true or false?
1.the greatest density of touch receptors is found on the arms an legs.
2. touch is detected by Mechanoreceptors.
3. thermoreceptors which respond to heat and cold are found in the thalamus region of the brain
4. the brain has pain receptors that respond to chemicals released during infection

Answer:

Answer: God-given rights that all people should enjoy.

Explanation:

Answer:

Sugars provide living things with energy and act as substances used for structure. When sugars are broken down in the mitochondria, they can power cell machinery to create the energy-rich compound called ATP (adenosine triphosphate).

Explanation:

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Answer: Maps with scale, compass and astrolabe, GIS, internet

Explanation:

Answer:

Maps with scale, compass and astrolabe, GIS, internet

Explanation:

Answer:

A specific question that could be used to start a scientific investigation is A. Do long droughts increase the likelihood of forest fires. This question can be tested and answered through scientific methods and data collection.

Answer:

Explanation: The interest of farmers in growing lettuce landraces is increasing, as landrace varieties prove particularly appealing to consumers striving to purchase natural, local, and high-quality produce. Although high genetic diversity exists in the landrace gene pool, this has scarcely been studied, thus hindering landrace utilization in agriculture. In this study, we analyzed the genetic diversity and the agronomic and quality traits of lettuce landraces in organic agrosystems, by characterizing 16 landraces and 16 modern varieties. We compared 29 morphological descriptors, and several traits relating to agronomic behavior (total and commercial weight, resistance to Bremia lactucae) and quality (color, chlorophyll, dry matter, and total sugars). Trials were conducted in two localities and managed following organic farming practices. Moreover, farmers and consumers participated in the phenotyping of accessions by scoring yield, resistance to B. lactucae, appearance, and taste acceptance. Results show that cultivar group, rather than the genetic origin (modern vs. landrace), is the major source of variation for all agronomic and quality traits. Batavia and Butterhead were highly homogeneous cultivar groups, while Cos accessions showed a much higher intra-varietal diversity. There was also a clear separation between modern and landrace varieties of Oak leaf. Fifteen out of the 16 evaluated landraces presented a high susceptibility to the particular B. lactucae race isolated from the experimental field - a new race not reported before. Breeding programs intended to introgress genetic resistance to this pathogen are a major priority to recover the cultivation of lettuce landraces. Principal component analysis (PCA), conducted on all quantitative data, showed a clear differentiation between modern varieties and landraces, mostly related to their commercial weight and susceptibility to B. lactucae. These seem the most important traits influencing farmer and consumer evaluations. Farmers showed a high capacity for characterizing the samples and agreed with consumers when scoring for the external appearance. It is proposed that farmers and consumers should be included in the phenotyping platforms in future research projects aiming for recovery of landraces.

Mutations induced by UV.

The answer is option A.

They have a defect of their "curly gene," that's on the second chromosome. Having curled wings is a dominant mutation, this means that only one copy of the gene must be altered to supply the disorder. In reality, if both copies are mutated, the flies do not continue to exist.

Geneticists have lengthily counseled that mutations in insect pigment genes reason for modifications in the fly's brain because these pigments are crafted from dopamine, a chemical messenger that acts in the brain.

Thru those early experiments, he located that every one of the white-eyed flies being produced was a man, there were no white-eyed women in any respect. Inheritance of the white-eye trait might have a basis within the chromosomes, greater, in particular, the sex chromosomes.

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A fossil that has one-sixteenth the normal production of carbon-14 to carbon-12 is most likely very old. This is because carbon-14 has a relatively short half-life of 5730 years, meaning that after this amount of time, half of the amount of carbon-14 in an organism or object would have already decayed.

Since the fossil being discussed has one-sixteenth of the normal production of carbon-14 to carbon-12, this would suggest the fossil is at least 8 times the half-life, or 45,840 years old. Carbon-14 is necessary to measure the age of an object, and due to the fact that this fossil has only one-sixteenth of the normal carbon-14, it can be deduced that it is very old.

It is also possible that the fossil is much older than this calculation, but because of the short half-life of carbon-14, any other amounts which may have been present before the 45,840 year mark has decayed away. In conclusion, a fossil that has one-sixteenth the normal production of carbon-14 to carbon-12 is estimated to be 45,840 years old or older.

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Answer:

Enzymes made in the salivary glands, the stomach, the pancreas and the small intestine are amylase,lipase, chymotrypsin, pepsin, trypsin, enteropeptidase, lactase and maltase.

Explanation:

Answer: the amount of protein produced

Explanation: a dominant gene produces enough of its protein to become a signiture trait even if it is paired with a recessive trait but with two or more reccesive traits your body is getting a low amount or no amount of the protein needed to become/show up as a dominant trait  

The workup for pyloric stenosis typically involves a combination of medical history assessment, physical examination, and diagnostic tests.

Here is a general outline of the workup for pyloric stenosis:

Medical History: The healthcare provider will take a detailed medical history of the infant, including symptoms, feeding patterns, and duration of symptoms. They may also ask about family history of pyloric stenosis.

Physical Examination: The healthcare provider will perform a physical examination, looking for signs and symptoms of pyloric stenosis.

Laboratory Tests: Blood tests may be conducted to assess the electrolyte levels, particularly for imbalances such as low potassium (hypokalemia) and metabolic alkalosis, which can occur due to vomiting.

Imaging Studies: The following imaging tests are commonly used to confirm the diagnosis of pyloric stenosis:

Ultrasound: This non-invasive imaging technique can visualize the thickened pyloric muscle and measure the pyloric canal length and muscle thickness.

Upper Gastrointestinal (GI) Series: Barium contrast is used to visualize the passage of barium through the pyloric region. This test can show the narrowed pyloric channel and delayed gastric emptying.

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Biodiversity rises with altitude initially before falling with height beyond that. Up until it reaches a diversity peak at about 1 300 to 1 800 m.

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The MMR (mismatch repair) system is responsible for correcting errors that may occur during DNA replication. It identifies mismatches between the two strands of DNA and corrects them by excising the incorrect base(s) and replacing them with the correct one(s).

The correct nucleotide pairing recognized by the MMR system during DNA replication are:

Therefore, option C (I and II only) is the correct answer. Option III (dAMP and dTMP) is incorrect because the correct pairing is dTMP and dAMP, as mentioned above. Option A (I only) and option D (I, II, and III) are also incorrect.

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Answer:

Explanation:

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Answer:

the process through which green plants make their own food with the help of sunlight is called as photosynthesis.

Answer:m

Explanation:

Answer:

Sometimes known as glycans, there are three common and principal types of polysaccharide, cellulose, starch and glycogen, all made by joining together molecules of glucose in different ways. It has been estimated that 50% of the world's organic carbon is found in one molecule; cellulose.

In creating nanoparticles of a smaller size, the volume of the silver nitrate,the temperature and time can be reduced,surfactant can be altered, different reducing agent and altering AgNO3. In order to create nanoparticles of a larger size, silver nitrate should be increased, the temperature and time can be increased.

In order to create nanoparticles of a smaller size, the following experiment may be conducted.                                                                      The volume of the silver nitrate solution should be reduced.                                                                                                                    The temperature and time of the reduction step can be reduced.                                                                                                       The amount of surfactant, as well as its type, can be altered.                                                                                                                    A different reducing agent can be used.                                                                                                                                              Altering the concentration of AgNO3, surfactant and/or sodium borohydride.                                                                                       In order to create nanoparticles of a larger size, the following experiment may be conducted.                                                                 The volume of the silver nitrate solution should be increased.                                                                                                       The temperature and time of the reduction step can be increased.                                                                                                 The amount of surfactant, as well as its type, can be altered.                                                                                                                         A different reducing agent can be used.                                                                                                                                                        Altering the concentration of AgNO3, surfactant and/or sodium borohydride.  

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Answer:

False

Explanation:

I just took the test

Answer:

They discover and study them

Explanation:

Answer:

A makes the most sense here.

Explanation:

Answer:

a

Explanation:

it makes more meaning.

AUC, AUU, and AUA are three codons of isoleucine in which a single base change will account for an amino acid change to methionine.

