Which of the following describes a feedback mechanism
of the endocrine system?

A.an involuntary reaction that controls the way an organ works

B.a way to remove waste in response to more food being digested

C.a change in the number of hormones that affect certain body cells

D.an increase in electrical signals from the nerves to the brain

Answer:

See the attachment.

Hope u understand

In the given question, 5₹ is the fixed charge and 3₹ is the charge for each extra day.

A fixed charge is a fee or cost that remains constant and does not vary with changes in usage or consumption.

Let the fixed charge for the first three days be x and the charge for each extra day be y.

From the given information, we can set up two equations:

For Saritha: \(\rm 3x + 4y = 27 -----(equation 1)\)  

For Susy: \(\rm 3x + 2y = 21 -----(equation 2)\)

We can solve for x and y by using elimination or substitution:

Using elimination, we can multiply the second equation by 2 and subtract it from the first equation:

\(\rm 3x + 4y = 27\)

\(\rm - (6x + 4y = 42)\)

Solving above equations, we get:

\(\rm -3x = -15\)

\(\rm x = 5\)

Substituting x = 5 into one of the equations, we can solve for y:

\(\rm 3(5) + 4y = 27\)

\(\rm 15 + 4y = 27\)

\(\rm 4y = 12\)

\(\rm y = 3\)

Therefore, the fixed charge is ₹5 and the charge for each extra day is ₹3.

Learn more about fixed charge here:

https://brainly.com/question/33211058

#SPJ4

Answer:

hope my answer helps you if helps (ó㉨ò) plz mark me brianliest

Explanation:

The function of refracting the light inside the eye is done by the cornea. The light rays having the visible wavelength are focused on the retina of the eye with the help of the cornea and lens of the eye. When the light strikes the retina portion, this generates impulses in the rods and cones in the retina of the eye.

Answer:

The major characteristic feature  of asexual reproduction is the production of clones.Identical offspring with virtually similar DNA.Therefore,this is advantageous to the parasite because, the offspring or progeny produce are similar(clones), to the parent parasites,thus multiple reproduction can occur  when a single individual  parasites cells divisions.

Explanation:

The given statement "Selective distortion could be described as perceiving stimuli (an event) in a way that makes you feel comfortable cognitively" is False.

Selective distortion refers to the process by which we perceive stimuli in a way that is consistent with our existing beliefs, attitudes, and expectations. This means that we may filter out information that contradicts our preconceptions, or interpret information in a way that reinforces them. This can lead to cognitive dissonance, which is the discomfort or anxiety that we feel when our beliefs and actions are inconsistent with each other.

False. Selective distortion can occur at both conscious and unconscious levels. At the conscious level, we may be aware of the ways in which we are filtering information, and we may be able to consciously control our perceptions to some extent. At the unconscious level, our perceptions may be influenced by our deep-seated beliefs and attitudes, which we may not even be aware of.

Most of our thoughts occur at a conscious level, but there are also many thoughts and perceptions that occur at an unconscious level. These unconscious thoughts and perceptions can be influenced by a wide range of factors, including our past experiences, our cultural background, and our current emotional state.

True. Perception and reality are not necessarily the same thing. Perception refers to the way that we perceive and interpret information through our senses. Reality refers to the objective state of things as they actually exist, independent of our perceptions. However, our perceptions can influence our understanding of reality, and our perceptions may not always be accurate or complete.

Perception and reality can be distinct constructs, but they are also closely related. Our perceptions can be influenced by our expectations, our past experiences, and our cultural background, among other factors. At the same time, our perceptions can also provide us with information about the world around us that is independent of our subjective experiences.

Learn more about Selective distortion Visit : brainly.com/question/28012550
#SPJ11

Changes in extracellular ion levels, specifically potassium, sodium, and calcium are descriptions based on which ion is being described.

Potassium Changes in extracellular potassium levels can significantly impact both regular cardiomyocyte action potentials and pacemaker potentials. Sodiumdo alterations in extracellular sodium levels also influence cardiomyocyte action potentials. Calcium play a crucial role in both regular cardiomyocyte action potentials and pacemaker potentials.

