During the metaphase, chromosomes are taken to the equatorial plane, were they randomly line up. Option B. Mitotic spindle attaches to the chromosome's centromeres and lines them up in the middle of the cell.
What is the metaphase?
Metaphase is one of the cell division stages that follows the prophase and precedes the anaphase.
During this phase, chromosomes are taken toward the center of the cell by the spindle apparatus. Once in the equatorial plane, chromosomes randomly line up.
Once aligned, each chromatid joins with a microtubule of opposites poles and gets ready to go through the anaphase. Sister chromatids are held together until they reach the Anaphase.
Since chromosomes in this stage are well defined and can be observed in detail under the microscope, they are used to create karyotypes and identify chromosomal abnormalities.
These chromosomes have the typical X shape.
Among the options, the one that correctly describes the metaphase is Option is B. Mitotic spindle attaches to the chromosome's centromeres and lines them up in the middle of the cell.
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8. Which of the following are true of cells? Select all that apply.
All cells are surrounded by a membrane.
Most cells have some type of genetic material.
All cells have a nucleus.
All cells have cytoplasm.
Cells can be categorized as prokaryotic or unicellular.
Two individuals who are heterozygous for both genes in a dihybrid cross mate. What are the chances that their offspring will also be heterozygous for both genes? (Type answer as a decimal)
The probability that the offspring of the parents who are both heterozygous in a dihybrid cross are also heterozygous for both genes is 0.25
What is a dihybrid cross?A dihybrid cross is a cross in which two different traits are involved in the crossing.
For example, the trait for height and color of hair in two parents being crossed is a form of a dihybrid cross.
Assuming two two traits are Ss and Yy, where the dominant traits are S and Y and the recessive traits are s and y.
The two individuals are heterozygous for both genes means that their genotype are both SsYy.
The dihybrid cross is shown in the attached image;
Based on the attached image, the heterozygous offspring for both genes SsYy are 4 out of the possible 16 offspring.
The probability of offspring that are heterozygous for both genes = 4/16 = 0.25
In conclusion, in a dihybrid cross, two traits or genes are involved in the cross and a possible number of 16 offspring are produced from the cross.
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Which of the following factors would you expect to affect the rate of photosynthesis? Choose all that apply. You will be deducted for incorrect answers.
Select one or more:
a.
Amount of solar energy available
b.
Carbon dioxide concentration
c.
Amount of oxygen available
d.
Water availability
Answer:
Carbon dioxide concentration
Explanation:
Even if there is plenty of light, a plant cannot photosynthesise if there is
insufficient carbon dioxide.
Putting a prescription on file allows the prescription to be filled electronically and a ) charges the insurance company , but doesn't fill the order . b ) charges the insurance company , but sends the filled prescription to the patient's physician . c ) charges the insurance company , fills the order , but holds it until needed . d ) doesn't charge the insurance company or fill the order .
Putting a prescription on file allows the prescription to be filled electronically and sets the insurance company , but sends the filled prescription to the patient's physician.
What is the process of filling a prescription?
The prescription fill process has five detailed steps. They include input & initial check, therapeutic check, preparation, technical review and supply and educate. These focus on an objective and precise prescription filling process that is safe and legal for both the client and the pharmacist.
What is the main advantage of an electronic prescription?
E-prescribing also helps to make patient care more efficient. It simplifies the process of getting the medication to the pharmacy, dispensing the medication, and getting refills. Because the patient is not given a hard copy of the medication, the possibility for losing the prescription is eliminated.
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Describe one or more of the scientific theories regarding the origin of life on the early Earth. Explain how RNA is important to this theory.
The RNA world is a hypothesis associated with the emergence of life on Earth and it is important because states that RNA had catalytic functions.
What is the RNA world?The RNA world is a scientific theory that states life began as primitive organisms in which the RNA played a dual function, i.e., as genetic material and as an enzyme.
The RNA world theory is sustained by the presence of ribozimes, i.e., enzymes composed of RNA instead of proteins.
