Children tend to grow more slowly and so become smaller in low SES settings, according to studies from numerous nations.
Food allergies, iron deficiency, tooth decay and constipation are common nutritional problems of preschoolers.
Children tend to grow more slowly and so become smaller in low SES settings, according to studies from numerous nations.Between the ages of 2 and 6, this growth rate is slower than that of infancy and is accompanied by a decreased appetite. Children need a lot of nutrients to help their bodies develop all the necessary organs, tissues, and functions, and the type of nutrition they receive can have a significant impact on their health. The cuisine a youngster consumes can have an impact on everything from behavioral habits to fundamental brain function.Some toddlers have dietary issues, which may have an immediate and long-term impact on their well-being, development, and growth.Constipation, dental decay, iron deficiencies, and food allergies are all frequent. iron deficiency is a major nutritional problem in preschoolers.learn more about nutritional problems of preschoolers here: https://brainly.com/question/13993153
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A chemoelectrical signal that can travel along cell membranes in a wave-like pattern is a(n)?
A chemo electrical signal that can travel along cell membranes in a wave-like pattern is called a nerve impulse.
What is a nerve impulse?
A nerve impulse is an action potential generated across the plasma membrane of the neurons of our nervous system.The electrical potential difference generated across the neurilemma i,e., the plasma membrane of the neurons (due to the reception of the external stimulus), is responsible for the generation of the nerve impulse.Neurotransmitters, chemicals like acetylcholine, dopamine, etc., are also involved in transmitting nerve impulses across neurons.Hence, the chemoelectrical signal that can travel along cell membranes in a wave-like pattern is a nerve impulse.
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Crossing over is the only mechanism that creates genetic variation by creating hybrid chromosomes with new combinations of alleles.
a) true
b) false
This is True that Crossing over is the only mechanism that creates genetic variation by creating hybrid chromosomes with new combinations of alleles.
The term "crossing over" describes the DNA exchange that takes place between paired homologous chromosomes (one from each parent) during the formation of egg and sperm cells (meiosis).
To boost genetic variation, chromosomes that are similar to one another cross across. A piece of one chromosome is swapped for another during crossing over. A hybrid chromosome with a distinctive genetic material pattern is the end outcome.
During the development of gametes, crossing over aids in the random distribution of genetic material. As a result, gametes are created that are genetically unique from the parents and siblings of those gametes.
However, by randomly arranging chromosomes through independent assortment and fertilization, genetic variation is produced.
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What should you do if every dilution of your sample results in a plate that is too few to count?
The original sample must be refilled and the most probable number (MPN) approach must be used if each dilution of the sample yields too few plates to count.
What is the most probable number(MPN) method?
The most probable number (MPN), a statistical technique based on the idea of extinction dilution, is used to calculate the number of bacteria that are likely to be present in a sample. It is frequently used to estimate the number of bacteria in food and water. However, the technique can only count living creatures. According to Food and Drug Agency (FDA) guidelines, which state that the maximum allowable limit in seafood is 10,000 cells per gram, it is imperative to count V. parahaemolyticus from seafood.
Why is the MPN technique crucial?
When samples include particulate matter that obstructs plate count enumeration techniques, MPN(most probable number) tests are particularly helpful. In order to determine if the water is safe to drink in terms of the number of bacteria present, MPN is most frequently used to assess the quality of water.
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Which of these animals is a tetrapod that does not produce amniotic eggs?
a. monkey
b. salamander
c. elephant
d. python
e. human
Answer:
A salamander
The examination of blood film should be performed at _____ to detect microfilariae.
Answer:
Night
Explanation:
Usually, a microfilariae blood test is conducted at night to coincide with the appearance of microfilariae.
Briefly explain why only chromosomes of a homologous pair can have their alleles referred toas homozygous or heterozygous
This is due to the fact that only homologous chromosomes would have identical genes located at identical sites on those chromosomes. Otherwise, there would be no connection between the alleles of various genes.
Although the genes and loci of the two members of the homologous pair are similar, the alleles may vary.For instance, both allele possess the genes responsible for the attribute of eye colour. While the one has alleles for the blue-eye trait, other has alleles for the brown-eye trait. The homologous chromosomes are said to be heterozygous in this instance since the alleles are different.
On the other hand, when both alleles for a gene that codes for the blue-eye phenotype are present, it is said to be homozygous.
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explain the national food security of Bhutan based on the concept of photosynthesis?