Extracellular levels of potassium, sodium, and calcium ions have significant impacts on both regular cardiomyocyte action potentials and pacemaker potentials. Understanding the effects of these ions is vital for comprehending cardiac electrophysiology and the development of potential interventions for cardiac rhythm disorders.

To know more about extracellular here

https://brainly.com/question/29036488

#SPJ4

The researchers observed that if they interfere with the action of gp41, a harpoon-like protein that resides on the surface of HIV, then HIV is unable to bind to and enter T-cells in the blood.

What is HIV?

HIV (Human Immunodeficiency Virus) is a lentivirus that causes HIV infection, which in turn causes Acquired Immunodeficiency Syndrome (AIDS). This is a lifelong disease with no cure, but medications can help people with HIV lead long, active lives.

The HIV envelope contains two glycoproteins, gp120 and gp41, which are required for virus entry into target cells.

gp120 is responsible for binding to the CD4 molecule on host cells, while gp41 is responsible for fusion between the viral and host cell membranes and entry of the virus into the cell.

The researchers found that interference with gp41 prevents HIV from binding to and entering T-cells in the blood. When gp41's activity is impeded, the virus's ability to penetrate host cells is impaired.

Learn more about HIV here:

https://brainly.com/question/1686219

#SPJ11

The variation in forelimbs among mammalian species is mainly caused by the process of natural selection.

This is due to differences in selective pressures that act upon these species in their respective environments. The skeletons of mammalian forelimbs are similar in basic structure despite the differences in their functions. For example, the forelimbs of whales, bats, and humans are used for swimming, flying, and grasping, respectively. These variations in function are the result of natural selection acting on the ancestral structure. As mammals adapted to different environments, their forelimbs underwent structural changes that improved their ability to survive and reproduce in their respective environments.In essence, natural selection favored the development of forelimbs that were better suited to the particular environmental pressures that each mammal faced. This led to the diversification of forelimbs among mammalian species, resulting in the many variations that exist today.

Because the variations in forelimbs among mammals have arisen as a result of natural selection acting upon an ancestral structure, the similarities among them can be used to infer evolutionary relationships among species. This is the basis for the use of comparative anatomy in the study of evolutionary biology.

To know more about mammalian species visit:

https://brainly.com/question/29815948

#SPJ11

A plant converts carbon dioxide into carbohydrate is an example of chemical change.

Chemical synthesis, or, alternatively, chemical breakdown into two or more separate molecules, occurs when one material reacts with another to create a new substance. These processes are referred to as chemical reactions, and they often cannot be reversed except by other chemical reactions. A chemical change is the transformation of one substance into another, the emergence of new compounds with distinct properties, or any combination of these. It happens when two compounds mix to create a new material (synthesis or either decomposes to form more substances).

To know more about chemical change visit the link:

https://brainly.com/question/23693316?referrer=searchResults

#SPJ4

When an organism is able to better survive in an environment due to a new mutation, we can conclude that the mutation occurred randomly and was not caused by the environment. This could not happen, as mutations are always deleterious (and would not improve survivorship) (Option B)

Mutations are random events that occur during DNA replication and can be beneficial, neutral, or deleterious. It is possible for a mutation to improve survivorship if it confers an advantage in the environment. Additionally, the mutation may not necessarily be the final mutation in an adaptive walk as multiple mutations may be necessary for adaptation. The location of the mutation may also vary and could occur in coding or non-coding regions of DNA. Thus, mutations can be beneficial, neutral, or deleterious, and in this case, the mutation has improved the organism's survivorship.

Learn more about mutations: https://brainly.com/question/17130462

#SPJ11

The correct answer based on the calculation would be approximately 10.2% heterozygous individuals in the population. The correct answer is 10%.

To calculate the percentage of heterozygous individuals in a population in Hardy-Weinberg equilibrium, we can use the formula 2pq, where p represents the frequency of one allele (A) and q represents the frequency of the other allele (a).

