very easy....... describe one example of a Positive Feedback Loops and one example of a Negative Feedback Loops. The examples have to be in the human body. In your examples be sure to explain why your examples are positive/negative.- thank you for your help :)

The evolutionary innovation associated with cartilaginous fish such as sharks is the development of a cartilaginous skeleton instead of a bony skeleton.

Cartilaginous fish, including sharks, rays, and skates, possess a unique evolutionary adaptation in the form of a cartilaginous skeleton. Unlike most other vertebrates, which have a bony skeleton composed of calcium-based bones, cartilaginous fish have a skeleton made primarily of cartilage. This cartilaginous structure provides several advantages for these organisms.

First, a cartilaginous skeleton is more flexible and lightweight compared to a bony skeleton. This flexibility allows cartilaginous fish to navigate through water with greater agility and maneuverability. Additionally, the lighter weight of the cartilaginous skeleton allows these fish to remain buoyant in water, reducing the energy required for swimming.

Moreover, the cartilaginous skeleton provides durability and resilience, enabling cartilaginous fish to withstand the pressures and stresses of their aquatic environment. Cartilage is a strong and flexible connective tissue that can absorb shock and resist bending or breaking.

Overall, the evolutionary innovation of a cartilaginous skeleton in cartilaginous fish represents an adaptation to their aquatic lifestyle, providing them with the necessary characteristics for efficient movement and survival in water.

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Answer: Genetic analyses have played a crucial role in protecting endangered species such as the Florida panther, prairie chickens, and elephants. These analyses have helped conservationists understand the genetic diversity, relatedness, and health of these populations, which can inform management strategies to ensure their survival.

Explanation:

Answer:

A) the somatic nervous system and the autonomic nervous system.

Explanation:

These are two of the nervous system we sometimes get...

A second messenger system is necessary for nonsteroid hormones because these hormones are unable to pass through the cell membrane and therefore must use an indirect method of influencing the cell.

Second messenger systems provide a pathway by which nonsteroid hormones can send signals to the cell that allow it to be altered. The initial signal is received by a receptor protein, which activates a G protein that in turn activates an enzyme. This enzyme produces a secondary messenger molecule, which then activate the cell, influencing its function or structure.

The main idea behind the second messenger system is to amplify a signal that is too weak to be detected by the cell without these steps. Secondary messengers are therefore essential for hormones that can't pass through membranes to have an effect.

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The best option that describes a benefit of conducting a comparative investigation over collecting data from the Internet. While gathering the ongoing data from the Internet takes more time, comparative investigations may be repeated quickly.

The correct option D.

Comparative investigations involve gathering data on several populations or creatures under various circumstances in order to draw comparisons. Example: Examining the hue and texture of four distinct pebbles using a hand lens.

While experimental investigations include factors that can be controlled, comparative investigations allow for the inclusion of a broad variety of variables but lack a control group. Both comparative and experimental research are intended to provide scientific insights.

In order to make a comparison, comparative research may entail collecting data on various creatures, items, or traits or gathering data under various circumstances (e.g., seasons, temperatures, places).

The complete question is:

Which statement best describes a benefit of conducting a comparative investigation over collecting data from the Internet?

A. A comparative investigation can be repeated in a short time while collecting the continuous data from the Internet takes longer.

B. Conducting a comparative investigation is always less expensive than an investigation in which data is obtained from the Internet.

C. Conducting a comparative investigation is always less time consuming than obtaining data from the Internet.

D. A comparative investigation can provide a wider range of data than can be obtained from the Internet.

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Answer:

the equator receives the most solid residential for unit area because sunlight arise almost parapendicular towards surface their

Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids.

Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.

Answer:

Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids. Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.

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..nok nok tera bhai aaya

The following statement is false or incorrect: "A nerve impulse occurs if the excitatory and inhibitory effects are equal." Option A is correct.

A nerve impulse, also known as an action potential, is a brief electrical signal that travels along the membrane of a neuron, allowing for rapid communication within the nervous system. The nerve impulse is initiated by the opening of ion channels in response to a depolarizing stimulus, such as the binding of a neurotransmitter molecule to a receptor on the neuron's membrane.

A nerve impulse, occurs when the excitatory effects on the neuron are greater than the inhibitory effects and reach a threshold level of depolarization, triggering the opening of voltage-gated ion channels and resulting in the rapid depolarization of the membrane potential. If the excitatory and inhibitory effects are equal, the membrane potential will not reach the threshold for an action potential, and no nerve impulse will occur.

Hence, A. is the correct option.