Food security, as defined by the United Nations' Committee on World Food Security, means that all people, at all times, have physical, social, and economic access to sufficient, safe, and nutritious food that meets their food preferences and dietary needs for an active and healthy life.
Which nutrients provide energy in the form of calories? which nutrients regulate body processes and promote growth, development and maintenance of body tissues?
Answer:
The nutrients in form of calories are fats and oils. The nutrients that regulate body processes and promote growth, development and maintenance of body tissues are Proteins.
Determine if the following statement is true or false, and why. all mutations are harmful and increase the risk of disease such as cancer.
The given statement is False.
All mutations are not harmful but some can increase the risk of diseases such as cancer.
Are all mutations harmful?A mutation is a change in a gene's structure, which is how inheritance works. DNA, a lengthy molecule made up of nucleotide building pieces, is the substance that makes up genes.While most mutations are benign, some can be detrimental. A dangerous mutation may lead to a cancerous condition or possibly a genetic problem. Chromosome mutations are yet another type of mutation.Mutations may be inherited or picked up during the course of a lifetime.Some mutations are advantageous and raise an organism's chances of thriving and passing on its genes to the following generation.Natural selection will gradually increase the frequency of a mutation when it enhances either survival or reproduction. When mutations are dangerous, they gradually disappear from the population.Hence, not all mutations are harmful only a few can be.
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A research group is looking for a way to use spider silk, valued for its high tensile strength, to make extremely strong ropes, but spiders only produce small amounts of silk. they have isolated the gene and have inserted it into cows to produce the silk protein in their milk where the scientists can collect it in large quantities. what is this process called? a. transgenics b. artificial selection c. bioreaction d. recombination
The process is known as transgenics.
What are transgenics?
By artificially introducing one or more foreign DNA sequences from another species, an organism or cell is said to be transgenic if its genome has been transformed. For scientific investigation, transgenic organisms are produced in the lab.
For a very long period, transgenic has been applied to genetic research. They were employed to show that oncogenes are cancer-causing agents and that DNA is the molecule that houses the genetic code. Transgenic animals have been developed to better understand physiological systems including metabolism and blood cell formation. The development of novel medicines has used transgenic animals as models for human diseases. Virus-resistant and faster-growing transgenic crops have been developed.
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Differentiation is a fundamental process in the development of multicellular organisms. Looking at the lecture notes online for this class, what is the specific model system that we will use as an example of differentiation?.
What is differentiation in multicellular organisms?
A multicellular organism undergoes numerous rounds of differentiation as it develops from a straightforward zygote to a complex system of tissues and cell types.
What is an example of cell differentiation?
The transformation of a single-celled zygote into a multicellular embryo and then into the complex multisystem of several cell types that is a fetus is an illustration of cell differentiation.
What is the process of differentiation?
Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions. Stem Cells. A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.Learn more about differentiation
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Evaluate your work by answering these questions: how did this activity help you understand the roles and priorities of the federal government during obama's administration? what would you like to know more about?
Obama's signature domestic legislative achievement was the Patient Protection and Affordable Care Act, known colloquially as "Obamacare."
What is obama's administration ?The general goals of the Obama Administration were to "revive the economy, provide affordable and accessible health care to all, strengthen our public education and social security systems, define a clear path to energy independence and tackle climate change, end the War in Iraq responsibly," among other things.
No matter who you are, where you are from, what you look like, or whom you love, President Obama has led the battle to safeguard everyone.Here is how the administration has performed in terms of advancing broad rights and protections for LGBT Americans, improving the fairness and security of our immigration system, combating poverty, and investing in communities.Learn more about Obama's administration here:
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Answer:
Answer on Edmentum
Explanation:
The urinary system consists of two __________, two __________, one __________, and one __________
"The urinary system consists of two kidneys, two ureters, one urinary bladder, and one urethra."
Blood is filtered by the urinary system, which produces urine as a waste product. The ureters, bladder, kidneys, renal pelvis, and urethra are among the urinary system's organs.
The ribs and muscles of the back protect the kidneys, a bean-shaped organs that are situated on either side of the spine. The ureter, a pair of thin muscular tubes, emerges from each kidney's renal pelvis. From the kidney to the bladder, it transports urine.
Urine is kept in this muscular sac-like structure. Micturition, or the act of urinating, is the process by which the urinary bladder is emptied. Urethra, which emerges from the urinary bladder, aids in the removal of urine from the body. Muscles called sphincter guard its opening.
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The clear front surface of the eye that allows light in, which is also a major focusing element of the eye is known as the_______.
The clear front surface of the eye that allows light in, which is also a major focusing element of the eye is known as the Cornea.
What is cornea?When the cornea is touched, an automatic response to close the eyelid occurs because the cornea has unmyelinated nerve endings that are sensitive to touch, temperature, and chemicals. The healthy cornea has no need for or necessity of blood vessels since transparency is of utmost importance. Instead, oxygen diffuses throughout the cornea after dissolving in tears, preserving its health. Similar to how nutrients are carried, aqueous humour and tear fluid both use diffusion to move nutrients from one surface to the other. Additionally, neurotrophies sent by the corneal nerves serve as a source of nutrients. The cornea of an adult human measures 11.5 mm in diameter, with a thickness of 0.5-0.6 mm in the center and 0.6-0.8 mm at the edges. Avascularity, transparency, and the presence of young residents
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What are the major sources of energy utilized during a 100 meter race, a 1000 meter race, and a marathon? How do runners transition from one energy source to another during the course of a marathon?
Glucose is the major sources of energy which utilized during the 100 m race , 1000 m race . Glucose is formed from the breakdown of carbohydrate and stored as a glycogen in muscles and liver.
Carbohydrates and fat are the primary sources of energy with protein contributing a minimal amount under normal conditions.ATP is body's usable from of energy. Body uses three type of different system of metabolism to transfer stored energy to form ATP.
Runner wants to sustain high intensity energy for marathon , must obtain sufficient glycogen stores. High carbohydrate foods are good for runner so that they quickly get energy.
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Many major publishers generate additional revenue through custom publishing divisions, producing limited-distribution publications, sometimes called?
Many major publishing agencies generate additional revenue through custom publishing divisions, producing limited-distribution publications, sometimes called magalog .
A magalog is a informational copy of a magazine, usually in a 12-page index format. The name is a portmanteau of "magazine" and "catalog" and was coined by Gary Bencivenga. Magalogs help announce magazines to new readers. It can also help current readers see new or upcoming changes, additions, or improvements to the magazine. An alternate use can include catalogs that are presented with content, not just advertising.
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The poisonous chemical carbon monoxide inhibits the electron transport chain of cellular respiration. as a result:____.
Carbon monoxide inhibits mitochondrial respiration by binding the ferrous heme a3 in the active site of COX, effectively shutting down oxidative phosphorylation .
Aerobic respiration is a process that utilizes the electron transport chain in order to oxidize glucose into energy. If a chemical were added that inhibited the electron transport chain, the cell would no longer be able to fully oxidize glucose. Carbon monoxide specifically inhibits cytochrome c oxidase of human mitochondrial respiratory chain.CO inactivates cytochrome oxidase. This leads to decreased ATP production, especially in tissues with high metabolic demands (brain, heart). The electron transport chain continues, generating superoxide radicals, leading to further damage.
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The _______ of a freshwater ecosystem _______ as you move further away from a point-source sewage spill.
The BOD (Biological Oxygen Demand) of a freshwater ecosystem decreases as you move further away from a point-source sewage spill.
Pollution originating from a single, identifiable source, such as a discharge pipe from a factory or sewage plant, is called point-source pollution. The term "biological oxygen demand" refers to the quantity of oxygen needed to allow aerobic bacteria to decompose waste organic matter in water.
The need for oxygen decreases as you travel away from the sewage spill and then increases. The need for oxygen decreases as there is more raw sewage present. Fish cannot survive in water with dissolved oxygen levels below 4 gm/liter, and the level will continue to drop.
Therefore, the BOD (Biological Oxygen Demand) of a freshwater ecosystem decreases as you move further away from a point-source sewage spill.
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you are leading an effort to reduce the formation of a dead zone in the gulf of mexico during the summer. You are tasked with selecting which company should be hired to help treat water runoff in the area. you provide both companies with identical samples of the water to be treated. the table below shows the results. to which company do you award the contract and why
A) I would chose company 1 because they decreased metals the least, and metal kill microbes
B) I would choose company 1 because they reduced nitrate and phosphate fertilizers the most and these fertilizers contribute to the dead zone formation
C) I would chose company 2 because they decreased the nitrate and phosphate fertilizer the least and these are important for plant growth and algae growth
D) I would choose company 2 because they reduced metals the most and metals are the most harmful contamination of the listed
Answer:
B) I would choose company 1 because they reduce nitrate and phosphate fertilizers the most.
Explanation:
Dead zones begin to form when excess nutrients such as phosphorus and nitrogen enter coastal waters and help the growth of an organism called cyanobacteria, or blue-green algae. With too much nutrients the algae takes up most of the oxygen in the water, leaving other organisms with less oxygen, killing them. Fertilizers would be the main reason for a dead zone to form. Therefore, Company 1 would be the most suitable as they reduced the concentration of fertilizers in the water the most.
What is the secondary means by which air enters the body when breathing is labored or heavy?
Oral cavity is the secondary means by which air enters the body when breathing is labored or heavyby which air enters the body when breathing is labored or heavy.
What is Breathing?
Gas exchange is a procedure that is vital to life. There are two separate phases to the process of breathing. Inhalation is the first phase, also known as inspiration, while expiration is the second phase, also known as exhalation.Air enters your lungs when you inhale (breathe), and the oxygen in that air travels to your blood and at the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out).The physical characteristics of the lung have an impact on both the intrapleural and alveolar pressures. However, both the atmospheric and intrapulmonary air pressures are necessary for breathing.Learn more about the Process of breathing with the help of the given link:
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Water has the unique ability to stick to the sides
of containers. This same characteristic allows it to
move up the roots and stems of plants, against
the flow of gravity.
What do we call this characteristic of water?
A. acidity
B. high specific heat
C. capillary action
D. transparency
Answer:c
Explanation:
We call this characteristic of water as a capillary action. The correct answer is C.
Thus, It is known as capillary action when a liquid seems to defy gravity and rise inside of a solid. The three characteristics of liquids known as cohesion, adhesion, and surface tension are what allow a liquid to flow upward.
The functioning of capillary action as a whole is based on these three characteristics, which are defined as follows.
A liquid's capacity to molecularly adhere to itself is known as cohesion. The ability of the liquid to molecularly adhere to other objects is known as adhesion. For capillary action to function most efficiently, a liquid's adhesive forces must be greater than its cohesive forces.
Thus, We call this characteristic of water as a capillary action. The correct answer is C.
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The differences in traits among all of your monsters are due to differences in the dna code. What is the source of these differences?
Mutation is the source of differences in the dna code.
What is Mutation?
A mutation is a permanent change in the DNA sequence of an organism.Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations. Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.Damaged DNA can change by base pair replacement, deletion, or insertion. The majority of the time, mutations are benign, unless they result in tumor growth or cell death. Cells have developed systems for repairing damaged DNA due to the deadly potential of DNA mutations.Learn more about the DNA Mutation with the help of the given link:
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The stimuli causing endocrine glands to secrete their hormones in direct response to changing blood levels of certain critical ions and nutrients are called __________
The stimuli causing endocrine glands to secrete their hormones in direct response to changing blood levels of certain critical ions and nutrients are called Humoral stimuli.
Humoral stimuli refer to the control of hormone release in response to changes in extracellular fluids such as blood or the ion concentration in the blood. For example, a rise in blood glucose levels triggers the pancreatic release of insulin.
The term humoral is derived from the term humor, which refers to bodily fluids such as blood. Insulin causes blood glucose levels to drop, which signals the pancreas to stop producing insulin in a negative feedback loop.
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In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant allele (Y) represents yellow and the recessive allele (y) represents green.
Based on the Punnett square, what percentage of offspring would be expected to have yellow seeds?
Based on the punnett square, 100% of offspring would be expected to have yellow seeds (YY or Yy).
What is a punnet square?A punnet square is a graphical representation used to determine the probability of an offspring expressing a particular genotype.
According to this question, in pea plants, the gene for the color of the seed has two alleles. However;
the dominant allele (Y) represents yellow the recessive allele (y) represents green.In the punnet square shown above, a pea plant with genotype YY is crossed with another pea plant with genotype Yy.
The following offsprings will be produced:
YYYYYyYyAll the above offsprings have a dominant phenotype, hence, 100% of offspring would be expected to have yellow seeds (YY or Yy).
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A 7 Tesla scanner, or 7T scanner is preferable to a 3T scanner in what scenarios?
Choices:
When we need a BOLD signal
When higher voxel resolution is required
When higher pixel resolution is required
To get Elon Musk's attention
C. The scenario described when a 7 Tesla scanner, or 7T scanner is used instead of 3T scanner is, "when higher pixel resolution is required"
What is pixel resolution?Pixels per inch and pixels per centimeter are measurements of the pixel density of an electronic image device, such as a computer monitor or television display, or image digitizing device such as a camera or image scanner.
A 7 Tesla scanner, or 7T scanner is preferable to a 3T scanner because the 7 Tesla scanner gives higher pixel resolution when compared to 3 Tesla scanner.
Thus, the scenario described when a 7 Tesla scanner, or 7T scanner is used instead of 3T scanner is, "when higher pixel resolution is required".
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Assuming dragon genetics follows the same rules as fruit flies, what ratio of genotypes would you expect if the genes were not linked? (remember you are crossing ffbb x ffbb)
Assuming dragon genetics follow the same rules as fruit flies, we would get the same possible genotype for all 16 offspring provided that the genes are not linked.
Considering dragon genetics, flame eyes (F) are dominant to blue eyes (f) and burbling (B) is dominant to whistling (b).
Now, a dihybrid cross between two homozygous blue-eyed, whistling dragons will yield 16 offspring all with the same possible genotype .i.e. homozygous blue-eyed, whistling type.
Morgan through experiments on fruit flies observed that when the two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combination were much higher than the non-parental type.
He attributed this due to the physical association or linkage of the two genes and coined the term 'linkage' to describe the physical association of genes on a chromosome. The term 'recombination' is to describe the generation of non-parental gene combination.
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Please help ASAP!! Very confused
The three diagrams or images are pictures of female reproductive plant parts.
What is the first image?
The first diagram is an Ase.xual Spore. An ase.xual spore is Asexual spores can be shed outdoors or within a specific reproductive sac called a sporangium and are genetically identical to their parents.
Inhospitable environmental circumstances frequently lead to se.xual reproduction in fungus. When reproducing sexually, mycelium can either be homothallic or heterothallic.
What is the second image?The second diagram or Item B of the plant is called the Ovule.
What is the Ovule of a plant?Ovules are held or contained in the carpal, the bottom portion of the pistil (eggs). the region of the flower that develops into a fruit after fertilization of the ovarian ovules, or eggs.
In order words, the Ovule is the part of a flowering plant that produces female reproductive cells.
What is the Third Image?The third image is a juxtaposition of subfamilies
Campanuloideae and Lobelioideae.To the left is a cross section of a common ovary in the subfamily of the plant genus called Lobelioideae. It depict 2 locules and numerous axile ovules.
On the right is a common ovary of the Campanuloideae with locules that are five in number and numerous axile ovules. There is also traces of milky sap on the cut surface.
What is a locule?A locule is any of several tiny, distinct chambers, particularly in an ovary.
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Blue jays and crows eat caterpillars and mice. if the number of blue jays increases, what are the two likely effects on other populations?
If the number of blue jays increases, the two likely effects on other populations are both the number of mice and the number of caterpillars will decrease.
What are two likely effects on other populations due to the increment in Blue jays population?An organism that preys on other species in order to consume them as food is referred to as a predator. Prey is a term used to describe an organism that a predator kills. An ecosystem's ability to balance an expanding prey population depends on the interaction between predators and their prey.Blue jays and crows both rely on mice and caterpillars as food sources, as indicated by the current circumstance. Mice, caterpillars, and blue jays are the prey, while crows and crows are the predators. The two prey populations will decline if the number of blue jays rises.Hence, both the number of mice and the number of caterpillars will likely drop as the number of blue jays rises, having two possible implications on other populations.
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what are the functions of an amoeba
Answer:
Apart from their roles in human disease, amoebas are also an important part of the soil ecosystem.
An amoeba functions as a part of the food web as a consumer and scavenger. This organism feeds on dead matter as well as other small organisms such as algae and protozoans. The amoeba in turn provides food for water fleas and mussels.
The ________, in the chloroplast, contains photosynthetic pigments in its membrane.
The thylakoid membrane, in the chloroplast, contains photosynthetic pigments in its membrane.
What is photosynthesis?Plants and other living things employ a process called photosynthesis to transform light energy into chemical energy that can then be released through cellular respiration to power the organism's activities. The name photosynthesis comes from the Greek words pho, "light," and synthesis, "putting together," and refers to the process through which carbon dioxide and water are converted into molecules of carbohydrates, such as sugars and starches. Photoautotrophs are creatures that perform photosynthesis, including most plants, algae, and cyanobacteria. The majority of the energy required for life on Earth is produced and maintained by photosynthesis, which is also substantially responsible for producing and maintaining the oxygen content of the atmosphere.
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