Given that the frequency of allele A is 0.17 and the frequency of allele A is 0.3, we can calculate:

p = 0.17

q = 0.3

Now, we can substitute these values into the formula:

2pq = 2 \(\times\) 0.17 \(\times\) 0.3 = 0.102

Therefore, the percentage of heterozygous individuals in the population is 0.102 \(\times\) 100 = 10.2%.

Based on the given answer choices, none of them exactly match the calculated value.

The closest option is 1%, but it does not match the calculated percentage accurately. It's possible that there may be a typographical error or slight deviation in the provided answer choices.

The correct answer based on the calculation would be approximately 10.2% heterozygous individuals in the population.

For more such answers on Hardy-Weinberg equilibrium

https://brainly.com/question/16823644

#SPJ8

Question

The frequency of two alleles in a gene pool is 0.17 (A) and 0.3 (a.) assume that the population is in Hardy-Weinberg equilibrium calculate the percentage of heterozygous individuals in the population.

28% 10% 31% or 46%

Explanation:

the moon does not have an atmosphere so light does not scatter therefore the moon looks black.

Answer:

as its "new moon" phase the moon is always black.it happens at the time of the month when the moon passes through the same part of the sky as the sun and as such the moon's dark or unilluminated side facing the earth so there really is nothing to see

The modification that is most likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis is increasing the length of the DNA fragment, option C is correct.

During electrophoresis, DNA fragments migrate through a gel matrix based on their size and charge. Longer DNA fragments experience more resistance from the gel matrix and migrate slower than shorter fragments.

Altering the nucleotide sequence without changing the length, is less likely to affect the migration rate significantly as the charge and size of the fragment remain the same. Radioactively labeling specific bases, does not directly affect the fragment's size or charge and is unlikely to impact the migration rate. Leaving the length of the DNA fragment the same, would maintain the original migration rate, assuming other factors remain constant, option C is correct.

To learn more about DNA follow the link:

https://brainly.com/question/17568989

#SPJ4

The complete question is:

Which of the following modifications is most likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis?

A. altering the nucleotide sequence of the DNA fragment without adding or removing nucleotides

B. radioactively labeling the cytosine bases within the DNA fragment

C. increasing the length of the DNA fragment

D. leaving the length of the DNA fragment the same

Answer:

The answer is D.

Explanation:

The ceramic marble has half the mass of the steel marble, the kinetic energy increases with increasing mass, hence the correct option is B.

The form of energy that an object has as a result of its motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it.

Due to the fact that kinetic energy is related to the square of the speed, doubling the speed results in a four-fold increase in kinetic energy. The momentum does double with a speed increase, as we will discuss in the following lesson.

Therefore, the ceramic marble has half the mass of the steel marble, the kinetic energy increases with increasing mass.

Learn more about kinetic energy, here:

https://brainly.com/question/26472013

#SPJ2

Among the frequent contributors of water contamination include sewage disposal, industrial chemical spills, agricultural runoff, etc.

A secondary pollutant is created when other pollutants (primary pollutants) react with the atmosphere, rather than being directly released as such.

The primary reasons of water pollution are microorganisms, parasites, insecticides, pharmaceuticals, plastics, fecal matter, radioactive matters, fertilizers, and pesticides.

Therefore, Pollutants, both primary and secondary. A primary pollutant is a substance that is released into the air directly from a source.

Learn more about water pollutant here:

https://brainly.com/question/19920929

#SPJ1

In electron micrographs, portions of the endoplasmic reticulum (ER) appear rough on the edges due to the presence of ribosomes attached to their surface. The ribosomes are small structures that are involved in protein synthesis, and they attach to the ER to perform their function.

The ER is a network of membranes that forms a complex network throughout the cytoplasm of eukaryotic cells.

The rough ER is specifically involved in protein synthesis, folding, and modification. The ribosomes on the surface of the rough ER synthesize proteins that are then translocated into the ER lumen, where they undergo further processing, such as glycosylation and folding. These modified proteins are then transported to other cellular compartments or secreted from the cell.

The rough appearance of the ER in electron micrographs is due to the ribosomes that are densely packed on its surface. The ribosomes give the ER a granular appearance, and the roughness is more prominent in areas where protein synthesis is more active. Therefore, the roughness of the ER can provide important information about the protein synthesis activity and metabolic status of a cell.

To know more about endoplasmic reticulum click here:

brainly.com/question/13118914

#SPJ11

The process of fiber digestion in sheep, horses, rabbits, and ostrich differs in efficiency and has its similarities and contrasts. Ostrich is the least efficient among other species.

While some species are efficient in digesting fiber, others are not. The rumen is the site of fiber digestion in sheep. Bacterial enzymes in the rumen break down fiber into soluble components.

A horse, on the other hand, is classified as a hindgut fermenter. Their digestion of fiber takes place in the hindgut rather than in the foregut like ruminants do. The cecum and large intestine are responsible for breaking down fiber into digestible components.

The hindgut digestive system in horses makes them less efficient at digesting fiber than ruminants. Rabbits, which are also known as hindgut fermenters, have a large caecum where bacteria aid in the digestion of fiber. They are known for their ability to digest high-fiber diets.

As a result, rabbits have more efficient fiber digestion than horses. Ostrich is classified as a non-ruminant and non-hindgut fermenter. They digest fiber in their small intestines using bacterial enzymes.

Ostriches have the lowest efficiency in fiber digestion compared to sheep, horses, and rabbits because of their non-ruminant and non-hindgut fermenter status. Thus, in terms of efficiency, sheep are the most efficient in digesting fiber because of the presence of the rumen, while ostriches are the least efficient in digesting fiber because they don't have the advantage of fermentation.

Learn more about fiber: https://brainly.com/question/29990631

#SPJ11

An AC (acromioclavicular) joint separation, the most typical kind of shoulder separation, occurs when the ligament that attaches the collarbone (clavicle) to the shoulder blade (scapula) is either torn or extended.

This ligament is identified as the acromioclavicular ligament.

When this ligament is harmed, the joint can become weak, causing pain and making it difficult to move the shoulder. Three grades of AC joint separations exist, depending on the severity of the injury.

Grade 1 and 2 injuries involve stretching of the ligament, and grade 3 injuries involve a complete tear of the ligament. In addition to the ligament damage, shoulder separations can also cause damage to the muscles and tendons that surround the AC joint.

Treatment for a shoulder separation typically entails rest, ice, and physical therapy. When the injury is more serious, surgery may be necessary.

To learn more about ligament visit:

https://brainly.com/question/3476768

#SPJ4

The particular individual  of the plasma membrane, such as cell-cell recognition and selective molecular transport, are carried out by proteins enmeshed within the phospholipid bilayer.

According to the fluid mosaic theory, the cell membrane is made up of a dynamic tapestry of phospholipids, proteins, and cholesterols. This movement aids the cell membrane in maintaining its function as a partition between the interior and outside surroundings of the cell.

The phospholipid bilayer visible in the opening image is said to contain integral membrane proteins, according to the Fluid Mosaic Model. The chemical makeup of the phospholipids in a polar environment leads to the formation of the bilayer.

To know more about individual  visit:-

https://brainly.com/question/22234877

#SPJ4

Answer:

huh

Explanation:

The selection index based on own performance is a useful tool for evaluating the potential response to selection for multiple traits.

A) A selection index is a technique used in animal breeding to identify the best breeding animals based on a selection of traits. This index is used to estimate the breeding value of an animal in a breeding program.

B) Economic values are used to assign relative economic importance to different traits in a breeding program. The predicted response, on the other hand, is the expected improvement in a trait due to selection for that trait. It is calculated by multiplying the selection differential by the heritability.

C) The economic weights are appropriate for the breeder’s goal since they reflect the breeder’s desire to increase weight while decreasing feed intake. A positive response for feed intake may be due to the genetic correlation between the two traits. Since the genetic correlation between weight and feed intake is positive, selection for weight will indirectly lead to an increase in feed intake.

D) To design an index such that there was no response for feed intake, the index would need to be designed so that it only selects animals based on their weight and not their feed intake. This would involve assigning a weight of zero to feed intake in the selection index. This would mean that only animals with the highest weight would be selected, regardless of their feed intake.

However, the economic weights used in the index should be appropriate for the breeder’s goal in order to maximize the desired response. In this case, the positive response for weight suggests that the economic weights used are appropriate, but the negative response for feed intake suggests that a different design may be necessary to achieve the breeder’s goal of increasing weight while reducing feed intake.

Learn more about selection index visit:

brainly.in/question/16851980

#SPJ11

Answer:

Independent Variable: Fertilizer

Dependent Variable: Plant Growth

Experimental Group: Group B

Control Group: Group A

Explanation:

The fertilizer is the independent variable because it is the variable that is being tested, this is what the reasercher controls.

The dependent variable is the growth of the plant because this is the result of what is being tested, this is the variable being measured.

The experimental group is Group B because it is the one with the independent variable is being tested

The control group is Group A because nothing out of the ordinary is being done to this group, this group allows a basis of measurment for the researcher.

Answer:

B. The heart beat and pulse rate may change, but are always equal.

Hope this helps :D Have a fantastic day

Answer:

When humans reproduce, there are two parents involved. DNA must be passed from both the mother and father to the child. Humans cannot reproduce with just one parent; humans can only reproduce sexually. But having just one parent is possible in other eukaryotic organisms, including some insects, fish, and reptiles. These organisms can reproduce asexually, meaning the offspring ("children") have a single parent and share the exact same genetic material as the parent. This is very different from reproduction in humans. Bacteria, being a prokaryotic, single-celled organism, must reproduce asexually.

A person can have between 2,000 to 10,000 taste buds in his or her mouth.

Taste buds are small sensory organs on the tongue, soft palate, and other parts of the mouth that allow us to detect different tastes such as sweet, sour, salty, bitter, and umami.

Each taste bud is made up of clusters of cells called taste receptors, which respond to specific chemicals in food and drink.

The number of taste buds that a person has can vary widely, with some individuals having as few as 2,000 and others having as many as 10,000.

The number of taste buds tends to decline with age, as well as in individuals who smoke or consume excessive amounts of alcohol.

The distribution of taste buds across the tongue is not uniform, with some areas (such as the sides and back of the tongue) containing more taste buds than others.

The density and sensitivity of taste buds can also vary between individuals, which may help explain why some people are more sensitive to certain tastes or flavors than others.

To know more about taste buds, refer here:

https://brainly.com/question/29894350#

#SPJ11

Assuming height of the bar represents altitude, the bar representing Han Chinese will be shorter compared to that representing Tibetans since Han Chinese live at lowlands.

Tibetans and Han Chinese are thought to originate fro. same ancestors.

However, while the Han Chinese lived in lowland areas, Tibetans split off drom the Han Chinese about 2750 years ago and went on to live in high altitudes.

Natural selection helped Tibetans to evolve to adapt to high altitudes with several mutations occurring in their genes which are mostly related to use of oxygen by the body.

Assuming height of the bar represents altitude, the bar representing Han Chinese will be shorter compared to that representing Tibetans.

Learn more about natural selection at; https://brainly.com/question/524043

Answer:

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Explanation:

Carbohydrates are made up of monosaccharides, which are simple sugars such as glucose. When two or more monosaccharides are joined together, they form a disaccharide or a polysaccharide. Polysaccharides are long chains of monosaccharides that are joined together by glycosidic bonds.

In order to break apart a carbohydrate made of 27 glucose monomers, you would need to hydrolyze the glycosidic bonds that hold the monomers together. Hydrolysis is the process of breaking a chemical bond by adding water molecules. For each glycosidic bond that you want to break, you would need to add one water molecule.

Since a carbohydrate made of 27 glucose monomers would have 26 glycosidic bonds (one less than the number of monomers), you would need to add 26 water molecules to break it apart. This is because each water molecule would be used to hydrolyze one of the 26 glycosidic bonds in the carbohydrate.

It's worth noting that the number of water molecules needed to break apart a carbohydrate would depend on the length of the carbohydrate and the type of glycosidic bonds it contains. For example, a carbohydrate with more monomers or with different types of glycosidic bonds might require more water molecules to be hydrolyzed.

learn more from here:

https://brainly.com/question/1403345