What is a codon?

Codon is a genetic code for an amino acid that is coded in the DNA sequence. Methionine and Isoleucine are amino acids, which are also encoded in the DNA sequence through codons.

Methionine is encoded by a single codon, AUG. Isoleucine, on the other hand, is encoded by three codons: AUC, AUU, and AUA. For a single base change that accounts for an amino acid change to methionine, the codon should be changed to AUG.

A single base change can change the codon and result in a different amino acid being coded. Three codons, AUC, AUU, and AUA could account for an amino acid change to methionine if there is a single base change. This is because the codons AUC, AUU, and AUA code for isoleucine but with a single base change they can code for methionine (AUG).

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Answer:

D. where freshwater streams meet the ocean and is a  breeding and feeding spot for birds and fish

Explanation:

Estuary is an area of freshwater where freshwater streams meet the ocean and also a  breeding as well as feeding place for birds and fishes. This estuary is the place of habitat for large number of biotic factors includes plants and animals such as shrimp, fish, and oysters etc. The population of these animals are lower due to human activities that cause pollution in the estuary which leads to death of animals.

Answer:d

Explanation:

Cells must move materials through the {membrane} and throughout the {cytoplasm} to maintain {homeostasis} Movement of substances is regulated because membranes are {semi} permeable. Membranes are {phospholipid} bilayers that contain embedded {proteins} The cells external environment and cytoplasm are aqueous, meaning that solutes such as {salt}are dissolved in a solvent called {water} Water may travel slowly through the membrane by {osmosis} or quickly through protein channels called {aquaporins}

Cells must move materials through the membrane and throughout the cytoplasm to maintain homeostasis. Movement of substances is regulated because membranes are semi-permeable.

Cell movement is a complex phenomenon that is primarily driven by the actin network beneath the cell membrane.

It is divided into three general components: protrusion of the cell's leading edge, adhesion of the leading edge and adhesion at the cell body and rear, and cytoskeletal contraction to pull the cell forward.

To maintain homeostasis, cells must transport materials across the membrane and throughout the cytoplasm.

Because membranes are semi-permeable, the movement of substances is controlled. Membranes are phospholipid bilayers with proteins embedded in them.

The external environment and cytoplasm of the cell are aqueous, which means that solutes such as salt are dissolved in a solvent known as water.

Water can pass through the membrane slowly via osmosis or quickly via protein channels called aquaporins.

Thus, these can be the correct answers for the given blanks.

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Answer:

Invertebrates can have bilateral or radial symmetry, or they can be asymmetrical. Bilateral symmetry means that the animal is arranged in the same way on both sides. Radial symmetry means the body parts are arranged in a circle around a central point.

A fluorometric lateral flow assay is a technique that allows for visual detection of nucleic acids using a digital camera readout.

A lateral flow assay is a simple and rapid diagnostic test that detects the presence of a specific target, such as nucleic acids. In this case, the assay incorporates a fluorometric detection system.

The nucleic acid target is typically labeled with a fluorescent probe that emits light when bound to the target. As the sample flows through the lateral flow strip, the target binds to capture probes immobilized on the strip, forming a complex.

A digital camera readout captures the fluorescence signal emitted by the bound complex. The camera detects and quantifies the emitted light, providing a visual readout of the presence or absence of the nucleic acid target.

The fluorometric approach enhances the sensitivity and specificity of the assay compared to traditional lateral flow assays, which rely on colorimetric signals. Fluorescence detection allows for lower detection limits and quantitative analysis of the target.

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Red-green colour blindness in people is an x-linked recessive trait. A carrier woman bears children with a colorblind man. They are going to have a girl. She has a 50% chance of being colorblind.

The most prevalent type of colour blindness is red-green colour blindness. This disorder, also known as deuteranopia, is probably congenital, which means that you are born with it. You can find it challenging to distinguish between distinct hues of red, green, and yellow if you suffer from this sort of colour blindness.

People who are "red/green colour blind" have a tendency to mistake any colour that contains some red or green as well as other colours. Because they are unable to'see' the red component of the colour purple, people who are red/green colorblind are more likely to confuse the colours blue and purple.