In conclusion, the RNA world is a scientific hypothesis associated with the emergence of life on Earth and this theory is important because it states that RNA had catalytic functions.
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Name each structure
Answer:
The brochuus
hope I helped.
What is a scientific explanation of a law?
A. an idea that can't be proven but can explain some phenomena
B. a statement based on repeated experiments and observation that can predict what will happen
C. an educated hypothesis that is supported with evidence
D. a hypothesis that can be tested
Answer:
It is B
Explanation:
A statement based on repeated experiments and observation that can predict what will happen
a scientific explanation of a law is a statement based on repeated experiments and observation that can predict what will happen. Hence option B is correct.
What is Law in Physics ?Scientific laws, often known as rules of science, are assertions that explain or predict a variety of natural events based on repeated tests or observations. In several circumstances (approximate, exact, wide, or limited), the term law is used differently across all domains of natural science (physics, chemistry, astronomy, geoscience, biology). Laws are derived from facts and can be further refined through mathematics; in all cases, they are founded on empirical evidence, either directly or indirectly. It is widely assumed that they implicitly reflect, though do not overtly claim, underlying causal linkages in reality and are found rather than constructed.
Physics laws are, by definition, stated facts that have been inferred and drawn from empirical data. Simply said, the world around us operates in a specific manner, and physical laws are a means of categorizing that operation.
Hence option B is correct.
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Which best explains the relationship between flying dragons and trees?
a.
Flying dragons rely on trees for a food source, but not for shelter.
b.
Flying dragons live exclusively in trees except to lay eggs.
c.
Flying dragons burrow into the tree without causing damage to the tree.
d.
Flying dragons use trees for reproduction, but get their food and shelter on the ground.
Please select the best answer from the choices provided
A
B
C
D
Answer:
b.
b.Flying dragons live exclusively in trees except to lay eggs.
differentiate between alimentary canal and digestive system
Explanation:
The digestive system runs from the mouth, gullet, stomach, liver, pancreas, duodenum/upper small intestine, ileum/ lower small intestine, large intestine, appendix, rectum and anus. However the alimentary canal has all the above features except for the liver and pancreas
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The use of propaganda as a way of exerting influence over others is what type of structural power?
Answer:
i think is the soft power
What is Osmosis.. Please define it and give some examples.
Answer:
Explanation:
osmosis is the movement of water molecules from the region of higher concentration to the region of lower concentration down the concentration gradient.
some of the examples are root hair cells as they absorb water molecules from the soil and are low in concentration compare to the soil. so osmosis takes place
Which of the following
places is likely to have low
biodiversity?
OA. Great barrier reef
B. Man-made pine tree plantation
OC. Indian Ocean
OD. Amazon rainforest
Man made pine tree plantation is likely to have low biodiversity. Thus option B is correct .
What is biodiversity?Biodiversity is all the different kinds of life living in a particular area like the variety of animals, plants, fungi and microorganisms like bacteria and virus that plays a major role in framing of natural world usually three levels of biodiversity are observed and these are genetic species, and ecosystem diversity.
Biodiversity is very important for the process that's support all life present on earth including human.
Therefore, man made pine tree plantation is likely to have low biodiversity. Thus option B is correct .
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Which of the following are dangers of Climate change?
I. Disease carrying insects could multiply and spread to new areas
II. The number of floods could increase
III. Due to increased humidity, electricity would be harder to generate and more expensive
IV. Severe droughts could occur
A. II and IV
B. I and III
C. I, II, IV
D. II, III, IV
Answer: D
Explanation:
The following are the dangers of climate change are
I. Disease carrying insects could multiply and spread to new areas.
III. Due to increased humidity, electricity would be harder to generate and more expensive.
IV. Severe droughts could occur.
The correct option is D.
What is climate?Climate is the weather of a place for a long time. Like, the climate of Antarctica is always cold, and the oceans are always frozen. There are different climates in different areas.
