Gravity keeps the atmosphere close to earth's surface.
What is gravity?Gravity is described as a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is also that force that attracts a body towards the center of the earth or any other physical body having mass.
Sir Isaac Newton first discovered gravity in the year of 1687 while sitting under an apple tree, he noticed an apple falling down.
In that scenario, he tried to figure out why the apple came down instead of going up or left or right.
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The period of cell growth and development between mitotic divisions?
The period of cell growth and development between mitotic divisions is interphase.
Аctively dividing eukаryote cells pаss through а series of stаges known collectively аs the cell cycle: two gаp phаses (G1 аnd G2); аn S (for synthesis) phаse, in which the genetic mаteriаl is duplicаted; аnd аn M phаse, in which mitosis pаrtitions the genetic mаteriаl аnd the cell divides.
G1 phаse. Metаbolic chаnges prepаre the cell for division. Аt а certаin point - the restriction point - the cell is committed to division аnd moves into the S phаse.S phаse. DNА synthesis replicаtes the genetic mаteriаl. Eаch chromosome now consists of two sister chromаtids.G2 phаse. Metаbolic chаnges аssemble the cytoplаsmic mаteriаls necessаry for mitosis аnd cytokinesis.M phаse. А nucleаr division (mitosis) followed by а cell division (cytokinesis).The period between mitotic divisions - thаt is, G1, S аnd G2 - is known аs interphаse.For more information about mitotic divisions refers to the link: https://brainly.com/question/14259315
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The process of genetic engineering usually involves altering the dna of an organism so that.
Changing an organism's DNA in order to transfer the resulting hybrid DNA into the organism to create new microbial genetic combinations.
How is DNA altered for genetic engineering purposes?DNA is inserted into an organism's genome as part of the GM technology. New DNA is introduced into plant cells to create a GM plant. The cells are typically cultured in tissue culture after which they transform into plants. The modified DNA will be passed along to the seeds that these plants generate.
What does genetic engineering serve?The goal of genetic engineering is to alter the genes to increase the organism's capabilities beyond what is typical. The potential application of both of these technologies in nonhuman animals and plants has generated ethical debate.
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Which a round body that contains dna and regulates gene expression
A round body that contains DNA and regulates gene expression is the nucleus.
What is a nucleus?The nucleus is а membrаne-enclosed orgаnelle found in most eukаryotic cells. The nucleus is the lаrgest orgаnelle in the cell аnd contаins most of the cell's genetic informаtion (mitochondriа аlso contаin DNА, cаlled mitochondriаl DNА, but it mаkes up just а smаll percentаge of the cell’s overаll DNА content). The genetic informаtion, which contаins the informаtion for the structure аnd function of the orgаnism, is found encoded in DNА in the form of genes.
The function of the nucleus is to mаintаin the integrity of these genes аnd to control the аctivities of the cell by regulаting gene expression. Gene expression is the process by which the informаtion in а gene is "decoded" by vаrious cell molecules to produce а functionаl gene product, such аs а protein molecule or аn RNА molecule.
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How would you use or change this lab to calculate the speed of a car, train or
airplane?
To measure speed in the laboratory, a distance value and a time value are needed. The time value can be measured accurately with light gates, although a stopwatch can also be used.
What are the methods for measuring speed in the lab?With an automobile as for any other object, the formula for distance and speed is distance time. The calculation is (60 x 5280) (60 x 60) = 88 feet per second to get a car's speed at 60 miles per hour a train level measure that divides the total number of transit hours by the total number of miles travelled to determine the average speed of a train between its origin and destination stations. You can use your Ground Speed in the straightforward relationship between speed, distance, and time now that you know it. You only need to divide the distance by your ground speed because you already know how far you are from your goal.To learn more about measuring speed refer to:
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Which of the following statement is true regarding natural selection?ANatural selection may lead to evolution.BDifferences in reproduction and survival are due to variation among organisms.CThe initial population varies in many traits. Individuals have one version of some traits.DAll of the above.
Option d is Correct. Darwin introduced the concept of natural selection (survival of the fittest). This hypothesis contends that more people are created with each passing generation, and they fight for survival.
Phenotypic variation exists among individuals and the variation is heritable; those individuals with heritable traits that are better suited to the environment will survive and reproduce. Those individuals that can inherit the adaptations according to the change in the environment will survive, and the rest will die.
Differential reproduction is what is done in this situation. At the time of reproductive isolation, new species (evolution) will develop. Natural selection is demonstrated by the industrial revolution in the black peppered moth.
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List the layers in order from oldest to youngest
A student creates a table to compare the function of macromolecules found in a human cell. However, the top of the table where the macromolecule headings were located was cut off. The student wants to place the headings back on the table from left to right. Which sequence depicts the correct order of headings that pairs them with the appropriate function?.
A sequence explaining the macromolecule title and its correct function:
Carbohydrate → Energy source Short-termLipid → Thermal insulation Long-term storage,Nucleic → Acid Holds the genetic, Protein → Various functionsMacromolecules are giant molecules with very long chains made up of simpler molecules (monomers). Compounds that include macromolecules are polymers and biomolecules (carbohydrates, proteins, fats, etc.).
Carbohydrates act as forming components of cell membranes, cell walls, and cell nuclei and are a source of energy for cells.
Protein is an important macromolecule that acts as an enzyme activity in cells, protein is also a means of transportation, hormones, and antibodies. Proteins and fats are the building blocks of cell membranes.
Nucleic acids are composed of DNA and RNA. These molecules are essential for healthy cells, and their presence is essential for DNA and RNA replication. Nucleic acids play an important role in transmitting genetic information, providing important coenzymes and energy sources, and regulating protein synthesis.
The question is multiple choice: (table in the picture)
A) Carbohydrate, Lipid, Nucleic Acid, ProteinB) Lipid, Carbohydrate, Nucleic Acid, ProteinC) Carbohydrate, Lipid, Protein, Nucleic AcidD) Lipid, Carbohydrate, Protein, Nucleic AcidThe correct answer is A
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Ronald pushes a box up an inclined plane with 35% efficiency. If 224 joules of energy went into moving the box, how much energy did ronald put into the inclined plane?.
Energy put into the inclined plane is 640 joules.
How would you define efficiency?The ability to do a task with little to no waste, effort, or energy is referred to as efficiency. Being effective is using the resources you have as effectively as possible to attain your goals. Simply put, if there is no wastage and all procedures are optimizer, something is efficient.
What does "work efficiency" mean?When employees complete the proper jobs in the proper manner with the least amount of time and effort wasted, they are being efficient. Ultimately, increasing workplace productivity involves assisting workers in doing more with less.
Solution:-
Ronald applied 640 joules of energy to the inclined plane.
How to calculate the energy input
Efficiency, as we all know, is the ability to complete a task with little to no waste. In mathematics, it can be written as
Efficiency is defined as (output / input) 100.
The input energy can be found using the formula above as follows:
224 joules equal output work
35% efficiency
Work entered =?
Efficiency is defined as (output / input) 100.
35% = 224 / input
0.35 = 224 / input
multiply by cross
0.35 × input = 224
Add 0.35 to both sides.
Work input = 224 / 0.35
Work input = 640 joules
The energy input is 640 joules as a result.
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Explain what cartilage does in the mature horse.
Cartilage serves as a cushion between bones in the mature horse.
What is a cartilage?
Cartilage is a type of strong but flexible connective tissue found in many areas of the body including the joints, ears and nose. It is composed of cells called chondrocytes which are surrounded by a matrix of collagen fibers and other proteins. Cartilage provides cushioning, flexibility and strength to the body, allowing for movement and sound production.
It also provides support and stability to the joints, helping to absorb the shock of movement. Additionally, cartilage helps to lubricate the joint and allow smooth movement of the bones.
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Cell differentiation is the result of gene expression. Genes can be regulated several ways. For example, small interference rna molecules (sirna), prevent gene expression by binding to the product of transcription. How do sirna molecules silence genes?.
Due to their affinity for mRNA, siRNA block gene expression by attaching to the result of transcription.
SiRNA molecules silence genes in what ways?Gene expression leads to cell differentiation. There are various techniques to control genes. Small interference RNA molecules (sirna), for instance, stop gene expression by attaching to the transcriptional product.
What does differential gene expression look like?Only red blood cells produce hemoglobin, and this is because these genes were activated throughout the process of differential gene expression, identifying this kind of cell. Only red blood cells have activated hemoglobin-producing genes; brain and muscle cells do not.
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An atom of iron has an atomic number of 26 and a mass number of 56. How many protons plus neutrons are in the nucleus?.
The number of protons in an atom is also referred to as the atomic number, so an atom of iron has 26 protons in its nucleus. The mass number of an atom is the sum of the number of protons and neutrons in the nucleus. So, to find the number of neutrons in the atom, we can subtract the number of protons (26) from the mass number (56):
56 - 26 = 30 neutrons.
So, the number of protons plus neutrons in the nucleus is:
26 protons + 30 neutrons = 56.
About how much solar energy does the earth absorb when compared to the total amount that hits it?
O 25%
O 50%
O 75%
O 100%
Answer:
25%
Explanation:
The meniscus cushions articulating surfaces of bones.
True or false
Pls help 35 points dont look in the internet
contrast how is facilitated diffusion from active transport
Answer:
join
Explanation:
dab-uwgx-xcg the world of Hindi
How many molecules of carbon dioxide are released in Krebs cycle per glucose molecule?A. 2B. 3C. 4D. 6
Two particles of acetyl-CoA are delivered from every glucose atom so two turns of the Krebs cycle are required which yields four CO2, six NADH, two FADH2, and two ATPs.
There are two carbon dioxide particles delivered for each atom of pyruvate in the Krebs cycle. They are delivered during decarboxylation responses.
Two particles of carbon are made per cycle, alongside three atoms of NADH, one particle of FADH2, and one particle of ATP or GTP. Every glucose particle produces two acetyl CoA atoms, enough for two cycles.
Clarification: During glycolysis, 2 particles of NADH are delivered per glucose. During the Krebs cycle, 3 particles of NADH are delivered per acetyl-CoA.
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Chlorophyllis BEST defined as...
A.The sugar molecule made by plants.
B.The nutrients required by plants in the soil.
C.The cell organelle responsible for photosynthesis.
D.The pigment in leaves responsible for absorbing light and giving them a green color.
The chlorophyllis was The pigment in leaves that absorbs light and gives them their green color.
what is photosynthesis ?
Photosynthesis is a process that plants and other organisms utilise to transform light energy into chemical energy that may then be released to power the organism's activities via cellular respiration. Some of this chemical energy is stored in carbohydrate molecules, such as sugars and starches, which are created from carbon dioxide and water - thus the name photosynthesis, from the Greek "putting together". Photosynthesis is performed by the majority of plants, algae, and cyanobacteria; these organisms are known as photoautotrophs. Photosynthesis is responsible for creating and maintaining the oxygen content of the Earth's atmosphere, as well as supplying the majority of the energy required for life on Earth.
The chlorophyllis was The pigment in leaves that absorbs light and gives them their green color.
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If you put a red blood cell into a glass of pure water, what would happen?
When red blood cells are placed into a solution with higher concentration as compared to their contents (eg pure water) will gain water by osmosis, burst and swell up.
Osmosis is termed as the net movement of water across with semipermeable membrane. This across of membrane, water will moves from an area of higher concentration to lower concentration.
If red blood cells are placed in water, then water enters the cell by osmosis. Because the membrane is quite very weak the cell will burst as the volume and therefore the pressure in the cell will increases. Red blood cells shrink when it placed in the concentrated solutions of sugar as water moves out of them by the osmosis.
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Which of Mendel's laws says alleles separate?
Answer:
metaphase
Explanation:
they have three phases but this phase said chromatides will separate in this phase
What classes might you take in high school to get prepared if you wanted to be a forensic pathologist or forensic anthropologist?
chemistry, biology, physics, statistics and calculus
summarize how tropism demonstrates a plant’s response to external stimuli.
Tropism can be defined as the movement of plants in response to an external stimuli.
Tropism is a term which is used to describe how a particular plant responds to an external stimuli by growing, turning or moving towards or away from it. When the movement of plant is towards the stimulus, it is known as positive tropism and when the movement is away from the stimulus it is known as negative tropism.
For example, phototropism is the movement of a part of the plant in response to light. When the movement of plant occurs towards the light, it is known as positive phototropism and when it occurs away from it, it is known as negative phototropism.
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What are two characteristics of r-selected species?
These characteristics of R-selected species perfectly:
Rapid development. High reproductive rate. Early reproductive age. Small body size. One reproductive cycle. Short lifespan. Poor competitive ability. High mortality of offspring.What is r-selected species
r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O. Wilson; K-selected species—that is, species whose population sizes fluctuate at or near their carrying capacity (K)—make up the second strategy.
The production of numerous small offspring followed by exponential population growth is the defining characteristic of r-selected species. They require short gestation periods, mature quickly (and thus require little or no parental care), and possess short life spans. Unlike K-selected species, members of this group are capable of reproduction at a relatively young age; however, many offspring die before they reach reproductive age.
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Some clouds are made up of tiny ice crystals. Which two spheres are clouds
a part of?
Write a 2–3 paragraph report of at least 225 words on the factors that you believe contribute to the different category values for your home state. (for West Virginia)
The 2–3 paragraph report of on the factors that I believe contribute to the different category values for your home state of West Virginia are written below:
Towards the growth of West VirginiaWest Virginia is a state located in the Appalachian region of the United States and it has been facing several economic, social and demographic challenges. Some of the factors that contribute to different category values for West Virginia are as follows:
Economic Factors: The state has been facing economic challenges such as high poverty rates, low median income, and high unemployment rate. The mining industry, which was once a major contributor to the state's economy, has been in decline for decades, resulting in a lack of employment opportunities and economic hardship for many residents. Demographic Factors: West Virginia has an aging population, with a higher proportion of older adults compared to the national average. This is partly due to a lack of job opportunities and economic opportunities, which causes younger residents to leave the state in search of better prospects.
Lastly, Social Factors: The state also struggles with significant social issues such as high rates of drug addiction and opioid abuse, which can contribute to lower life expectancy and higher rates of poverty. The state also has a higher rate of disability and chronic health conditions, which can further contribute to lower median income and higher poverty rates. These factors, among others, contribute to the different category values for West Virginia. Despite the challenges, there are efforts being made to address these issues and improve the lives of West Virginia residents.
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Due to their fertile soil, grasslands and estuaries are being used for which purpose?
Agriculture
Fishing
Manufacturing
Tourism
The purpose of estuaries are being used for agriculture.
What does an estuary serve as?In order to provide cleaner waters for people and marine life, estuaries filter out silt and impurities from streams and lakes before they run into the ocean.
Estuaries serve as free-standing filters. Runoff from the land can carry sediments, fertilisers, and pollutants into estuaries, where a natural filtration mechanism can help keep some of them from entering the water supply.
Benefits of estuaries:They serve as barriers, defending lands from storms and pounding seas.They aid in halting soil erosion.They absorb extra floodwater as well as tidal surges.They provide as crucial habitat for migratory birds, fish, and invertebrates of ecological and commercial importance.What are the top three benefits of estuaries?Estuaries are valuable from a business standpoint, and the resources they provide are profitable for the tourist, catching fish, and recreational industries. Estuaries, which provide harbours and ports essential for shipping and transit, also support significant public infrastructure in their protected coastal waters.
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Cytoplasm is randomly distributed to haploid cells.
True/false
False. Cytoplasm is not randomly distributed to haploid cells.
Haploid cells refer to cells that have a single set of chromosomes, as opposed to diploid cells that have two sets. The process of cell division, called mitosis, is responsible for the distribution of cytoplasm and chromosomes to the new cells. The cytoplasm and chromosomes are divided equally between the two daughter cells. The process is highly regulated and orchestrated to ensure that the cells have the correct amount of cytoplasm and chromosomes to function properly. It's important to note that, in some cases, in some organisms, such as fungi, there is a process called plasmogamy, where cells fuse, but their nuclei do not, resulting in a cell with multiple nuclei but a single cytoplasm.
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Non-example of Respiration
The pedigree suggests that the gene is on a nuclear chromosome, and not on mitochondrial DNA, because
Given that maternal mitochondrial mutations are transmitted by all of a mother's offspring, the pedigree shows that the gene is on a nuclear chromosome rather than a mitochondrial DNA.
What distinguishes nuclear DNA from mitochondrial DNA?The majority of cellular operations are carried out by nuclear DNA, which is DNA found in the nuclei of cells. The form of nuclear DNA is very different from that of mitochondrial DNA, which is related to animals, plants, and fungi.
Why is nuclear DNA better than mitochondrial DNA for our needs?In contrast, nDNA is more conserved than mtDNA, especially the nuclear rRNA genes. The highly conserved sequences in nuclear rRNA genes make them a potentially valuable source of genetic markers for resolving higher taxonomic levels for species.
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At the end of anaphase I how many chromosomes are on each side?
Answer:
23
Explanation:
At the conclusion of anaphase, each end of the cell has an identical and complete set of 46 chromosomes or 23 pairs of homologous chromosomes; they are still diploid. Telophase: Telephase begins once the chromosomes have completed separating and reached the opposite poles of the cell.
the nerve cell that connects sensory and motor neurons?
How often is it recommended that adults get at least 30 minutes of vigorous physical activity a week?
Get at least 150 minutes (for instance, 30 minutes a day, five days a week) of aerobic exercise of a moderate intensity per week.
And Participate in muscle-strengthening exercises involving all major muscle groups at least twice each week.
The more physical exercise you engage in, the more benefits there will be for your health. a minimum of 150 minutes per week for instance, 30 minutes per day, five days per week of moderate intensity exercise like brisk walking. Or they require 75 minutes per week of intense action like jogging, running, or mountaineering.
Older persons should be as physically active as possible even if they are unable to complete 150 minutes of weekly moderate-intensity aerobic activity (for instance, 30 minutes five days a week).
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