Calcium (Ca) has an atomic number of 20. What is calcium's ground-state electron configuration?

1s21p61d101f2
1s21p62s22p63s23p2
1s22s22p63s23p64s2
1s22s22p63s23p63d2

Answer:

soooooo whats the answer??

Explanation:

Genes are located on chromosomes which are found in the nucleus of cells  is relationship exists between genes and chromosomes. The correct option is A.  

Thus, Chromatin is the material that makes up chromosomes. The condensed DNA strands that make up chromosomes are known as chromatin.

The sections of DNA that code for proteins are known as genes. As a result, each chromosome is formed of DNA and has numerous genes because of DNA segments.

Chromosomes are where genes are found. Chromosomes are essentially collections of DNA. The cell 'wraps up' the lengthy DNA strands and compresses them into chromosomes in order to keep everything ordered.

Thus, Genes are located on chromosomes which are found in the nucleus of cells  is relationship exists between genes and chromosomes. The correct option is A.  

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Diffusion is an example of passive transport of materials through the cell membrane. Therefore option D is correct.

Passive transport is the movement of substances across the cell membrane without the use of energy. It occurs along the concentration gradient, which means that substances move from an area of higher concentration to an area of lower concentration.

Diffusion is a type of passive transport where molecules or ions move from an area of higher concentration to an area of lower concentration until equilibrium is reached. This process occurs spontaneously and does not require the cell to expend energy.

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Scientific method is an empirical method of knowledge acquisition, involving careful observation, formulating hypotheses based on such observations, testing deductions drawn from the hypotheses, and refinement or rejection of hypotheses based on the results of the tests.ext we have to know what “theory of evolution” we’re talking about. Let’s begin with the theory proposed by Charles Darwin in the Origin of Species.

I don’t know what “No assumptions here” in the question details is supposed to mean. Making hypotheses is part of the scientific method. Maybe it means that a hypothesis is assumed subject to verification, while an assumption is an axiom not subject to test. The scientific method makes testable hypotheses but never makes firm assumptions.

Darwin made a lot of observations. Then he made two hypotheses:

The observed variation among individuals can accumulate to produce all the differences we observe among species.

The effect of these variations on the ability of a living entity to survive and reproduce preserves some variations and eliminates others.

The heritability of variations was essential to the theory, but it was an observed fact, not an assumption or a hypothesis.

C. I think because then you don't need so much paper waste. It cuts down on so much wasted paper

Answer:

C. Eletronic storage of files

Explanation:

The pigs on the farm generate a lot of waste like manure and excrement residues left on the ground by these animals.

Nuclear power still produces radioactive waste (liquid, solid, gas and biological waste).

Replacing paper with electronic files, in turn, drastically reduces the amount of waste, as no large physical space or bulky material disposal will be required, as with paper files.

Disposable milk cartons can facilitate recycling processes, but do not necessarily reduce the amount of waste from these materials.

Given these statements, it can be concluded that the correct alternative, which shows a greater reduction in waste is C.

Yes, I would think of formulating this treatment to slow down the cell growth.

In a cancer patient, the cell cycle is disturbed because it undergoes division very rapidly, leading to the production of unwanted and uncontrolled growth of cells. For the treatment, it would be a better option for the researcher to formulate a anti-cancer agent that slows the cell cycle. Because if the growth of the cell is slowed, the tumour (unwanted and uncontrolled cell growth) will regress and thus more chances of recovery of the patient will be there.

I think would be C im pretty sure

is B because he growth rate of a population that has a limited food supply will most likely be logistic. A limited food supply is not natural. Exponential growth rate would require unlimited resources. A random growth rate would occur with changing food supplies.

There is an important difference because the solar energy is provided by the sun and matter doesn't decrease from Earth no matter what. The solar energy input provides plants with energy to grow and for animals to not die of the cold. Plants are food for omnivores and herbivores and thus supporting the earth's ecosystem.

Answer:sleep

Explanation:u need it

It is a molecule that contains a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

A macromolecule is a very large molecule, such as protein, commonly created by polymerization of smaller subunits (monomers). They are typically composed of thousands or more atoms. The most common macromolecules in biochemistry are biopolymers (nucleic acids, proteins, carbohydrates and polyphenols) and large non-polymeric molecules (such as lipids and macrocycles). hoped it helped.

The correct answer is: Intentional practice of the new skill or information.

Neuroplasticity can be defined as rewiring the brain by forming the new connections and weakening the old ones. It is the ability of the brain to change through time and it might include a change of the proportion of grey matter or strengths of synapses over time.

According to the neuroplasticity video, we can rewire our brains by the intentional practice of the new skill or information.

Firstly, we should understand the plasticity of our brain and keep in mind fire and wire together. Allow MIT scientists to rewire our sensitive memory cooperation. Stay away from every kind of stress. We should regularly make brain challenges.  

Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time.

The correct answer is Landfill.

This landfill is located at the New York(NY) covering 2200 acres of land being the largest landfill of nation.

This landfill is called by this name because it is located at t the Fresh Kills estuary' bank, located at the western Staten Island.

In the year 1948 the Fresh kills landfill was used as the temporary or short term landfill but it changed into the largest landfill by 1955 and remained the same until 2001, when it was closed.

glycolysis that is the first step in cellular respiration

The process of respiration that happens first in the cells of the body is called glycolysis.

Glycolysis is the first step in cellular respiration, which is the process by which cells produce energy. Glycolysis occurs in the cytoplasm of the cell, and it does not require oxygen.

In glycolysis, glucose is broken down into two molecules of pyruvate. This process releases a small amount of energy, which is used to synthesize ATP, a molecule that stores energy. Glycolysis also produces two molecules of NADH, which are used in later steps of cellular respiration to produce more ATP.

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Water helps in survive without water we will die..

Answer:

Water is important for us because every living thing depends on water to survive. Every cell in our body is between 75% and 90% water, our bodies themselves are around 70% water. If we didn't have water there would be absolutely no way there could be life on Earth. Everything needs water including us, plants, animals, and any living thing.

Hopefully this helps! :)

The phenomenon of small water droplets remaining stuck to the glass despite emptying can be accounted for by the properties of cohesion and adhesion in water. Cohesion makes water molecules stick together forming droplets, whereas adhesion makes these droplets stick to the glass walls.

The student's observation of small droplets of water remaining stuck to the glass can be explained by two properties of water: Cohesion and Adhesion. Cohesion is the property of water that makes its molecules attracted to each other, causing them to stick together and form droplets. Adhesion is the property that allows water molecules to be attracted to other substances, in this case, the glass, allowing it to stick to the glass walls.

For example, when the student empties the glass, the cohesion property makes water molecules stick together, thus forming small droplets. Meanwhile, the adhesion property causes these droplets to stick to the glass. Together, these two properties explain why droplets of water remain in the glass after it has been emptied.

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Answer:

B- They Separate the Sister Chromatids

Explanation:

During cell division, microtubules form the spindle forms at the equator of a dividing cell. Thereon, duplicated chromosomes (sister chromatids which are not yet apart) are arranged on the equator plate. The spindle fibers then pull apart each and allow the movement of separated chromatids towards each pole. This process takes place both in mitosis and meiosis.

Answer:

they pull the cell membrane in

Explanation:

guys driving drills into the ground  to get oil

The focus of an earthquake, or hypocenter, is the place within the Earth where an earthquake originates, marked by the rupture of rocks. The epicenter is the surface point directly above the focus. The depth of the focus influences the intensity of shaking felt during an earthquake.

The focus of an earthquake, also known as the hypocenter, is the precise underground point where the rupture of rocks begins, leading to an earthquake. It marks the exact location within the Earth's crust where the strain energy that has been accumulating in the rocks due to tectonic forces is suddenly released. This release of energy occurs when the stress on the rocks surpasses their internal strength, triggering a fracture and resulting in a displacement along a fault line. The energy then propagates in the form of seismic waves, which cause the shaking that we feel on the Earth's surface.

The epicenter is the point on the Earth's surface directly above the focus and is often the referenced location when reporting on earthquakes because it is the center of the affected area. The depth of focus plays a crucial role in determining the amount of shaking experienced at the surface; deeper earthquakes generally cause less damage because the seismic waves lose much of their energy before reaching the surface.

The purpose of scientific modeling varies. Some models, such as the three-dimensional double-helix model of DNA, are used primarily to visualize an object or system, often being created from experimental data. Other models are intended to describe an abstract or hypothetical behaviour or phenomenon.

A chemical change is when 2 substances combine to form a new substance. An example of this could be: sodium+chlorine=sodium chloride, or table salt.

A physical change is when the appearance or form of a substance is affected, but it’s chemical substances have not been changed. An example of this would be: chopping a log in half.

The Law of Conservation of Mass is the rule which states that mass cannot be created or destroyed. An example of this would be: it is impossible to make a glass of water appear into my hand out of thin air, the same with it disappearing into thin air.

(I loved 6th grade chemistry class. It was my favorite)

That maybe raccoons and red pandas are more related.

It is known that red pandas and giant pandas are an example of convergent evolution. This means that even though they don’t have common ancestor, they have similar adaptations. It is because both pandas live in similar ecological niches, do and eat similar things (e.g. bamboo diet), they’re faced with the same challenges and thus, evolve similar adaptations.

Answer:

It tell the. They aren’t related

Explanation:

Hot and dry.

Hope this helps!

Your answers are the Cambrian, Permian, Silurian time periods.

The correct answer is A, D, E.

A. Cambrian.

D. Permian.

E. Silurian.

Triassic period was termed as the period for the mesozoic era. This time period followed  extinction of great mass which founded at the end of period of permian.

It is during the period of triassic when first mammal and dinosaur appeared.

During late permian, plants like horsetails and mosses were extinct.

Those plants which evolved in on the of triassic were cydophytes and confers.

This is the correct sequence of steps in the development of heart failure.

1. Fat deposits build up along artery walls

2.Blockage in artery obstruct blood flow and can cause heart attacks

3.Blood pressure increases and cardiac muscles thicken

4.Heart pumps blood less efficiently

5.Oxygen delivery is reduced and heart failure occurs

Answer:

The correct order is shown in the attachment below.

Heart attack or myocardial infarction is a medical situation which occurs when there is a decrease in the flow of blood towards the heart.

It usually starts with the deposition of substances like fats, cholesterol, et cetera which leads to the formation of plaque in the artery (especially those which feed coronary arteries).

The plaque or blockage reduces the flow of blood towards the heart.

As a result, the heart starting contracting more vigorously which increases the blood pressure and thickens the cardiac muscles.

With time, the efficiency of the heart decreases due to which less oxygen is reached to the heart and ultimately, a person experiences a heart attack.

Pulmonary Artery: Carries deoxygenated blood from heart to lungs

Pulmonary Veins: Carries oxygenated blood from lungs to heart

Inferior Vena Cava: Carries deoxygenated blood from inferior body to heart

Coronary Arteries: Carries oxygenated blood to heart tissues

Answer:

Pulmonary artery conducts deoxygenated blood from the heart to the lungs.  

Aorta mediates oxygen-enriched blood away from the heart.  

Inferior vena cava conducts deoxygenated blood from the lower body to the heart.  

Coronary artery branches from the aorta and offers oxygen to the muscles of the heart.  

Explanation:

Pulmonary artery transports deoxygenated blood from the heart, it is also the specific artery found in the circulation system, which transports deoxygenated blood. When the blood goes inside the lungs it picks up oxygen and goes back to the heart with the help of a pulmonary vein.  

The aorta refers to the biggest artery found in the human body. When the blood is pumped upwards through the left ventricle, then it goes via the aorta and then gets distributed to the other body parts.  

The inferior vena cava transports deoxygenated blood from the lower limbs of the body, on the other hand, the superior vena cava transports blood from the upper limbs and head of the body.  

The heart gets its blood supply through the coronary artery. There are two prime coronary arteries, the right and the left coronary artery that gets separated even further into small arteries.  

The genetic base of the shape of orchid is very complex.

Mendelian traits are described as simple traits determined by one gene. The different alleles of the gene contribute to the difference in the trait. This is true for some traits in plants, animals including humans and other organisms, but not for the shape of orchids.

The shape of orchid flowers is determined by the ABCDE group of genes that are responsible for the body plan in plants. These genes are the equivalent of HOX genes of animals.

The protein products of different genes of the ABCDE group interact with each other in complex ways creating different shapes of orchids.

The plato answer is:

It is not purely Mendelian, because it doesn’t appear to be one gene that affects the shape of the orchids. There seem to be many genes involved, with variations in the outcome.

I hope this helps :))))

A extensive property is a physical property that is not dependent on sample size. The correct option is C.

An extensive property of a substance is a physical property that depends on the amount or size of the substance being measured. Extensive properties change when you change the amount or size of the substance. Examples of extensive properties include mass, volume, and total energy. These properties are directly related to the quantity of the substance and are not independent of sample size.

In contrast, intensive properties are physical properties that are independent of the amount or size of the substance and remain constant regardless of the quantity. Examples of intensive properties include temperature, density, and specific heat capacity. These properties do not change when the sample size or amount of the substance is altered.

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Salt makes your body hold on to water. If you eat too much salt, the extra water stored in your body raises your blood pressure. So, the more salt you eat, the higher your blood pressure.

Salt affects kidney delicate balance of fluid and increases blood pressure.

Kidneys exclude the unwanted fluid from the body by filtering the blood. The sodium and potassium ions play their role to get extra water from the blood to urine collecting channels which then lead this water or fluid to the urinary bladder. So, eating the more salt increase these ions which wreck the delicate balance of filtration.

The more salts in the body also result in a higher blood pressure because of holding more water in the blood than the kidney filtrate channels.