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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 :))))

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.

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 correct answer is option B that is, transmitting electron microscope.  

The core organelles comprise the mitochondria, nucleus, endoplasmic reticulum, and various others. The microscopes play an essential function in understanding organelles.  

Although the majority of the organelles are not clearly observed with the help of light microscopy, and those that can be seen like nucleus are not studied in detail, as their size comes nears to the resolution limit of the light microscope. The complete composition of organelles had only become clear after the discovery of a transmission electron microscope.  

To obtain a detailed view of the nuclear pores, a Scanning Electron Microscope would be the best choice as it provides high-resolution, three-dimensional images of specimen's surface.

The cell biologist should choose the Scanning Electron Microscope (SEM) to observe the surface of a nucleus in detail. This type of microscope allows for high-resolution, three-dimensional images of a specimen's surface topology, which will efficiently allow for a detailed view of nuclear pores. In comparison, a Light Compound Microscope or a Dissecting Microscope cannot provide the resolution at the molecular level needed to observe nuclear pores. A Transmitting Electron Microscope (TEM), on the other hand, would not be optimum for viewing the surface of a specimen but instead provides detailed images of the interior of a specimen.

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The potential energy is 0 because there is no distance form the floor to the ball

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 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.

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.  

The answer is a state of matter.

In physics, a state of matter is one of the distinct forms that matter takes on. Four states of matter are observable in everyday life: solid, liquid, gas, and plasma.

Answer:

C

Explanation:

You're desribing it's flammibility which is a chemical property about it's build up tha'ts letting it catch fire.

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.

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:

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.

Water has a higher heat capacity than air. It takes more energy to cause a temperature change in water than it would in air. Basically, air is prone to heating and cooling quicker than water due to a lower heat capacity.

Air temperature changes faster on land than over the ocean due to the ocean's higher heat capacity and its processes of evaporative cooling and vertical circulation, which help in stabilizing temperatures.

The air temperature changes more quickly on land than over the ocean because the oceans water molecules absorb and release heat more slowly than land. This phenomenon is due to the high heat capacity of water, meaning it requires more energy to change its temperature compared to land. Additionally, evaporative cooling is more prevalent over the ocean, as there is an unlimited water source, compared to land where water is not as abundant. The ocean also distributes heat through vertical circulation currents, mixing surface water with deeper, cooler water, which helps to stabilize the temperature. Moreover, the land's lower heat capacity means it can heat up and cool down more quickly when the same amount of energy is added or removed.

Hot and dry.

Hope this helps!

Answer:

A photo album.

Explanation:

There are 3 types of classification such as artificial classification, natural classification, and phylogenetic classification.  

The artificial system of classification is the ancient type of classification. In this classification organism's external features are given. This structure includes the color of the skin, shape, height, of the organisms. Here plants or animals are grouped based on their morphology. A photo album is an example of artificial classification. In an album, we can see the external morphology of the organisms.

The second type of classification is natural classification. In natural classification, external structure, as well as the internal characters, are mentioned. In this classification, different organisms share their common characters along with their dissimilarities. For example, tiger, cats, and dogs are coming under this classification.  

The dictionary is an example of natural classification. In a dictionary, different words with their meaning and way of their pronunciation are given. In the visual dictionary, the structure of words also given.

The 3rd type of classification is the phylogenetic classification. In this classification, the evolutionary relationships of the organism are given. This is like the cladogram, where one can know the common ancestors of the organisms. The family tree is an example of a phylogenetic classification. By the family tree, we can know the ancestor of the offsprings.

hat is the maximum initial reaction rate for this enzyme at pH 7?

I'm pretty sure its 350.

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)

They all reproduce by spreading seeds, cacti spreads its seeds in the thorns, trees spread seeds by acorns and other things that is just my example. Grass spread thier seeds by the seeds inside of the strand of grass. when the grass gets mowed and blown away or when it dies or also when people re plant they get rid of the dead grass and put in some healthy growing seed.

I hope this helps.

And if this is correct do mind marking me as brainliest.

Grass, trees, and cacti all reproduce by both sexual and asexual reproduction methods. Some grasses and trees produce seeds through the process of sexual reproduction, involving the fusion of male and female gametes. Cacti can also reproduce sexually by producing flowers and seeds, but all three can engage in asexual reproduction methods like vegetative propagation, where new plants grow from parts of the parent plant.

In sexual reproduction, the genetic material from two parents combines to create offspring with genetic variation. This is important for the adaptability and survival of a species. Pollination in plants like grasses and trees is a common way sexual reproduction occurs. On the other hand, asexual reproduction involves a single organism reproducing without the genetic input from another organism, leading to offspring that are genetic clones of the parent. Examples of asexual reproduction include the growth of runners in grasses, cuttings taken from trees, or offsets from cacti. While sexual reproduction allows for genetic diversity, asexual reproduction is often quicker and can be advantageous in stable environments where adaptation to new conditions is not necessary.

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.

Learn more about extensive properties:

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plates rub against each other, huge stresses are set up that can cause portions of the rock to break, resulting in earthquakes. Places where these breaks occur are called faults. A well-known example of a transform plate boundary is the San Andreas Fault in California.

if your answer choices are the same s mine i believe it is  

lithosphere is neither destroyed nor produced

ANSWER:  Janice's observation that is explained by Hypothesis I but not by Hypothesis II is that shortly after the candle was covered by the glass beaker, the flame diminished and soon went out.

REASONING:

Hypothesis I mentions oxygen as an important part of the chemical reaction that causes certain objects to burn.  By placing the glass beaker over the candle, the oxygen supply is cut off.  Once the oxygen inside the beaker is consumed, the flame diminishes and goes out.

Hypothesis II does not mention oxygen as an important part of the chemical reaction.

The right answer is C.

Pepsin (from Greek pepsis, meaning digestion, peptein = digest) is a digestive endoprotease of gastric juice.

Pepsin degrades food bolus proteins by hydrolysing peptide bonds before aromatic amino acids.

The optimum pH of action of pepsin is between 1.8 and 4.4.

It is mostly composed of aspartic acid and glutamic acid.

Answer:

C) Pepsin would probably NOT break down proteins in the test tube because pepsin is designed to work at very acidic pH ranges.

Explanation:

Pepsin is the main proteolytic enzyme active in gastric juice, an aqueous solution rich in hydrochloric acid and enzymes that act on protein digestion. Gastric juice leaves the stomach with very low pH levels, which means that the stomach becomes extremely acidic, an ideal environment for the work of enzymes that work on digestion, including pepsin. Pepsin is produced by the main stomach cells via zymogens and has the function of digesting proteins by catalyzing the hydrolysis of these molecules by breaking down the peptide bonds between some amino acids. The products of this breakdown are relatively long chains of amino acids, oligopeptides such as peptides and proteoses.

As stated earlier, pepsin works at very low pH conditions, ie in very acidic environment, so we can conclude that if pepsin were mixed with some proteins in a test tube, pepsin would probably not break down the proteins. in the test tube because pepsin is designed to work in very acidic pH ranges.

The transition of water from a vaporous state to a liquid state is known as condensation.  

One can observe droplets on the outer surface of the spectacles when he or she moves from a colder region to a warmer region. It is due to the magnitude of the low temperature of the glass, that is, its surrounding becomes cooler than it was before.  

Due to this, the water in the form of water vapor in the air around the outer surface of the glass condensates and settles down and thus converts into the form of a liquid, that is, droplets.  

Answer:

D. Condensation

Explanation:

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