The central canal known as the osteonic (haversian) canal is surrounded by concentric rings (lamellae) of matrix that make up the osteon.
A single layer of columnar ependymal cells lines the central canal, also known as the spinal foramen or ependymal canal, which runs from the conus medullaris in the lumbar spine to the caudal angle of the fourth ventricle. It depicts a piece of the original neural tube's lumen.
Along the spinal cord's length, there is a hollow tube called the Central Canal. The cerebral spinal fluid, a colourless fluid that surrounds the whole central nervous system as well as different channels and chambers inside the central nervous system, is what fills this route.
Concentric circles are those that share a common centre but have differing radii. It is described as two or more circles with the same centre, in other words. The area between two concentric circles with different radii is known as an annulus.
Complete question:
what is concentric rings around the central canal?
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What are the riskiest times for a pregnant woman to be exposed to a teratogen and why?
Teratogens is dangerous. Because of fetus's numerous developing organs and systems, which increase it's sensitivity to teratogens' detrimental effects.
What are the Types of teratogens?Drugs: Both prescription and over-the-counter (OTC) drugs are frequently taken by pregnant women. Although not all drugs carry the same risks, it's crucial to be aware of those that are recognised teratogens.Infectons: Not every illness has the same effects on a developing foetus and pregnancy. The common cold and other milder diseases sometimes strike pregnant women without warning. However, some diseases have a greater chance of having an effect on a pregnancy.Physical agents : Fetuses may also be at risk from exposure to some necessary medical procedures, job dangers, or heat. Heat and radiation exposure are both regarded as physical teratogens.Environmental Toxins : A developing foetus may be at risk from toxic metals and chemicals. Environmental toxins include things like Mercury, Lead, Polychlorinated and Polybrominated Biphenyls, to name a few (PCBs).Maternal Health Conditions: Teratogenic hazards might arise from specific maternal health issues. Chronic medical disorders such uncontrolled diabetes, autoimmune illness, and maternal phenylketonuria can have an effect on a developing foetus (PKU).To learn more about Teratogen refer to:
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What is the most important procedure for preventing the spread of biological contamination?
Answer:
hand hygiene
Explanation:
washing surfaces with disinfectant kills bacteria and fungi
washing with soap removes substances which traps pathogens as well as pathogens themselves from the skin.
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What are these panels used for?
A. To produce a fission reaction
• B.
To convert electricity into less usable energy
• C. To create electricity from solar energy
•
D. To transform energy from moving water
Answer: C. To create electricity from solar energy
Explanation:
How many bacteria are present in the population after 4 hours?
According to the law of exponential growth, bacteria expand in number within a culture. After two hours, there are 125 germs in the culture, and four hours later, there are 350.
How many bacteria are still in the community five hours later?78,686 bacteria After 5 hours, there are 80,686 microorganisms present. 100,000=200e0.02t500=e0.02tln500=0.02tt=ln5000.02≈310.73.
How many bacteria are still present 24 hours later?Every thirty minutes, the bacterium doubles. Two halves of an hour make up one. Thus, a 24-hour period has 48 half-hours. Thus, 248 microorganisms remain in the community after 24 hours. Thus, in 20 minutes, a single bacterium can grow to two. 4 minutes later, and so forth.
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What are the 8 classification of organisms?
Eight levels of taxa make up the generally used classification scheme, which is based on the Linnean system. They are, from most general to most particular, domain, kingdom, phylum (plural, phyla), class, order, family, genus (plural, genera), and species.
Are there seven or eight classification levels?Kingdom, Phylum, Class, Order, Family, Genus, and Species are the top seven categories.
What are the eight classification levels, from largest to smallest, in numerical order?They are kingdom, phylum, class, order, family, genus, and species, in order of largest to smallest. 2. Each level is referred to in taxonomic nomenclature as a taxon (plural: taxa) or taxonomic category.
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the process that form food in the prescene of oxygen is
Answer: cellular respiration
Explanation:
It takes in oxygen and converts it into food :) totally!
Check all the attributes that apply to microbial taxonomy: Check AII That Apply Can use characteristics such as morphology; pigmentation, presencelabsence of specific genes; evolutionary relatedness Brings order to wide diversity of microbial life forms Only used for microbes of pathogenic or industrial significance Includes the naming of taxonomic groups in agreement with published rules
The following are the correct answers to the given question:
can make use of morphology, pigmentation, the presence or absence of a certain gene, or an evolutionary relationship
Provides order to a diverse range of microbial life forms.
entails identifying taxonomic categories in accordance with stated guidelines
Taxonomy:-
Classification, nomenclature, and identification are all terms used to describe the science of classifying living things.
Based on mutual similarity, organisms are classified into taxa (s., taxon).
A new species cannot be recognized until it is published in the International Journal of Systematic and Evolutionary Microbiology.
In taxonomy, each organism has two names.
E. coli is an example (E.coli). Escherichia is a genus name and coli is a species name.
So, we can say that the correct options are :
can rely on morphology, coloration, the presence or lack of a certain gene, or an evolutionary relationship
Orders a wide variety of microbiological life types.
involves classifying taxonomic groups in accordance with established rules
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What do all snails have in common?
The common feature of all snails is a spiral-shaped shell that serves as protection from harm in any hazardous situation.
The common shell of a snail is a spiral that wraps around a spindle. When there is danger, snails retract their soft bodies within this shell. They are asymmetrical as a result, and this asymmetry is reflected throughout their bodies. The snail shell is consistently built in the same manner. They eat plants like mushrooms, berries, and lettuce as well as fresh leaves, stems, and bark. The external shell is formed from the secretion of the mantle.
Hence, the morphology of all snails remains the same.
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Select four goals that human service professionals try to provide for their clients _____.
The four goals that human service professionals try to provide for their clients are establish safety, provide stability, locate resources and refer to drug rehab.
Drug rehab is is care that can help you get back, keep, or ameliorate capacities that you need for diurnal life. These capacities may be physical, internal, and/ or cognitive( thinking and literacy). You may have lost them because of a complaint or injury, or as a side effect from a medical treatment.
Human service professionals estimate a customer's requirements, produce a treatment plan, and put the plan into action. Throughout the process, they give guests with emotional support. Working nearly with the customer, cre- ate a plan for services with safety to help the client to break these problems.
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What is an allegory and how is Animal Farm an allegory?
Allegory is the use of symbolic literary characters and their actions to convey truths or generalisations about human existence. It includes literary genres like fable and parable. A metaphor is, in general, figurative language. More specifically, it is a figure of speech in which a word or phrase that literally refers to one kind of thing or idea is substituted for another to imply similarity or analogy between the two. An example of an allegory is Aesop's Fables, while a metaphor is "the ship ploughs the seas."
An allegory is a type of story, poem, or picture that can be interpreted to reveal a hidden meaning, typically a moral or political one. An allegory often uses symbolism to portray the underlying meaning.
Animal Farm is an allegory that uses the story of a group of farm animals who rebel against their human farmer to tell a broader story about the Russian Revolution and the rise of Stalin's dictatorship. The characters in the novel, such as the pigs, the horses, and the dogs, represent different groups in Russian society and the events of the novel correspond to historical events. For example, the pig Napoleon represents Stalin, and the windmill that the animals build represents the Soviet Union's industrialization. The allegory in Animal Farm serves to criticize the Soviet Union and the way that power can corrupt those who hold it.
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All of the following are true of the lacrimal glands, except that they
a. produce most of the volume of tears.
b. are located in recesses in the frontal bones
c. produce mucus
d. produce lysozyme
e. produce watery secretions.
The lacrimal glands do all of the following, with the exception that they do not create lysozyme. The correct response is (d).
The aqueous layer of the tear film is produced by two pairs of exocrine glands known as lacrimal glands in the majority of terrestrial vertebrates and certain marine mammals. In humans, they are located in the lacrimal fossa of the orbit produced by the frontal bone, in the top lateral portion of each orbit. The medical word for inflammation of the lacrimal glands is dacryoadenitis. The lacrimal gland and lacrimal ducts work together to secrete tears. These canals connect to the lacrimal sac after these ducts transfer tears from the eye's surface. The tears from that sac are sent into the nose through the lacrimal duct. The gland is split into two sections by anatomists: the palpebral lobe and the orbital lobe. The palpebral section can be visible if the upper eyelid is everted. The smaller palpebral lobe is located along the inner surface of the eyelid, near to the eye. Fine interlobular ducts that connect the orbital and palpebral lobes of the gland are seen in the orbital lobe. Before the secreted fluid can reach the eye's surface, they combine to create three to five primary secretory ducts, joining five to seven ducts in the palpebral region.
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brca1 activity is regulated by phosphorylation by different kinases. in normal cells, a kinase called atm is activated in response to dna damage. would phosphorylation of brca1 by atm activate or inhibit brca1 function?
Additionally, there is proof that BRCA1 participates in the S-phase checkpoint activated by halted replication forks, which can be brought on by UV or hydroxyurea treatment of cells (HU).
What causes mutations in the BRCA1 gene?To fix DNA breaks, the BRCA1 protein interacts with a variety of other proteins in the nuclei of several types of normal cells. These breaks can be brought on by chromosomes exchanging genetic material prior to cell division, natural radiation, medicinal radiation, or other environmental exposures.
What does the gene for ATM do?The ATM gene gives instructions for creating a protein that is largely found in the nucleus of cells, where it aids in regulating how quickly cells divide and expand.
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The Everglades are wetlands in southern Florida. In 1948, federal and local governments joined
together to divert water from the Everglades in order to create dry land for humans to live on. The
change in water flow affected the ecosystem negatively. In 2000, the Comprehensive Everglades
Restoration Plan was initiated. The goal of this legislation is to return the water flow to its historical
path. Which of the following was necessary for the Comprehensive Everglades Restoration Plan to
be enacted?
a. They had to ask the public for monetary donations for the funding of the project.
b. They had to survey the public for their opinions.
c. They had to monitor the health of the system for years and collect data.
d. They had to collect samples of all native plants.
The Everglades are wetlands in southern Florida. the ecosystem negatively affected by the change in water flow. The following was necessary for the Comprehensive Everglades Restoration Plan to be enacted is that they had to survey the public for their opinions.
The Ecosystem is the composition of all biotic and abiotic components and place where they interact with each other.
The basic types of ecosystem are as follows :
Forest Ecosystem.Grassland Ecosystem.Tundra Ecosystem.Desert Ecosystem.Everglades:Everglades are the tropical wetland found in southlands of USA i.e. in state of Florida. Everglades consists of the following major trees in its arms.
Bromeliads and Grasses.Cacti and Succulents.Lichens.Marine Plants / Algae.Orchids.WildflowersTo know more about Ecosystem visit
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Which process is unique to mitosis?
In mitosis, homologous chromosomes behave independently and this is unique to mitosis.
Mitosis is a type of cell division in which one cell divides into two genetically identical cells. Related to the cell cycle, mitosis is the process by which DNA in the nucleus of a cell is divided into two equal sets of chromosomes. Mitosis produces genetically identical cells with the same number of chromosomes. Mitosis is therefore also known as the division of the equation.
Cell division is necessary for the body to grow and for body tissues such as the skin to regenerate regularly. As cells divide, the outer membrane is pushed inward, separating the newly formed cells. The main result of mitosis and cytokinesis is the transfer of the genome from the parent cell to her two daughter cells. The genome consists of a series of chromosomes. It is a densely coiled complex of DNA that contains the genetic information essential for proper cell function.
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How are genes and DNA related quizlet?
Genes and DNA are related because genes are made up of DNA.
What are Genes?
Genes are segments of DNA that contain instructions for the development and functioning of living organisms. They are found in all organisms and are responsible for the transfer of inherited characteristics from one generation to the next. Genes are responsible for the physical characteristics of a living organism, such as eye color, hair color, and other features. They also determine a person's susceptibility to certain diseases and their response to environmental factors.
Genes are contained within each strand of DNA and are responsible for the transmission of hereditary characteristics from parent to offspring.
What is DNA?
DNA (deoxyribonucleic acid) is a molecule found in the nucleus of cells that contains genetic information. It is a double-stranded molecule made up of nucleotides that forms a spiral ladder-like structure. DNA carries the instructions needed for an organism to grow, develop, and reproduce.
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Classify each phrase based on the macronutrient it describes. Carbohydrates Proteins Lipids Water contains nitrogen cticial source of energy for the brain and red blood cells provides 9 kcal/g fills and surrounds every cell in the body dietary fiber deposits in body provide insulation and tection provides 0 kcal/g starch and sugar comprised of chains of amino acids olive oil Answer Bank
The macronutrients are:
Proteins: comprised of chains of amino acids - Proteins provide 4 kcal/g and are important for growth, repair, and maintenance of the body's tissues.Lipids: olive oil - Lipids provide 9 kcal/g and are an important source of energy for the body. They also provide insulation and protection for cells.Water: contains nitrogen - Water does not provide any calories and is an essential component of life. It contains nitrogen, which is important for the transport of oxygen in the body.The Importance of Macronutrients in Maintaining a Healthy LifestyleEvery day, we are bombarded with information about the importance of eating a balanced diet and maintaining a healthy lifestyle. But what exactly does this mean? A balanced diet consists of a variety of foods from all the major food groups, including carbohydrates, proteins, lipids, and water. Each of these macronutrients plays an important role in the body and is essential for good health.
Carbohydrates are an important source of energy for the body and provide approximately 4 kcal/g. They can be found in food sources such as starch, sugar, and dietary fiber. Carbohydrates are the preferred source of energy for the brain and red blood cells and are needed for proper functioning of the body.
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Why multiple sclerosis is so called?
The diagram snows the parts or a nower.
Stigma.
Style.
Ovary.
Ovule
Anther
Filament
What is the name of the part labeled 2 in the diagram?
A. Stamen
B. Uterus
C. Carpel
D. Petal
2
The part of the plant that is shown in image 2 is the petal. Option D
What is a flower?We know that a flower is the reproductive part of the plant. This is the part of the plant that contains the anther and the stigma of the plant. As such, looking at the plant, we can see that the part of the plant that can be take part in the process of pollination is the flower of the plant.
Given the image of the plant as we can see it, it is clear that the labelled part of the plant that we can see in the image that has been labelled 2 is the petal.
Hence, the flower could be said to be the reproductive part of the plant.
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What impact did the structure of the legal system in the us have on modern procedures? choose all that apply.
Answer: O. The Bill of Rights guarantees each person civil liberties to this day.
O. It directly impacts all laws, legal proceedings, and kinds of punishment and sanctions today.
Explanation:
The above given statements are the impact which the structure of the legal system in US have on modern procedures. The ability to guarantee each individual civil liberties irrespective of tribe or religion is one of the fundamentals of the legal system in US. Also, its ability to issue out sanctions and punishment without fear or favour is another impact associated with it.
What are the ethical issues of genetic modification?
Use of animals for research, farmers are at loss and biopiracy are the ethical issues of genetic modification.
Genetic modification is a technique that involves transferring a piece of DNA from one organism to another in order to change the characteristics of a plant, animal, or microorganism. This is accomplished by removing the desired genes from one organism's DNA and inserting them into the DNA of the other.
Many GMO crops are used to produce ingredients consumed by Americans, such as cornflour, corn syrup, corn oil, soybean oil, canola oil, and granulated sugar. GMO potatoes, summer squash, apples, papayas, and pink pineapples are among the fresh fruits and vegetables available.
Genetically modified (GM) crops are those that have been engineered to introduce a new trait into the species. Resistance to specific pests, diseases, or environmental conditions, as well as resistance to chemical treatments, are common goals of GM crops (e.g. resistance to a herbicide).
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What is the slope 6x 2y 12?
We must transpose terms to obtain the value of y in order to convert the linear equation 6x2y=12 to slope intercept form. Consequently, the equation is y=3x6 in slope intercept form.
Where can I find the slope formula?When the slope of the line being studied is known, and the provided point is also the y intercept, the slope intercept formula, y = mx + b, is utilized (0, b).
The slope formula's Y value is what?The equation of a straight line is expressed in slope-intercept form as y = mx + b. In the equation y = mx + b, m stands for the line's slope and b for its intercept. The letters x and y, respectively, stand for the line's separation from the x- and y-axes.
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What does the plant start with and end with?
The plant will start from the seed germination and will end with the end of the life cycle which is known as the death of the plant.
Plants start as seeds buried in the ground. When the seed is watered and the sun warms it, the hard shell opens and roots begin to grow. As the plant grows, its stems break through the ground. Leaves then begin to grow from the stem. The main stages of the plant life cycle are seed germination, seedling formation, growth to mature plants, development and differentiation, pollination and fertilization, and fruit and seed formation. The plant will reach the end of its life cycle and dies.
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Why DNA is best genetic material?
Explanation:
DNA is less reactive chemically and more stable structurally in comparison to RNA. Hence, DNA is a better genetic material.
What type of reproduction do snails use?
The majority of snail species are concurrent hermaphrodites. This indicates that both the male and female reproductive systems are present in each snail.
Both male and female reproductive cells are present (they are hermaphrodite). Self-fertilization is a possibility, so they don't actually need to mate with another snail in order to reproduce. In a soggy, underground nest, they lay about 80 white eggs after mating. After mating, female snails lay jelly-like eggs either on plant stems, behind rocks, or in moist soil for freshwater snails or at the top of the water's surface for saltwater snails (land snail). Usually, the eggs hatch in two to four weeks.
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What are the two types of
fermentation?
A. alcoholic fermentation and lactic acid fermentation
B. ethanol fermentation and glycolic fermentation
C. acetic acid fermentation and glycolic fermentation
D. acetic acid fermentation and lactic acid fermentation
Answer:
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3. Is celery a monocot or a dicot? Explain how you know. Refer to Figures 11.5 and 11.6 in your book. Compare the location of the vascular bundles in the celery (See the photograph above) to the two figures. Total Magnification: epidermis phloem xylem vascular bundle parenchyma cell Figure 11.5: Corn (Zea mays) stem, cross section view at 40X. Corn is a monocot. Plant Diversity, Angiosperm Structures & Angiosperm Reproduction | Laboratory 11 Total Magnification: epidermis cortex phloem cambium _ vascular bundle xylem pith bluedoor, LLC Figure 11.6: Sunflower (Helianthus), cross section at 40X. Sunflowers are dicots. te: Keep the microscope at your lab table. Return your prepared slides to the box. 221 Laboratory 11 | Plant Diversity, Angiosperm Structures & Angiosperm Reproduction
The celery is dicot in nature.
What are the characteristics of dicots plants?The dicotyledons, also known as dicots, are one of the two groups into which all the flowering plants were formerly divided. There are around 200,000 species within this group.
Most common garden plants, shrubs and trees, and broad-leafed flowering plants such as magnolias, roses, geraniums, and hollyhocks are dicots.
Dicots get their names from having two cotyledons instead of one. Dicot flower parts come in multiples of 4 or 5. Count the petals and identify whether they are multiples of 4 or 5. Dicot leafs have veins that are scatter or “netted.
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In a certain population, D is a dominant, wild-type allele of a gene encoding a protein important for cell division, and d is a recessive, loss- of-function allele of that gene. The allele frequencies for this gene in this popoulation are D = .7, d = .3 If mutation is the only force acting on this population from generation to generation, what do you predict will happen to allele frequencies over successive generations?
The frequency of the d allele will increase over successive generations.
The number of times the allele of interest is observed in a population is divided by the total number of copies of all the alleles at that particular genetic locus in the population to calculate the allele frequency. The frequency of alleles can be expressed as a decimal, a percentage, or a fraction.
The relative genotype frequencies depict the genetic variation distribution in a population. The percentage of all copies of a specific gene in a population that carry a specific allele is known as relative allele frequency. The mechanisms that cause changes in allele frequencies over time are natural selection, genetic drift, and gene flow. When one or more of these forces act in a population, the Hardy-Weinberg assumptions are violated, and evolution occurs.
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____ is how often the disease occurs
Epidemiology is the investigation of the frequency and causes of disease occurrence in various populations.
In other words, the incident rate is the proportion of total cases to total exposure of the population to illness. Three frequency measurements are used to describe the frequency of illnesses in a population: incidence, prevalence, and death rates. As we have seen since 2020, pandemics are likely to inflict significant disruption, disease, and poverty. A disease is said to be endemic when it spreads within a population at a typical or anticipated rate. After a disease is becoming more stable and controllable, a pandemic starts to transition into an endemic. A sick organism frequently displays symptoms or indicators that point to its aberrant condition.
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How do cells and viruses differ in structure?
Double-stranded DNA and several single-stranded RNA copies make up the structure of cells. However, viruses can also contain single, double, or single-stranded RNA in addition to double-stranded or single-stranded DNA.
What distinguishes viruses from cellular organisms?Viruses are wholly parasitic since they lack ribosomes, mitochondria, or any other cell-like organelles. They are genetic parasites because they are unable to multiply without the metabolic activities of the host cell.
What features distinguish the architecture of various viruses?The kind and size of the nucleic acid, the size and form of the capsid, and whether or not the nucleocapsid is encased in a lipid envelope are the three structural factors that are used to further categorize viruses into families and genera (the capsid enclosed nucleic acid).
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if the brain experiences inflammation, what effect would this potentially have on the blood-brain barrier?
The purpose of the blood–brain barrier is to protect against circulating toxins or pathogens that could cause brain infections.