Climatic changes are the long term effects that are changing the normal temperature and climatic conditions of an area. This is causing problems with the biotic factors of the area.
Like, the warming of Antarctica is increasing, which is resulting in the melting of ice, which can cause high floods.
Thus, the correct option is D. II, III, IV.
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Which are the main parts of a flowering plant? Select four options. seeds roots stem leaves flowers
Answer:
Flowers stem leaves roots.
Explanation:
The main parts of a flowering plant are flowers stem leaves root.
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What type of infection caused the most deaths in 1999?
A. Measles
B. HIV/AIDS
C. Malaria
D. Respiratory infection
Respiratory infection caused the most deaths in 1999.
The proportion of respiratory samples that tested positive for influenza peaked during the 1999–2000 flu season at 33%, while the state and territorial epidemiologists' reports peaked at 44 states reporting either regional or widespread influenza activity. It was originally discovered in military soldiers in the US in the spring of 1918. One third of the world's population, or roughly 500 million people, are thought to have contracted this virus. The lungs, nose, and throat are affected by the flu. High-risk groups include young children, elderly individuals, pregnant women, persons with chronic illnesses, and those with weakened immune systems.learn more about Respiratory infection here: https://brainly.com/question/2526467
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What causes earthquakes?
How are earthquakes measured and how big can they get?
Explanation:
Earthquakes are caused by friction at the ends of tectonic plates. WHen they become stuck at their edges from this friction, stress builds up,, and eventually overcomes the friction, becoming an earthquake. Earthquakes are measured on the Richter scale. The largest earthquake ever documented was 9.5 in Chile on May 22nd, 1960.
A genetic experiment with peas resulted in one sample of offspring that consisted of:________
Answer:
439 green peas and 166 yellow peas for your answer
3. Compare the advantages and disadvantages of disposing of municipal solid waste in sanitary landfills and by incineration.
Lowers population of pest is the advantages of disposing of municipal solid waste in sanitary landfills whereas high cost and damage to health are the disadvantages of disposing of municipal solid waste in sanitary landfills
What are the advantages and disadvantages of disposing waste in sanitary landfills?The main advantage of disposing of municipal solid waste in sanitary landfills is that it minimizes pests such as rodents and insects that can carry many diseases. The disadvantage disposing of municipal solid waste in sanitary landfills is that it can be costly and can cause problems with a sanitary landfill is the environmental hazard.
So we can conclude that lowers population of pest is the advantages of disposing of municipal solid waste in sanitary landfills whereas high cost and damage to health are the disadvantages of disposing of municipal solid waste in sanitary landfills.
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Incineration has the advantage of reducing the volume of the final waste that should be disposed thereby helping in the process of waste disposal.
What is a landfill?A landfill is an area that has been set aside for the disposal of refuse. It is a large area that could consist of an open pit into which refuse could be poured from time to time.
Now, incineration has to do with the burning of waste materials. The sanitary landfills tend to protect the environment from the possible release of harmful fumes and carbon wastes. On the other hand, the disadvantage of the sanitary land fills is that there is the possibility of ground and surface water contamination by toxic materials.
Incineration has the advantage of reducing the volume of the final waste that should be disposed thereby helping in the process of waste disposal.
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If a design has a flaw, what is next logical step for the design team?
Modify the design.
Test the prototype.
Scrap the project.
dentify the need.
3.
Which type of stress is shown in the image?
O A. Shear stress
O B. Tension stress
O C. Compression stress
O D. Uniform stress
O C. Compression stress is the answer of this question
Compression stress is the correct answer
what are the difference between stress and strain ?The major difference between stress and strain is that stress determine the deforming force per unit area of the object, whereas strain determine the relative change in length caused by a deforming force.
a force applied to deform an object, that object is under stress where Stress is defined as the deforming force per unit area of the object.
force on an object into directions parallel and perpendicular to the surface and the normal stress is equal to the force perpendicular to the surface per unit area.
Strain is the amount of relative deformation caused by a force acting on an object, will only consider the normal strain, created by normal stress.
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Give an example of a good hypothesis, and explain why a hypothesis is important.
Explanation:
it ensures the entire research methodologies are scientific and valid
Organisms can display explosive population growth called __________ when resources are abundant and there is no competition.
Bb mates with BB?
Select one:
O a. All of the offspring will exhibit the
recessive trait.
O b. The dominant trait will show up in
about 75% of the offspring.
O c. All of the offspring will exhibit the
dominant trait.
O d. The recessive trait will show up in
about 50% of the offspring.
In complete dominance, the dominant alleles hide the expression of the recessive allele. Option C. All of the offspring will exhibit the
dominant trait.
What is complete dominance?
Complete dominance occurs when one of the alleles -the dominant one- completely hides the expression of the other allele -the recessive one- in heterozygous individuals.
Cross: BB x Bb
Gametes: B B B b
F1)
50% of the progeny will be homozygous BB
50% of the progeny will be heterozygous Bb
100% of the progeny will express the dominant trait.
The correct option is C. All of the offspring will exhibit the dominant trait.
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which function in ms excel must begin with which calculations sign
All formulas in Excel must begin with an equals sign (=).
This is the case because both the formula and the value it calculates are present in or equal to the cell.
What are the main functions of ms excel?
An Excel function is a pre-written formula that facilitates the completion of mathematical, statistical, and logical tasks. When you are comfortable using a function, all you need to do is enter an equal sign (=) in the cell, the function's name, and the cell range it applies to.
IF function; Using Excel's IF function, two values are logically compared. Either TRUE or FALSE is the outcome of the IF function. For instance, we can determine whether cell B2's value exceeds cell A2's value. If so, the outcome is TRUE; otherwise, it is FALSE.Text Functions: If you work with data that contains text, the functions listed below will help you work more effectively.VLOOKUP function; Vertical Lookup is referred to as VLOOKUP. It is a function that instructs Excel to look in a column (the so-called "table array") for a specific value in order to retrieve a value from another column in the same row. You will learn how to use the VLOOKUP function from this tutorial.Date functions: One of the main components of data that you use every day is dates, which you may utilize to better evaluate your data.MATCH function; The relative location of a value is returned by the MATCH function after searching for it in a range of lineair cells.Time Functions: Time can appear in data just like dates do, and you can use time functions to work with data that contains time values.Logical Functions: You can use logical functions to build some of your spreadsheet's most useful formulas.Statistical Functions: One of Excel's best features is the abundance of statistical functions available for quick data analysis.Information Function: You can use these particular functions to learn more about the values you provided.Financial Functions: You may easily perform some of the common yet crucial financial calculations with these functions.To learn more about Function of ms excel, refer to:
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If you added 1 ml of an aqueous solution of NaCl at 0.4 mol/l to 9 ml of water, what would be the final concentration of NaCl in the solution?
Taking into account the definition of dilution, the final concentration of NaCl in the solution is 0.04 mol/L.
DilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeFinal concentrationIn this case, you know:
Ci= 0.4 mol/LVi= 1 mLCf= ?Vf= 1 mL of aqueous solution of NaCl + 9 mL of water= 10 mL solutionReplacing in the definition of dilution:
0.4 mol/L × 1 mL= Cf× 10 mL
Solving:
(0.4 mol/L × 1 mL)÷ 10 mL= Cf
0.04 mol/L= Vf
In summary, the final concentration of NaCl in the solution is 0.04 mol/L.
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Which describes a transplant using healthy bone marrow cells from a compatible donor?
Answer:
Allogeneic transplants involve the use of cells from a donor.
What is a hypothesis?
A. A random guess
B. An educated prediction based on knowledge
C. A theory
D. A way for scientists to make up lies
write the functions of the modified stems give some examples to
Many plants have modified stems that serve various purposes, including storage, protection, photosynthesis, support, propagation, and perennial growth.
What are the functions of modified stems, and explain them with examples?Underground Stem Modifications:
These can be found underground, as their name suggests. They have a variety of uses, including food storage, reproduction, and perpetuation. By having nodes and internodes, they may be distinguished from roots. They support asexual reproduction and the plant's ability to endure a period of hibernation. They offer a defense against animal grazing and environmental stress.Rhizome: It runs parallel to the ground, and its lower portion, capable of producing adventitious roots, can also generate scaly leaves. They have internodes, buds, and nodes. Examples: Turmeric and ginger. The rootstock in bananas is a rhizome that develops vertically.Bulb: Modified bulbs are visible, and the stem is shortened and ringed with scale leaves. Examples: Tulips, Lilies, Daffodils, Onion, GarlicCorm: A short erect stalk with scaly leaves covers it. When compared to bulbs, it is tough. Examples: Colocasia, Yam, SaffronTuber: The fleshy, food-storing stem terminal is present in this instance. Nodes and internodes are present in the stem; however, they are not identifiable because of swelling. Scaly leaves present at nodes can be interpreted as eyes or scars. Examples: Potato, Artichokes.Many plants have modified stems that serve various purposes, including storage, protection, photosynthesis, support, propagation, and perennial growth.
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Assume N =normal pigment allele;n =Albinism allele (complete absence of brown pigment) if both the parents are heterozygous for albinism ,which allele/s would their gametes have?
The gametes will carry all types of alleles ie, NN, Nn and nn.
Melanin, the pigment that gives skin, hair, and eyes their colors, is affected by albinism. The condition is permanent, yet it does not deteriorate over time. Melanin levels in albinos are either very lower or absent altogether. Their eyesight and coloration may be impacted by this.Albinism follows Recessive autosomal inheritance This means that in order to be born with albinism, a kid must inherit two copies of the allele—one from each parent—from both parents. If both parents have the gene, their child has a 1 in 4 chance of having albinism and a 1 in 2 chance of having the gene.Two heterozygous parents will have gametes Nn and Nn
Nn X Nn (parents)
NN, Nn, Nn, nn (offspring)
Thus, The gametes will carry all types of alleles
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Be aware that this outcome supports Mendel's Law of Independent Assortment. The cross is therefore Cc Vv x Cc Vv. II. A quarter of all offspring for two heterozygous parents (Aa) should exhibit the albinism recessive trait.
When two heterozygotes are crossed, the expected genotype ratio is 1 (homozygous dominant): 2 (heterozygous): 1. (homozygous recessive). When a phenotypic ratio of 2:1 is seen, a deadly allele is presumably present.
There will often be 25% YY, 50% YG, and 25% GG offspring if both parent plants have the heterozygous (YG) genotype. These percentages are calculated using the fact that each of a Punnett square's four offspring boxes contains a percentage of 25%. (1 out of 4). In terms of phenotypes, only 25% of individuals will exhibit G. Every time a new child is born to parents with YG genotypes, these are the odds.
Punnett square demonstrates that the offspring probabilities are 25% YY, 50% YG, and 25% GG when both parents are heterozygous.
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Name three methods of disrupting cells before fractionation
Extraction, homogenization, and centrifugation are the three processes in cell fractionation.
Cell fractionation is a method for dividing cellular components while yet maintaining each component's unique functionality. This technique was initially applied to show where distinct biochemical activities are located within cells. Subcellular fractionation is also used to help with illness detection and to offer an enhanced source of protein for further purification. To prevent osmotic damage, tissue is routinely homogenized in an isotonic buffer solution. Grinding, mincing, chopping, pressure changes, osmotic shock, freeze-thawing, and ultrasonic waves are a few of the mechanisms for homogenization. After that, the samples are maintained cool to avoid enzymatic deterioration. It is the development of a uniform mass of cells (cell homogenate or cell suspension).
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machenical methods(french press... ' ultra sound and bead mill
enzymatic method
chemical method(detergents and solvents)
Explanation: