrapods.
The majority of bony fish have ray fins. These thin fins are made up of skin webs that cover flexible spines. Lobe-finned fish, on the other hand, have fins that look like stumps.
The lobe-finned fishes are the ray-finned fishes' sister group. They are distinguished by paired, fleshy pectoral and pelvic fins espoused by a single bone.
Prehistoric records clearly show that terrestrial vertebrates evolved nearly 400 million years ago from lobe-finned fishes.
Thus, the correct option is A.
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Describe the relative thicknesses of the walls of the heart chambers of the fetal pig.
The description of the relative thickness of the walls of the heart chambers is that; the heart chambers themselves are thin, but the heart chambers are very thick.
What is the wall of the heart?
The heart chambers are composed of four hollow spaces within your heart. They are;
Two atria (upper chambers) - one to your right atrium and one to the left atrium.
Two ventricles (lower chambers) - One to your right ventricle and one to your left ventricle. Each of these chambers plays an important role in your heart's functioning.
Finally, the description of the relative thickness of the walls of the heart chambers is that; the heart chambers themselves are thin, but the heart chambers are very thick.
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Consider the following prediction. Prediction: If tomato plants are harmed by NoGro herbicide, then an increase in the concentration of NoGro herbicide in the supplied water will result in a decrease in the average height of the tomato plants over a one-year period. Which of the following best describes this prediction?
OA. The prediction is not useful because it has not yet been peer- reviewed by other scientists.
OB. The prediction is useful because it summarizes what is already known about a particular research question.
OC. The prediction is not useful because it fails to mention the name of the scientist doing the experiment.
OD. The prediction is useful because it explains what observations will be made if a hypothesis is true
The statement that describes this prediction is as follows:
The prediction is useful because it explains what observations will be made if a hypothesis is true.Thus, the correct option is D.
What is Herbicide?Herbicide may be defined as a chemical agent that is responsible for destroying or inhibiting the growth of a particular plant as compared to the normal one.
The projection is necessary because it supports the product after a one-year duration. So for example, if after one year there is undoubtedly a reduction in the intermediate height of the tomato plants, then we can absolutely say that it is because of the existence of NoGro herbicide which is supplied in water.
Therefore, it is well described above.
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Which part of the chemical equation is incorrect
The part of the chemical equation is incorrect is The solution is 10 02, it ought to de 1302.For carbon, on each aspects, there are eight carbon atoms.For hydrogen, on each aspects there are 20 hydrogen atoms.
What a part of a chemical equation are you able to by no means alternate?When you stability an equation you could most effectively alternate the coefficients (the numbers in the front of molecules or atoms). Coefficients are the numbers in the front of the molecule. Subscripts are the smaller numbers observed after atoms. These can not be modified while balancing chemical equations.
The complete question is Which part of the chemical equation is incorrect which is 2C4H10+ 10O2 - 8CO2+10H2O.
To realize if a response is properly balanced among the reactants and the products, you need to calculate the wide variety of atoms of every detail on each aspect of the response and to test if they may be equal.For oxygen, there are 20 oxygen atoms withinside the reagents and 26 withinside the products, so it's miles essential to grow the wide variety of oxygen withinside the reactants (with out touching the others). For this we positioned thirteen 02 withinside the reactants rather than 10, to have 26 oxygen atoms on every side.Read more about the equation :
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What is adaptive radiation?
A. the evolution of two species from a single ancestor in a short amount of time
B. the evolution of many species from a single ancestor in a short amount of time
C. the evolution of many species from a single ancestor over a long period of time
D. the evolution of two species from a single ancestor over a long period of time
Answer:
C. The evolution of many species from a single ancestor over a long period of time
Backward (opposite of its normal direction) flow of a body fluid is _______.
The backward (opposite of its normal direction) flow of a body fluid is called reflux.
What is reflux?Reflux refers to the opposite movement of a body fluid during physiological functions.
For example, acid reflux refers to the burning sensation due to the movement of stomach acid to the throat.
In conclusion, the backward (opposite of its normal direction) flow of a body fluid is called reflux.
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