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Answer:

d. The beaches on which turtles currently lay their eggs may go underwater.

Explanation:

According to the graph, the beaches on which turtles currently lay their eggs may go underwater due to increase sea level with the passage of time. In the graph, we can see that sea level increases from 1880 to 2014 and the main reason for this increase is the climate change. Due to global warming the water present on the glacier starts melting and thus increase in sea level occurs so the beaches on which turtles currently lay their eggs may go underwater.

Answer: Water is an excellent solvent meaning solutes will freely diffuse and be dispersed in a solution of water very quickly.

Explanation: Water has many properties that allow it to break up and dissolve many materials in addition to its natural ability to spread out and disperse a lot of solutes meaning that water might not literally chase milliosmoles, but it will move them around very quickly and efficiently.

The statement "Water chases milliosmoles" refers to the process of osmosis, which is the movement of water across a semipermeable membrane in response to differences in solute concentration between two solutions.

In osmosis, water moves from an area of lower solute concentration to an area of higher solute concentration, in an attempt to equalize the concentration of solutes on both sides of the membrane.

When a solution contains solutes, such as ions or molecules dissolved in water, it creates an osmotic pressure. The number of particles (ions or molecules) in a solution is expressed in terms of osmoles. A milliosmole (mOsm) is equal to one-thousandth of an osmole, and it is commonly used to measure the concentration of solutes in physiological and biological contexts.

If there is a difference in the concentration of solutes between two solutions separated by a semipermeable membrane, water molecules will move from the solution with lower solute concentration (lower osmolality) to the solution with higher solute concentration (higher osmolality). This occurs until the solute concentrations on both sides of the membrane reach equilibrium, and the osmotic pressure is balanced.

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In dogs, the allele for curly hair (C) and the allele for straight hair (S) exhibits incomplete dominance. Heterozygotes have wavy hair. A dog that has wavy hair is crossed with a dog that has straight hair. So, the expected genotypic and phenotypic ratios of the offspring will be 1:2:1 and 2:1.

This implies that the heterozygotes (CS) will certainly have a distinctive phenotype of curly hair.

When a dog with wavy hair (CS) is crossed with a dog with straight hair (SS) we can identify the expected genotypic and phenotypic proportions of the offspring using Punnett squares.

By crossing them we can create a Punnett square:

  C     S.

-----------------.

C|CC  CS.

-----------------.

S|SC   SS.

From the Punnett square, we can see that the possible genotypes of the offspring are CC, CS, SC, and SS.

The phenotypic ratios can be determined by analyzing the genotypes. Given that the allele for curly hair (C) shows insufficient dominance, both CC and CS genotypes will result in wavy-haired phenotypes. Only the SS genotype will result in straight hair. For that reason, the phenotypic proportion will undoubtedly be 2:1 (wavy-haired: straight-haired).

To sum up, the expected genotypic ratio of the children will certainly be 1:2:1 (CC: CS: SS) and the phenotypic proportion will certainly be 2:1 (wavy-haired: straight-haired).

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In incomplete dominance, there is a third phenotype expressed by heterozygous individuals. This phenotype is a mixture between both extreme phentoypes. Genotyic ratio 1:1 ⇒ 1/2 CS : 1/2 SS. Phenotypic ratio 1:1 ⇒ 1/2 wavy : 1/2 straight.

Incomplete dominance is the inheritance pattern in which neither of the involved alleles completely dominates over the other one.

Heterozygous descendents possess an intermediate phenotype between the two homozygous dominant and recessive individual's phenotypes.

Heterozygous individuals are different from both the dominant and recessive homozygous parental and expresses as a mixture of both of the homozygous progenitors.

In the exposed example,

Cross: A dog that has wavy hair with a dog that has straight hair.

Parentals) CS   x   SS

Gametes) C   S    S    S

Punnett square)    C      S

                      S     CS    SS

                      S     CS    SS

F1) 50% o the progeny is expected to have wavy hair and be heterozygous CS

    50% of the progeny is expected to have straight hair and be homozygous SS

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