List the layers in order from oldest to youngest

A ""hot spot"" appears darker than other areas on a bone scan and indicates an area of increased metabolism.

Nuclear imaging is used during a bone scan to assist identify and monitor various bone diseases. In order to observe internal structures like bones, such as the bones in the body, nuclear imaging uses small amounts of radioactive chemicals (radiotracers), a particular camera that can detect the radioactivity, and a computer. These could be metabolic or other chemical activity levels. Hot spots are regions with higher intensity. These might exhibit high levels of radiotracer concentrations as well as intense chemical or metabolic activity.

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A new animal is discovered that is more sensitive to pain in its toes than its fingers. If we were to examine the brain of this animal we would notice that the parietal lobe would have more brain area devoted to the toes than the fingers.

The parietal lobe is one of the major lobes in the brain, roughly located at the upper back area of the skull.It is found on both the left and right hemispheres of the cerebral cortex.

Somatosensory information from the body, such as touch, pain, temperature, and the perception of limb position, is processed by the parietal lobes. The parietal lobes play a role in integrating data from several modalities, just like the temporal lobes do. Parietal lobe houses the primary somatic sensory cortex, a part of the brain that processes information from various parts of the body.

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Answer:

Moisture, hormone production, and enzyme activity. For seeds to germinate, they need to imbibe water. For this to occur, sufficient moisture must be present. A warmer climate may increase evaporation and decrease moisture, which would negatively affect germination.

When cells makes a new compound, such as glycogen from many glucose molecules, usable energy is needed and is obtained by removing a phosphate group from ATP, producing energy plus ADP plus phosphate.

This is referred to as adenosine triphosphate and is the energy currency of the cells.

This is  usually formed from the synthesis of ADP and a phosphate group thereby making it the most appropriate choice.

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The process seen in the image is hay harvesting, which is widely used as fodder.

Hay is a viable alternative to be used as fodder (for animals to feed in the troughs) if there is not enough pasture or the climate is unfavorable for grazing. It is also used for animals that must be kept in the stable or barn (eg when the females are pregnant).

With this information, we can conclude that Hay is a mixture of mown and dried plants that can be used as fodder.

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Answer:

C

Explanation:

A law is an observation; a theory is the explanation of that observation.

source: http://www.differencebetween.net/miscellaneous/culture-miscellaneous/difference-between-theory-and-law/

In science, a scientific law is a descriptive statement or mathematical equation that describes a natural phenomenon or pattern consistently observed in the natural world.

The correct statement is option c.

The statement explains what happens and is often based on empirical evidence obtained from repeated observations and experiments.

On the other hand, a scientific theory is a well-substantiated and comprehensive explanation of some aspect of the natural world. It goes beyond mere observation and provides an understanding of why and how a particular phenomenon occurs. A scientific theory is supported by a substantial body of evidence, and it can be used to make predictions about future observations or experiments.

Scientific laws and theories are both essential components of scientific understanding, and they are not ordered in terms of coming before or after each other.

Hence , C is the correct option

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If a person is not able to show stress in dangerous situations and lacks fear, there might be issues with an area of their brain known as the amygdala.

The amygdala is an almond-shaped structure which can be found in the medial temporal lobe of the brain, right in front of the hippocampus. It is a region of the brain which primarily deals with regulating our emotional processes like fear response but is also responsible for other strong emotions like aggression and pleasure. In case the amygdala gets damaged, it impairs the emotional memories of the person and also results in poor decision making.

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The correct answer choice which is true about neurons is Neuron A fires strongly and neuron B fires weakly, which leads to an increase in their connection strength

Neurons can simply be defined

as the fundamental and functional units of the nervous system. Neurons are also known as nerves.

There are basically three classes of neurons: These are

So therefore, neuron A fires strongly and neuron B fires weakly, which leads to an increase in their connection strength

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DNA is single-stranded. There are two types of DNAs, fiber polymer(ssDNA) and double-stranded polymer (dsDNA). Consequently, the polymer binding proteins typically contain fiber DNA-binding proteins (SSBs) and double-stranded DNA-binding proteins(DSBs).

Single-stranded DNA binding proteins (SSBs) and double-stranded DNA binding proteins (DSBs) are two different types of DNA binding proteins that participate in many biological processes.

While SSBs typically serve roles in DNA replication, recombination, and repair, among other processes, DSBs typically operate as transcriptional factors to control the expression of the genes. For the study of protein functions, knowing a DNA binding protein's binding specificity is useful.

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The dicer enzyme processes dsRNA and forms siRNAs, which suppress the expression of target genes by cutting mRNA. 1) siRNA 2) RNA.

siRNA means small interfering RNA. This is a silencing RNA molecule involved in the RNA interference mechanism, intervening in the expression of a specific gene.

siRNAs are complementary double-stranded RNA molecules composed of about 20-21 nucleotides. siRNA originates from a long double-stranded RNA (dsRNA).

The dicer enzyme cuts dsRNA molecules and produces siRNA. siRNAs suppress the expression of target genes when cutting messenger RNA.

siRNAs suppress the expression of target genes by cutting the complementary messenger RNA (mRNA) into two halves. This is accomplished by the interaction of the siRNA with the RISC complex (RNA-induced silencing complex).

The two mRNA halves are later degraded by the cellular machinery, leading to the suppression of the gene expression.

siRNAs also participate in other pathways related to RNAi, such as in antiviral defense or in the chromatin structure organization.

RNA interference is a mechanism of eukaryotic gene regulation. In this mechanism, the enzyme dicer cuts dsRNA into smaller fragments called (1) siRNA, which form a complex with RISC and degrade specific (2) RNA.

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Answer:

bones protect vital organs

Explanation:

there are approx 200+ bones only on average, hence the first is out

bike is produced in the bike duct which acts to break down fats into simpler substance for the body to intake

red blood cells are produced and stored in the bones and not carbohydrates

the smallest bone is found in your ear, hence the last one is out

According to the research, most mycoses are difficult to treat because to determine the responsible fungus it is necessary to culture the lesions.

They are skin conditions resulting from parasitization by "fungi"; these are vegetables that do not carry out the phenomenon of photosynthesis.

They are caused by fungi belonging to the genera Epidermophyton, Microsporum and Trichophyton.

Therefore, we can conclude that according to the research, most mycoses are difficult to treat because to determine the responsible fungus it is necessary to culture the lesions.

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Injury to cervical vertebra c 3-c 4 is particularly problematic because C) the phrenic nerve that serves the diaphragm receives its fibers from here.

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Answer:

Across the Chesapeake Bay watershed, 23 percent of the land is used for agriculture and almost 12 percent has been developed. Most of the remaining land is forested.

Proportion of the population will be heterozygous is 0.48

Let's start with the basic Hardy-Weinberg equations first.

p + q = 1 and p^2 + 2pq + q^2 = 1

With "p" being the dominant allele and "q" being the recessive allele

We know that 16% (or 0.16) show the recessive trait. This means that the fraction of the population with the recessive trait, q^2 is 0.16

With the value for q^2, q can be calculated

What follows is that q = 0.4

With this knowledge "p" can be calculated 1 - q= p

which results in "p" being 0.6

This 0.6 is the frequency at which the dominant allele is present in the population

heterozygous = 2pq = 2 (0.6 x 0.4) = 0.48

Hence, proportion of the population will be heterozygous is 0.48

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Diastole is the process that ensures mitral and tricuspid valve closure after the ventricles are filled with blood.

Cardiac cycle events can be divided into diastole and systole. Diastole represents ventricular filling, and systole represents ventricular contraction/ejection. Systole and diastole occur in both the right and left heart, though with very different pressures.

Diastole begins with the closing of the aortic valve (or pulmonic) and ends with the closing of the mitral valve (or tricuspid). This period encompasses the ventricular relaxation and filling.

Diastole represents when the blood vessels return blood to the heart in preparation for the next ventricular contraction.

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The statement is True.

Dyspnea has a multi-factorial origin, resulting from bronchospasm or vasospasm, disturbances in pulmonary circulation, immobility or diminished respiratory excursion of the diaphragm, atelectasia and/or pulmonary infarction, anoxia, or impairment of cardiac function.

Dyspnea, chest pain, and cough are the most frequent symptoms of Pulmonary Embolism(PE), while fever, tachycardia, abnormal pulmonary signs, and peripheral vascular collapse are the most common physical findings.

Pulmonary embolism (PE) occurs when a blood clot gets stuck in an artery in the lung, blocking blood flow to part of the lung. Blood clots most often start in the legs and travel up through the right side of the heart and into the lungs. This is called deep vein thrombosis (DVT).

Clot in the lung circulation (pulmonary embolus): Breathlessness is usually sudden and associated with rapid breathing and may be accompanied by chest pain.

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Inadequate dietary vitamin D or its deficiency leads to malabsorption of calcium. Nutritional disorder leads to the rare disease rickets, which causes bones to become soft and bend in children. In adults, vitamin D deficiency leads to osteomalacia, which causes weak bones, bone pain and muscle weakness.

The body needs vitamin D to properly absorb calcium and phosphorus from the diet. However, keeping the right quantities of calcium and phosphorus in bones is challenging when vitamin D levels are low.

The two sources of vitamin D are-

There are other disease conditions which lead to poor absorption of vitamin D-

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Postmortem and positron emission tomography have shown that microglial cells play a pathophysiological role in schizophrenia.

We postulated that the previously mentioned glutamatergic impairments in the hippocampus of schizophrenia patients may be related to the microglial synthesis of quinolinic acid (QUIN), an endogenous N-methyl-d-aspartate receptor (NMDAR) agonist. Reduced microglial immunoreactivity for endogenous NMDA receptor agonist quinolinic acid in the hippocampus of schizophrenia patients. We measured the number of QUIN-immunoreactivity microglial cells in the CA1, CA2/3, and dentate gyrus (DG) regions of the posterior hippocampus formation in schizophrenia patients and matched controls. HLA-DR, a popular microglial surface marker, was further immunostained in nearby histological sections. In the CA1 hippocampus sub region of schizophrenia patients compared to controls, fewer QUIN-immunoreactivity microglial cells were seen (left p=0.028, right p=0.018). In the CA2/3 and DG areas, no notable diagnosis-dependent alterations were seen. Potential confounding factors such as age, disease duration, autolysis time, psychotropic medication, and hippocampus volume were taken into account while analyzing these results. There were no variations in the overall density of microglial cells linked to diagnosis (HLA-DR expression). Our results imply that schizophrenia is related with decreased microglial QIUN content in the hippocampus CA1 region. We surmise that this connection could be a factor in schizophrenia patients' hippocampus' decreased glutamatergic neurotransmission.

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The correct matching is as follows:

Blood vessels are those vessels a re tubes in which blood in the body flows.

The blood vessels of the body include, veins, arteries and capillaries. Larger blood vessels include the aorta

The correct matching is as follows:

In conclusion, blood vessels transport blood throughout the body.

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From the table, we can see that  P and Q represent water. (Option B)

We know that the liquid range of water is 0 - 100 degrees Celsius. Within this temperature range, water exists as a liquid substance.

Looking at the table we can see that the temperatures of P and Q are 50 and 100 degrees Celsius respectively hence both P and Q represent water.

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The percentage of the orignal uranium that remains after two half-lives is 25%

N = N₀ / 2ⁿ

N = 100 / 2²

N = 100 / 4

N = 25%

Thus 25% of the original sample remains

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On each side of the skull, the Squamosal suture joins the parietal bone with the temporal bone.

The squamosal or squamous suture is the cranial suture between the temporal and parietal bones bilaterally. From the pterion, it extends posteriorly, curves inferiorly and continues as the parietotemporal suture. The squamous suture is the connecting joint in the skull between the parietal bone and the lower portion of the temporal bone called the par squamosa. Edges of the squamous suture overlap in a scale-like formation. It is located just above the ears on both sides of the head. The squamous suture forms the joint of the skull between the squamous part of the temporal bone and the inferior aspect of the parietal bone.

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According to  the Dalton's atomic theory, we can see that there are two atoms that compose the water molecule.

The atomic theory states that matter is made up of small particles called atoms. These atoms are capable of independent existence and can take part in chemical reaction.

From the Dalton's atomic theory, we can see that there are two atoms that compose the water molecule. These atoms are hydrogen atom and the oxygen atom.

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Answer:

Angiosperms

Explanation:

Answer:

A. Angiosperms

Hope this helps!

Explanation:

During bleeding, both formed elements (platelets, white blood cells, red blood cells) and plasma are lost from the circulatory system. They are lost proportionally, so initially there is no change in hematocrit.

Hematocrit is the percentage of the blood volume made up of elements (Hct = cell volume/blood volume). During dehydration, only water and electrolytes are lost, and the number of cells remains constant - the same number of cells in a smaller volume leads to an increase in hematocrit. When the body tries to restore blood volume, the first thing to recirculate is water from the ECF and this increases the amount of water without increasing the amount of red blood cells, so the compensatory mechanism causes the hematocrit to fall.

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The coagulation pathways that begins with the release of tissue factor from damage tissues is Extrinsic pathways. Its is a pathway of blood coagulation activated by endothelial tissue .

The clotting of blood is two pathways - intrinsic and extrinsic pathways.Extrinsic pathway is activated by any external trauma or external injury which causes blood to escape from the tissues.

Coagulation pathways is path which allows for rapid healing of injury and prevent from bleeding or other bacterial infection.coagulation also known as clotting , the process by which blood change into gel from liquid.This mechanism of coagulation involves activation, adhesion and aggregation.

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A function prototype eliminates the need to place the function definition before all calls to the function.

The variable that are defined inside the function but not out side the function are local variable and global variable . A static variable that is defined within a function is initialized only once, the first time the function is called. A function prototype is a definition that is used to perform type checking on function calls when the EGL system code does not have access to the function itself. We prototype the function to tell the compiler about the number of arguments and about the required datatypes of a function parameter, it also tells about the return type of the function.

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Answer: c. Bird droppings that contain seeds from a different location

Cardiac triggering monitors cardiac motion by coordinating the rf excitation pulse with the R-wave of cardiac systole.

A heart monitor is useful for measuring the rate of your beats per minute, especially if you do some physical activity. Continuous monitoring during practice helps to manage the functioning of the organism, visualizing when the heart beats increase and decrease

Through the electrocardiogram (ECG), the multi-parameter vital signs monitor follows the patient's heartbeat, which are captured through the ECG cable that is connected to some points on the patient's chest.

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