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--The given question is incomplete, the complete question is

"Which of the following is false or incorrect? Options: A) a nerve impulse occurs if the excitatory and inhibitory effects are equal. B) an inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. C) an excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold."--

Don't take me precisely for the answer,

but I believe its transform boundry

N-acetylcysteine (NAC) is often administered for the treatment of acetaminophen overdose to help prevent the toxic metabolite, NAPQI, from accumulating in hepatocytes.

N-acetylcysteine (NAC) is often administered for the treatment of acetaminophen overdose to help prevent the toxic metabolite, NAPQI, from accumulating in hepatocytes. This is most likely because NAC regenerates the glutathione that is depleted as a result of acetaminophen metabolism. As a result, NAC helps to avoid liver damage caused by the NAPQI in overdose. NAC has been shown to be effective in the treatment of acetaminophen-induced hepatotoxicity, according to studies. The early administration of NAC after an acetaminophen overdose can be beneficial because it may improve the outcomes of patients who have ingested toxic amounts of the medication. The administration of NAC should be done as soon as possible after an overdose, and it should be continued until the patient's clinical status improves.

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The upper surface of the fern is more shinier than the lower surface.

The light-tolerant side of the leaf is also shiny, and this is because of a thick waxy cuticle. The shade-tolerant side of the leaf also has a cuticle but if we follow it logically, the light-tolerant side of the leaf needs more protection from heat evaporation because it's always being hit by light.

Answer:

A

Explanation:

Option A is the orientation of phospholipids that best represents the  phospholipid bilayer of the plasma membrane.

The phospholipid bilayer (the lipid layer) is known to be a thin polar membrane. It is usually made of two layers of molecules that are lipids. These are flat sheets which actually form a continuous barrier around the cells.

The phospholipid is a lipid which is made up of glycerol, two fatty tails and the head is phosphate-linked. The tails point inward and are arranged in a way  called phospholipid bilayer.

Phospholipids are great for building the protective barrier around the cell of the body.

Answer:

Cells

Explanation:

The cell is the basic structural and functional unit of life. Cells are independent, single-celled organisms that take in nutrients, excrete wastes, detect and respond to their environment, move, breathe, grow, and reproduce.

An example of a plant virus is the Tobacco mosaic virus (TMV), which when infecting plants, cause them to have an stunted and irregular growth of their tissues, such as leaf and stems, which provokes the plant to not developing well

Red and yellow bone marrow are two types of bone marrow found in the human body, and they differ in their function and composition.

Red bone marrow, also known as myeloid tissue, is responsible for the production of red blood cells, white blood cells, and platelets. It is located mainly in the flat bones of the skull, pelvis, ribs, sternum, and vertebrae. Red bone marrow contains stem cells, which give rise to the blood cells, and various other types of cells that support and nourish the stem cells. Yellow bone marrow, also known as fatty tissue, is found mainly in the long bones of the arms and legs. It consists mainly of fat cells, which store energy, and a few scattered blood cells. Yellow bone marrow does not produce blood cells, but it can be converted into red bone marrow if the body needs to increase its production of blood cells. The conversion of yellow bone marrow into red bone marrow is a natural process that occurs in response to certain conditions, such as severe bleeding or anemia.

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Answer:

B

Explanation:

The correct statements are:

In Step 1, she correctly distributed -3 to the parentheses.

In Step 2, she combined like terms 5k and 2k.

In Step 3, she applied the multiplication property of equality to isolate the variable term

Analyzing Lorena's work, we can determine which statements are correct:

In Step 1, she correctly distributed -3 to the parentheses: This statement is correct. When distributing -3 to the terms inside the parentheses, Lorena should multiply each term by -3, which is the correct application of the distributive property.

In Step 2, she combined like terms 5k and 2k: This statement is correct. Combining like terms involves adding or subtracting terms with the same variable and exponent. In this case, 5k and 2k are like terms, and Lorena correctly combined them to get 7k.

In Step 3, she applied the multiplication property of equality to isolate the variable term: This statement is correct. The multiplication property of equality allows multiplying both sides of an equation by the same nonzero value. By dividing both sides of the equation by 7, Lorena isolates the variable term k.

In Step 4, she should have multiplied both sides by -1 to isolate the variable: This statement is incorrect. Multiplying both sides by -1 is not necessary in this case because Lorena has already isolated the variable term k in Step 3.

Lorena found the correct solution to the linear equation: Based on the given information, we cannot determine if Lorena found the correct solution without knowing the specific equation and the result she obtained.

Therefore, the correct statements are:

In Step 1, she correctly distributed -3 to the parentheses.

In Step 2, she combined like terms 5k and 2k.

In Step 3, she applied the multiplication property of equality to isolate the variable term

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Growth rate of population is 0.50 + 0.20 = 0.70.

(Initial individuals + newborn individuals) - dead individuals = total individuals

Growth rate = (total individuals/initial individuals) * 100

Population growth rate = new percentage minus 100%

Calculations

(1000 + 500) - 200 = 1500 - 200 = 1300

Growth rate = (1300/ 1000) * 100

= 1.3 * 100

= 130%

Population growth rate = 130% - 100%

= 30% per year if it is uniform

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A DNA strand is a polymer of nucleotides connected by covalent connections between the phosphate group of one monomer and the deoxyribose of the following monomer.

They function as monomeric units of the DNA and RNA, two crucial macromolecules found in all forms of life on Earth. These nucleic acid polymers are made of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Dietary sources of nucleotides include typical foods as well as the liver's synthesis of these substances.

A nucleobase, a sugar with five carbons (ribose or deoxyribose), and a phosphate group with one to three phosphates make up a nucleotide. The four nucleobases that make up DNA are guanine, adenine, cytosine, and thymine; in RNA, uracil replaces thymine.

Additionally, at a fundamental biological level, nucleotides are crucial to metabolism. The nucleoside triphosphates, such as adenosine triphosphate, which they produce serve as a source of chemical energy.

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Exopthalamic goitre ,or exophthalamous is a sign of grave's disease.

Hence option A is correct is correct answer.

It is an autoimmune disease. It is a disease related to thyroid gland which is responsible for hyperthyroidism.

It is the name of thyroid cancer . Cause of thyroid carcinoma involves a combination of genetic and enviromental factors.

In nodular goitre, thyroid gland enlarges. The main or common cause of goitre is a lack of iodine in the diet.

It is an iodine-deficiency disease(IDD), which occurs in the areas where iodine content of soil is low .

It is also known as pituitary hyperplasia(PH). It is an absolute increase in the number of one more adenohypophyseal cell types.

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Answer:

option B is correct

Explanation:

The correct answer is genetic drift. Genetic drift refers to the random changes in allele frequencies within a population due to chance events.

Genetic drift refers to the random changes in allele frequencies within a population due to chance events. It occurs when there is a random loss or gain of alleles from one generation to the next, leading to a change in the genetic composition of the population. Genetic drift is more pronounced in small populations where chance events can have a greater impact.

In the scenario described, the random occurrence of a wildfire is causing the death of organisms in the population. This event is not specifically targeting individuals based on their traits or genetic makeup but is rather a random occurrence. As a result, the individuals that are killed by the wildfire can be considered a random subset of the population.

When individuals are killed by the wildfire, their genetic material, including the alleles they carry, is lost from the population. This can lead to a decrease in the overall genetic variation of the population since certain alleles are now eliminated. The loss of alleles due to a random event like a wildfire is an example of genetic drift.

Therefore, in this case, the variation of the population decreases due to genetic drift caused by the random occurrence of the wildfire.

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Answer:

b

Explanation:

They will pull the planet with equal gravitational force

Yes, the lithosphere are being broken down. When sediment are made lithosphere are being broken into separate sections called plates.

Lithosphere is defined as the outermost part of the earth that is made up of the mantle and the crust.

Above the lithosphere is the earth's atmosphere while beneath it is the asthenosphere.

The importance of the lithosphere to life on earth include the following:

According to geologists, the lithosphere is constantly moving in slow motion which leads to the formation of sediments. When this occurs, the lithosphere is being broken down into separate sections called plates.

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Answer:25 , 0

Explanation:

XX©(mother being the carrier as her father was hemophilia- females can only be carrier of hemophilia ) when crossed with normal father produces offspring XX©, XY, XY©, XY. Therefore chances of boy being hemophilia=(1/4)*100=25.

Chances of girl being hemophilia= 0.

Answer:

B. Axon terminals

Explanation:

hope this helps

Answer:

b

Explanation:

Answer:

rule 706

Explanation:

Answer:

The phenotype of an organism reflects all the traits that are actually expressed.

Explanation:

Phenotype refers to the visible or evidentiable characteristics that depend on the genotype, which is stored in the DNA. Phenotypic expression, mainly determined by genes, also depends on the influence of the environment on the individual.

Although the phenotype expresses characteristics such as skin, eye and hair color, height or shape of the nose, some characteristics are not entirely visible, such as specific functions or synthesized proteins.

The other options are not correct because: