Dural sinues: This forms at the base of the three folds
Subdural space : This contains the serous fluid.
Subarachnoid space: This contains blood vessels and cerebrospinal fluid.
What is Subarachnoid space?The Subarachnoid space is defined as the space that separates the brain from the skull. It is known to be fluid filled with the cerebrospinal fluid. This helps to provide cushion effects in case of injury or trauma to the head.
Dural sinues: These sinuses are located at the dura mater between the endosteal and meningeal layers of the dura mater. They contain venous blood that originates for the most part from the brain or cranial cavity.
Subdural space : This is a potential space that can be visible when the arachnoid mater is separated from the dura mater. It is filled with serious fluid that aids in lubrication.
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Groups of cells working together form:
describe another situation in which the cell cycle short to allow rapid cell division before returning to normal
Overexpression of growth factors or the absence of suppressor proteins can lead to rapid cell division.
How the cell cycle allows cell division before returning to normal?The study of the cell cycle focuses on the apparatus that regulates the timing and frequency of DNA duplication and cell division during the mitotic (M) phase, the cell divides its duplicate DNA and cytoplasm to make two new cells. M phase involves two distinct division-linked processes such as mitosis and cytokinesis. A cell cycle is a series of events that takes place in a cell as it fattens and divides. A cell spends most of its time in what is called interphase, and through this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and concluded its division.
So we can conclude that the division cycle of most cells comprises four processes such as cell growth and DNA replication.
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Explain how the prairie is different now from how it was in the past.
Answer:
something
Explanation:
Why we can't live without sun?
Answer:
If the Sun disappeared or the Earth were flung out of its orbit the travel alone through interstellar space, then I think a small population of humans could survive (although we might need some advance warning).
While the surface of the Earth would freeze and become uninhabitable pretty quickly, there is enough internal heat in the core (left over from the formation of the Earth and generated by radioactive decay) that it would remain warm underground for billions of years. A small population (a few hundred people, maybe) could live in a suitably modified deep mine. With either nuclear power or geothermal power, they could power life support systems and grow food hydroponically. There are enough suitable deep mines for several of those survivor colonies.
Explanation:
You are working at a night clinic as a nurse practitioner and are assessing a 35-year- old male who is complaining of mild-grade fever and a persistent, productive cough that at times appears to have blood. He states he has lost weight in the past 6 months and often wakes up drenched in sweat. He has treated his symptoms with over-the-counter medications but feels that his symptoms are worsening. He had recently traveled to India on business.
Based on the given symptoms by the patient who is a 35-year- old male who is complaining of mild-grade fever and a persistent, productive cough that at times appears to have blood, he is most likely suffering from rheumatoid arthritis
What is Rheumatoid Arthritis?This refers to the medical condition that a person can have which can cause them to have pain, swelling, and stiffness in joints as also Fever, fatigue or tiredness, and general body weakness.
Hence, we can see that the patient who complains of these symptoms has said that he has lost weight in the past 6 months and often wakes up drenched in sweat and had recently traveled to India on business, and he should immediately be put on medication and further tests.
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The production of ATP in the mitochondria
a. is anaerobic
b. takes place in the outer layer of mitochondria
c. takes place in eukaryotic and prokaryotic cells
d. is directly responsible for beginning the process of making ribosomal RNA
e: requires oxygen
Answer:
E: Requires oxygen
Explanation:
During respiration, glucose reacts with oxygen to form energy stored as ATP which can later be used by the cell.
One out of every hundred people of the Hopi Indian tribe inherits the autosomal recessive disease Glucose-6-phosphate deficiency. How many people in the population of six million are carriers of this disease?
Following the Hardy-Weinberg equilibrium theory, in a population of six million people, 1,080,000 individuals are healthy and carriers (heterozygous) for the trait.
What is the Hardy Weinberg equilibrium?The Hardy-Weinberg equilibrium is a theory that states that populations in equilibrium get the same allelic and genotypic frequencies generation after generation.
These populations do not evolve. No evolutive forces are acting on them.
Assuming a diallelic gene, frequencies are
Allelic frequencies
p is the dominant allele frequencyq is the recessive allele frequencyGenotypic frequencies
p² is the frequency of the homozygous dominant individualsq² is the frequency of the homozygous recessive individuals2pq is the frequency of heterozygous individuals
In a population in equilibrium,
p + q = 1p² + 2pq + q² = 1We will consider these equations to solve the problem.
Glucose-6-phosphate deficiency is an autosomal recessive disease.One out of every hundred people of the affection. So this is the homozygous recessive genotypic frequency.Because we have the frequency of the homozygous recessive genotype, we can get the allelic frequency.
q² = 1/100 = 0.01q = √q² = √0.01 = 0.1Now, by clearing the equation p + q = 1, we can get the dominant allele frequency. And then, the frequency of the homozygous dominant genotype.
p = 1 - 0.1 = 0.9p² = 0.9² = 0.81Finally, we can get the frequency of the heterozygous genotype
2pq = 2 * 0.9 * 0.1 = 0.18The number of individuals with each phenotype in the population is,
0.81 * 6,000,000 = 4,860,000 individuals are healthy not carrier0.18 * 6,000,000 = 1,080,000 individuals are healthy carriers. 0.01 * 6,000,000 = 60,000 individuals have the disease.In a population of six million people, 1,080,000 individuals are healthy and carriers (heterozygous) for the trait.
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What is the frequency of a wave if the velocity is 436.1 m/s and the
wavelength is 17.1 meters?
The frequency of a wave if the velocity is 436.1 m/s and the
wavelength is 17.1 meters is 25.5Hz
What is frequency ?
The quantity of waves that pass a set location in a predetermined period of time is known as frequency. Therefore, if a wave passes through in half a second, the frequency is 2 per second. The frequency is 100 times per hour if it takes 1/100 of an hour.
The temporal rate of change observed in oscillatory and periodic phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light, is specified by the frequency, an essential parameter in science and engineering.
v = f λ
v = velocity of the wave
f = frequency
λ = wavelength
f = v/ λ = 436.1/17.1 = 25.5 Hz
The frequency of a wave if the velocity is 436.1 m/s and the
wavelength is 17.1 meters is 25.5Hz
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examples and non examples of a atom
Question 9 of 10
Which definition best describes a base?
Answer:
Explanation:
1
A chemical agent that makes holes in the inner membrane of the mitochondria would:
-stop the movement of electrons down the electron transport chain.
-stop oxidative phosphorylation
-stop the citric acid cycle
A chemical agent that makes holes in the inner membrane of the mitochondria would stop the movement of electrons down the electron transport chain.
What is Electron?This is referred to as a subatomic particle and it has a negative charge. It is involved in a chemical reaction when it is either gained, lost or shared thereby forming different types of bonds.
A chemical agent that makes holes in the inner membrane of the mitochondria would stop the movement of electrons down the electron transport chain because of the loss of energy which occurs when this is done thereby making option A the correct choice.
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Question 4
When a neuron is not processing information:
O It is negatively charged
O It has no charge
O It is positively charged
O It is sometimes positively charged, sometimes negatively charged
When a neuron is not processing information It is negatively charged.
The correct option is A.
What is the role of neurons?Signals are sent and received by neurons, often referred to as nerve cells, from your brain. Although they share many characteristics with other cell types, neurons are physically and functionally distinct. Neurons are able to communicate electrical and chemical messages to other cells via specialised extensions known as axons.
Where are neurons found?The bulk of neurons in vertebrates are found in the central nervous system, however some are found in peripheral ganglia and many neurones are found in sensory organs like the retina and ear.
What is a neuron made of?Three basic components make up a neuron: a cell body, two extensions known as an axon, as well as a dendrite (3). The nucleus (2), which regulates the functions of the cell and houses its genetic material, is located inside the cell body. The axon resembles a tail and carries signals out of the cell.
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The complete question is -
When a neuron is not processing information:
A- It is negatively charged
B- It has no charge
C- It is positively charged
D- It is sometimes positively charged, sometimes negatively charged
Which of the following are outcomes due to the creation of synthetic fertilizers?
More food waste
Decreased food production
Less runoff pollution
Poor quality produce
Answer:
Poor quality produce
Explanation:
Because synthetic fertilizers are man-made,It has higher levels of Nitrogen and phosphorus which causes weak bones, increased diseases of heart and stroke tendency,hence poor quality products when compared with natural fertilizers
Which of the following groups
of animals could be found in
temperate grasslands?
A. deer, fruit-eating birds, lizards, and snakes
B. bison, longhorns, burrowing animals, birds this
that nest on the ground, and foxes
C. migratory animals, oxen, caribou, and artic
foxes
D. lions, rhinoceros, giraffes, and elephants
the elements are located in certain groups and families based on their
The elements are located in certain groups and families based on their Similar chemical behavior because they have the same number of valence electrons and similar chemical properties.
Hope this helps :)
What cellular structure is degenerating and rebuilding in ms
Answer: Myelin Sheath
Explanation:
In Multiple sclerosis (MS), your immune system attacks the myelin sheath or the cells that produce and maintain it. This attack causes inflammation and injury to the nerve sheath and ultimately to the nerve fibers that it surrounds. The process can result in multiple areas of scarring (sclerosis).
Observe the model below. Explain one strength (advantage) of the model and one limitation (disadvantage).
The double-stranded structure of DNA guarantees that the genetic information stored in it is difficult to change. However, due to the structure of DNA, it does not replicate as quickly as RNA.
What exactly is the structure of DNA?DNA has a double-stranded helix structure. Double strands of DNA are made up of complementary strands that run antiparallel to one another. Each strand is made up of nucleotide molecules linked together by phosphodiester linkages.
DNA's double-stranded structure is significant for the following reasons: This guarantees that each strand may be used as a template to produce or copy the genetic information contained in DNA.
It ensures the long-term storage of genetic information in DNA. However, Rna polymerase takes longer than single-stranded RNA replication due to structural differences. Changes in DNA take time as well.
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D. Variation existed in the traits of the fox population. Foxes with smaller ears and noses were able to stay warmer and were more likely to survive and reproduce to pass their genes on to offspring. Over time, the fox population showed a shift to smaller ears and noses.
The variations in the traits of fox population made them survive more in the cold climate.
What are variations?
Any difference in cells, individuals, or populations of organisms of any species that may be attributed to genetic differences (genotypic variation) or to the influence of environmental conditions on the manifestation of genetic potentials is referred to as variations.Variations in organisms leads to their better adaptations in the adverse climate.What are adaptations?
Adaptation is the feature of an organism's behavior or physical makeup that enhances the organism's capacity for survival in its environment.
Therefore, variations leads to adaptation of organisms which increases their survival rate. Also the genetic variations are passed on to next generations.
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You probably know that you need to breathe oxygen to survive. But how does your body use that oxygen? That oxygen helps your body to release _____ energy that is stored in _____ and other carbon based molecules. The energy is _____ to produce _____. This process of using _____ to produce _____ by breaking down _____ molecules is called _____.
That oxygen helps your body to release chemical energy that is stored in sugars and other carbon based molecules. The energy is released to produce ATP. This process of using oxygen to produce ATP by breaking down carbon-based molecules molecules is called cellular respiration.
What is cellular respiration?In Science, cellular respiration can be defined as a series of metabolic chemical reactions that typically occur in both prokaryotic and eukaryotic cells within living organisms, in order to produce energy in the form of adenosine triphosphate (ATP).
Generally speaking, the first step of cellular respiration is a biological and chemical process that is referred to as glycolysis.
In conclusion, we can reasonably infer and logically deduce that all living organisms such as humans, animals, eukaryotes, etc., breathe in oxygen and exhale carbon dioxide in order to survive, which occurs through a process that is referred to as cellular respiration.
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1. Use the diagram of the molecule at the right to answer this question.
The molecule above is made up of only a few different atoms- for each of the atoms listed below tell me how
many of that type of atom there are (just count them up!)
# of Carbon atoms =
# of Hydrogen atoms =
# of Oxygen atoms =
# of Nitrogen atoms =
According to the diagram the number of No. of Carbon atoms is 9, the number of oxygen atom is 2, the number of hydrogen atom is 9 and the number of nitrogen atom is 0.
The molecule which can be made by the carbon , hydrogen as well as nitrogen atom can be referred as organic molecule.
A complex molecule known as an organic was predominantly bonded carbon atoms joined to other atoms of the same element and/or additional carbon atoms. Each and every living creature on Earth is made up of organic components. Atoms that are bound together form molecules.
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The human body produces 60 billion (60,000,000,000) new cells per day. How many cells does it produce in one hour?
Answer:
E.g. E. coli—20 min, so in an hour 1 cell would turn into 8.
Given that 60 billion cells are produced in a day in the human body, the number of cells that will be produced in an hour can be calculated by dividing the number of cells by the number of hours in a day. There would be approximately 2.5 billion cells produced in one hour.
How frequently are the cells in our body renewed?The human body regularly replaces its own cells. Every day, roughly 330 billion cells, or 1% of all our cells are replaced. The equivalent of a new you will have been replenished in 80 to 100 days with 30 trillion.
Each second approximately one million cells of the body die which means 1.2 kg of the cells are destroyed each day. All the cells in the body have a definite lifespan after which they are replenished.
The dead cells of the body are engulfed in a process called phagocytosis and are transferred to the lysosomes where they are degraded.
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MItosis:
Takes one cell and replicates it into two genetically identical cells.
Takes one cell and replicates it into two genetically unique cells.
Takes two cells, one from each parent, and replicate it into four genetically unique cells.
Takes one cell and replicates it into four cells, each with half of the original cell's genetic information.
Answer: hope this helps have a wonderful day
the answers are adcdbcbcacdbc
Explanation: written questions
1. Raul has scraped his knee and noticed that after a week it had almost completely healed. Raul wondered how the skin was able to repair itself while looking exactly the same as his non-injured skin. In 3-5 sentences explain how mitosis plays a role in healing skin after injury and is able to maintain the look of the existing, non-injured skin
Injured skin produces C-rays that allow for skin to knit itself back together. These C-rays are always present in cells, but are only activated during mitosis by injured skin. This is why there is sometimes scarring left after injury, as the C-rays are not activated as much as healing occurs.
2. In three to five sentences, explain the advantage of keeping some DNA needed by mitochondria in the cell’s nucleus and some in the mitochondria itself.
Mitochondrial DNA is the small circular chromosome present inside the cell organelle called mitochondria used for energy production. This type of DNA passes from the mother to the offspring. Mitochondrial DNA (mtDNA) has several advantages over nuclear DNA (nDNA):for species identification purposes including a higher copy number a lack of sequence ambiguities from heterozygous genotypes .a faster rate of mutation
3. In 3–5 sentences, construct a summary of the process of gene expression, starting with DNA and ending with proteins
The process of gene expression starts with the transcription of the genetic information in the DNA into genetic codes in the form of messenger RNA.
The messenger RNA then undergoes some processing such as modification of tails and removal of non-coding sequence before the genetic codes are translated to their respective amino acids in a process known as translation.
The amino acids are linked together by peptide bonds and the resulting primary protein structure is folded in specific ways depending on their functions.
Mitosis takes one cell and replicates it into two genetically identical cells. Thus, the correct option for this question is A.
What is Mitosis?Mitosis may be defined as a type of cell division through which each parental cell is typically divided into two daughter cells. These daughter cells are genetically identical to the parental cell and are mostly diploid in nature.
On contrary, meiosis is another type of cell division in which each parental cell is divided into four daughter cells which are genetically unique to the parental cell. These daughter cells are haploid in nature. This type of division is known as reductional division. It occurs in the germ cells of organisms.
Therefore, mitosis takes one cell and replicates it into two genetically identical cells. Thus, the correct option for this question is A.
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Only a small amount of the energy stored in food is available to the next organism in a food chain as a result of which of the following?
Only a small amount of the energy stored in food is available to the next organism in a food chain as a result of losses to the environment because 90% of energy is lost in the environment as heat.
what is the food chain?A food chain is described as a linear network of links in a food web starting from producer organisms and ending at an apex predator species, detritivores, or decomposer species.
A food chain also shows how organisms are related to each other by the food they eat.
We know that energy is passed up the food chain from one trophic level to the next but only about 10 percent of the total energy stored in organisms at one trophic level is actually transferred to organisms at the next trophic level. The reason for this is that he rest of the energy is used for metabolic processes or lost to the environment as heat
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What surrounds a fertilized
embryo that protects and
nourishes it?
A. a leaf
B. a seed coat this
C. a cone
Answer:
B that other person was just had a
weird answer
Explanation:
Answer: B, a seed coat
Explanation:
Which stage of cell cycle does cells divide into 2 cells
Answer: Cytokinesis
Explanation: P. S. it's not a stage, just the final step.
hope this helps.
10. Which organisms are responsible for spreading the heartworm?
Infections with the Dirofilaria worm result in the disease known as dirofilariasis. One type, known as "heartworm disease" in dogs, is brought on by D. immitis.
How long can a dog skip a dose of heartworm medication?If a dose is missed, the majority of monthly heartworm medications provide at minimum 15 days of protection. This implies that even if you are just a week two late, your pet is probably still protected at that period and won't likely contract the infection.
Can people contract heartworms?Heartworms can occasionally be contracted after already being bitten by an anopheles mosquitoes. However, because humans are not heartworms' natural hosts, the larvae typically move to the arteries and lungs where they die before maturing into adult worms.
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farmers are aware that chemical fertilizers cause damage to the soil, they still use it because of ?
Fertilizers maximize crop yield and increase plant production so, it is used by the farmers in the field.
What are Fertilizers?Fertilizers are the food for plants which provide nutrients to the plants for growth. These are the chemical substances which is applied to the crops to increase their yields and production. It can be of natural or synthetic origin which is applied to soil or to plant tissues to supply plant nutrients.
There are three types of fertilizers which provide the growth to the plants.
1. Nitrogen
2. Phosphorus
3. Potassium
These fertilizers can be used in the field
N, P and K Fertilizers.Micronutrient FertilizersRock PhosphateOrganic Manures.Thus, fertilizers maximize crop yield and increase plant production so, it is used by the farmers in the field.
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explain the role of every organization and media in contagion movie ?
Users commonly expressed unpleasant sentiments on social media platforms and shared those emotions.
What are social networking sites used for?The term "social media" refers to online platforms that enable people to share, create, and/or exchange knowledge and ideas with one another. In charge of managing is the Office of Communications und Marketing.
What is the function of social media?Social media is used by billions of people to communicate and exchange information on a global scale. Social media allows you to connect with loved ones, learn new things, pursue your interests, and find enjoyment for yourself.
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URGENT
A steroid hormone approaches its target cell. Which will happen first?
The hormone will enter the nucleus
The hormone will combine with proteins to form lipoproteins
The hormone and its receptor will interact with the DNA
The hormone and its receptor will enter the cell’s nucleus
A steroid hormone approaches its target cell, therefore the hormone will enter the nucleus and is what will happen first which is therefore denoted as option A.
What is a Hormone?This is referred to as a chemical messenger which is released directly into the bloodstream and is responsible for the control of certain metabolic reactions occurring in the cell and an example is steroid hormone such as androgens.
In a situation whereby a steroid hormone approaches its target cell, it first passes through the plasma membrane before it then becomes adhered to the receptors which are present in the nucleus or cytoplasm.
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Hemoglobin is a protein that carries oxygen in red blood cells. The hemoglobin molecules produced by some people have one specific amino acid that is different from the amino acid at that position in normal hemoglobin.
Which of the following is the most likely cause of this amino acid variation?
Group of answer choices
The hemoglobin gene contains a mutation.
Enzymes replace the amino acid once the hemoglobin is produced.
An additional amino acid is mistakenly inserted into the hemoglobin during translation.
An error occurs during the folding of the hemoglobin protein.
Answer:
My best guess is "The hemoglobin gene contains a mutation".
Explanation:
Sorry, I'm not an expert so bear with me!
One more common hemoglobin-related mutation is sickle-cell anemia. It occurs when the amino acid in hemoglobin is substituted from glutamate to valine. It is considered a mutation and is a direct swap from one specific amino acid (glutamate) to a different amino acid (valine) in the same position in the hemoglobin. So, considering that our example (sickle-cell anemia) fits the criteria of swapping one amino acid for another in the hemoglobin, is a mutation, and is passed down genetically (meaning that the hemoglobin gene would need to carry the mutation) it does look a bit like it fits your parameters!
Thus, as I understand it the hemoglobin gene carrying a mutation would make sense as the most likely cause of the amino acid variation.
Again, this is based on 10 minutes of googling. I hope this helps, but apologies if I'm incorrect!! Good luck :)
