1). Karen is looking at a slide of an onion root tip under a microscope. She noticed that not all the cells look the same. Which of these best describes why all the cells are not identical?

A). The root is continuing to grow so the cells are going through mitosis

B). Some of the cells are cells and others are cells in the stem

C). There is a problem with the slide and it must be contaminated

D). The cells are turning into the actual

2). What is the difference between cells B and E?

A). B contains fever chromosomes than E

B). B is in anaphase and E is in metaphase

C). B is an animal cell and E is a plant cell

D). B it's two separate cells and E is a single cell

This best illustrates coeveolution because the flower evolved with the bee to get it to be more attracted to it.

First, we have to know the definition of the following vocabulary terms:

Abiotic = non-living

Biotic = living

Then, it's just a matter of seeing which answer choice has both a living organism and a non-living part of the ecosystem.

Correct Answer:

Algae and sunlight

Answer:

C

Explanation:

This layer is called the mantle and is formed of semi-plastic rocks (liquid enough to churn but the rocks are not really melted because of the enormous pressure of the overlying crust above). The layer is heated from below by the core that is hotter, The hotter mantle rises as it gets less dense while the cooler mantle at the upper layers sinks because it is denser. These convections drag with them the continental plates of the crust.  

Convection currents in the Earth's mantle are responsible for the movement of tectonic plates. These currents result from the heating, rising, cooling, and sinking of mantle material. The movements of these plates result in phenomena such as earthquakes and volcanoes.

The convection currents responsible for the movement of tectonic plates occur in the mantle region of the Earth. This is the layer between the crust and the outer core that accounts for about 84% of Earth's volume.

In this region, heat from the Earth's interior causes the material in the mantle to heat up and become less dense, causing it to rise. Once it reaches the top of the mantle and comes close to the Earth's crust, it cools, becomes denser, and sinks back down. This cycle is repeated over and over to create convection currents which provide the force that ultimately causes the movement of the tectonic plates.

These moving plates are responsible for geologic phenomena such as earthquakes, volcanoes, and mountain building. This complexity of plate tectonics is a fundamental concept in geology, highlighting the dynamic nature of our planet.

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Answer:

D

Explanation:

Answer: D) Keep fishing for shrimp, but at a rate that lets the shrimp population start to grow again

Explanation:

D) Keep fishing for shrimp, but at a rate that lets the shrimp population start to grow again is the correct option. As it is given in the situation, that the shrimp population has grown smaller. But at the same time he wants to keep the fishing process continue. To keep in balance over the overall population size of the krill species it will be better that the shrimp population is allowed to grow in number by reproduction of numerous members and fishing practice should stop for sometime.

Enzymes lower the activation energy level of a chemical reaction, thus enabling the reaction to proceed. Hope this helps

An enzyme is a protein catalyst that accelerates biochemical reactions by lowering the activation energy. Enzymes are specific for their substrates and can break them down, build complex molecules, or affect reaction rates.

An enzyme is a type of protein catalyst that helps to accelerate biochemical reactions by lowering the activation energy needed for the reaction to occur. Enzymes are specific for the substrates they act on, and they bind to the substrate at their active site. They can either break down substrates (catabolic enzymes), build more complex molecules (anabolic enzymes), or affect the rate of a reaction (catalytic enzymes).

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B, reservoirs.

Dams are used to conserve water and to convert it into hydroelectric energy.

Aqueducts are used to move water from one source to another, think sort of like irrigation.

Valleys are plains of grass, has nothing to do with water.

Reservoirs however, are used to reserve water, Reserveoirs.

Reservoirs is referred to as the structure which holds water until it is needed and is denoted as option B.

This is usually created using a dam and it is used to store water for future purposes.

This helps to prevent wastage and ensure that the water is easily retrieved when needed.

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I think it is abiotic if it is not i am sorry

Answer:

The correct answer is abiotic factors.

Explanation:

A non-living constituent in the environment is known as an abiotic factor. This can be either a physical presence or chemical. The abiotic factors come in three fundamental categories. These are edaphic, climatic, and social. The edaphic factors comprise conditions of the soil, the climatic factor comprises sunlight, humidity, and other factors taking part in the climate. The social factors comprises the water resources in the region, and how the land is used. The five general abiotic factors are chemical elements, atmosphere, temperature/sunlight, water, and wind.  

Answer:

21. C

22. A

23. B

24. C

Explanation:

21. The structure of cell shape is not maintained by the cell membrane, Rather it is the product of the cytoskeleton which is the filaments and microtubules in the cell. They change the shape of the cell by contracting and relaxing. They also control the internal organization of organelles inside the cell.

22. Psychrophile bacteria thrive in low temperatures which they are adapted to. They can be expected in the polar regions and deep seas. Their metabolism can function in these low temperatures because their cells have antifreeze protein that protects the cells from ice-induced desiccation and damage.

23. Thermophiles are extremophiles that thrive in high temperatures. They can be expected in hydrothermal vents. They have heat-stable proteins and enzymes and DNA (that has high G-C content) that is not easily denatured at high temperatures.

24. This phase is called  the stationary phase. The  reproduction rate is equal to the death rate. This is because the population has reached its carrying capacity. This is why there is no growth in population.

Answer:

(B) Presence of waves

Explanation:

Presence of waves is a factor that will mostly determine where a wave current project can be located.

The eye of a hurricane has the highest wind speeds.

Answer:

A nucleotide.

Explanation:

DNA and RNA are the polymers of nucleotide or a nucleotide may be considered as a single monomer unit of polynucleotides. These are the building blocks of the nucleic acids.

The structure of nucleotide consists of a pentose sugar, nitrogenous bases and a phosphate group attached with the pentose sugar as depicted in the question diagram. Hence, the given molecule is nucleotide.

Thus, the correct answer is option (D).

the correct answer is.

-----> (D.) A nucleotide

Plasma membrane: a microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and regulates the passage of molecules in and out of the cytoplasm.

Cytoplasm: the material or protoplasm within a living cell, excluding the nucleus.

Ribosomes: a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.

DNA: deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.

All cells have four main components, such as the cell membrane, cytoplasm, genetic material, and ribosomes, regardless of whether they are prokaryotic or eukaryotic, as all cells have these components.

All cells have some fundamental structures, such as the genetic material of a cell, which is comprised of DNA, which contains the instructions for the development and function of the organism, and the cytoplasm, composed of water, salts, etc., which is the site of many important cellular processes. While cells have the plasma membrane, which is composed of a lipid bilayer and acts as a selective barrier,

Hence, all  cells have four main components, such as the cell membrane, cytoplasm, genetic material, and ribosomes, regardless of whether they are prokaryotic or eukaryotic, as all cells have these components.

Learn more about the fundamental components of the cells here.

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because fossil fuels take forever to be created hope this helps

There is a limited amount of fossil fuels available.

bone marrow

hope this helps :)

They are called specialized cells

They both have segmented bodies during some stage of their life.

They differ in a number of features and characteristics, but are similar in that;

Answer:

They both have segmented bodies during some stage of their life

Explanation:

i believe the answer is b

An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation. Without mutation, evolution could not occur.

well a mutation in a animals DNA is evidence that it may be trying to adapt to its environment. or the mutation is caused be a disease or excessive amounts of radiation. but either way the mutation can be passed down to the next generation. And the mutation can continue to 'evolve' and create new possibility in what the animal can do.

Hope that this helps. Good luck!

Gravity is the attractive pull between two objects that have mass. The strength of gravity is directly proportional to the amount of mass of each object. ... An object with twice as much mass will exert twice as much gravitational pull on other objects. The gravitational force increases as the size of an object increases

Answer:

Include three of them in your response

Explanation:

Cartilage

Bone

Blood

Fat

Tendons

Three types of connective tissue are:

Tendons: Tendons are tough, fibrous cords that attach muscles to bones. They are made up of a dense network of collagen fibers.

Cartilage: Cartilage is a smooth, flexible tissue that provides support and cushioning for joints. It is made up of a gel-like matrix of chondroitin sulfate and hyaluronic acid.

Bone: Bone is a hard, rigid tissue that forms the skeleton. It is made up of a matrix of collagen fibers and minerals, such as calcium and phosphorus.

Other types of connective tissue include:

Adipose tissue (fat)

Loose connective tissue

Dense connective tissue

Blood

Lymphatic tissue

Connective tissue is the most abundant type of tissue in the body. It plays a vital role in supporting and binding other tissues and organs. It also helps to protect the body from infection and injury.

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B. Translation

D would be chur answer a cloud which is the atmosphere of the comet and can extend for millions of miles.

A comet is a body of rock, ice and dust that gets caught in orbit of the sun. Comet's are usually miles in diameter, and can be recognized by the long "tails" that trail behind them. This tail is made up of gasses and dust that trail miles and miles behind the comet.

Hope this helps!

D. because of their ancestors being able to survie the plague it will be easier for their decendants to be more resistant to similar diseases.

Final answer:

The hypothesis that the survivors of the plague passed on protective genes to their descendants, leading to some resistance to HIV infection, is supported by a blend of biological, environmental, and social factors influencing immune competence.

Explanation:

The most likely hypothesis that explains why about 10% of the modern descendants of those who survived the plague in Europe between 1347 and 1350 have a resistance to infection by HIV is that the individuals who survived the plague passed on genes to their modern descendants who allowed them to be resistant to HIV. There is scientific consensus that exposure to the plague pathogen during medieval times did not generate a long-lasting immunological memory. However, those who had stronger immune systems due to certain genetic traits were more likely to survive and pass these favorable genes onto their offspring. Over generations, this resulted in a population with a higher prevalence of these protective genetic traits, which appears to convey some resistance to HIV. This observation underscores the significance of the interaction between biological, environmental, and social factors in shaping immune competence (IC), which can vary greatly among individuals and populations.

Explanation:

Before a chemical reaction, the elements and compounds which are about to take part in the reaction are known as reactants.

And, when the chemical reaction takes place between the given elements and compounds then they change into products.

For example, we take sodium and chlorine elements and before any chemical reaction they are the reactants.

But when a chemical reaction takes place between sodium and chlorine then it results into the formation of sodium chloride which is the product.

In a chemical reaction, the term used for the elements and compounds present before the reaction takes place is 'reactants'. These undergo a chemical reaction to form the 'products'.

In a chemical reaction, the substances that are present before the reaction takes place are referred to as the reactants. These could be individual elements or compounds that chemically interact with each other. For instance, in the formation of salt (NaCl), sodium (Na) and chloride (Cl) are the reactants. After the reaction has taken place, the substances that are produced are referred to as products.

Furthering the explanation with another example, let's consider water's formation. The reactants in this chemical reaction are hydrogen and oxygen, which are the elements. They react to form water, which is the product and a compound. The chemical equation would be: 2H + O -> H₂O. The arrow indicates the direction of the reaction, from reactants to products. Thus the term used for elements and compounds before a chemical reaction is 'reactants'.

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The correct option is LAW.

In science, a scientific law refers to a statement that predicts a range of natural phenomenon, that is, it is a generalized statement, which explains some set of observations. Before a scientific hypothesis can become a scientific law it must have been tested severally by many scientists and all the scientists must agree that the results remain constant despite continuous testing. As a result of extensive testing, a scientific law is considered to be true for all situations.

Answer: Genetically-engineered genes can be transferred to wild plants in the area.

Explanation: Gene flow between similar species is a common occurrence. It is possible for genetically-engineered genes in a crop plant to transfer to related species of wild plants. This could cause multiple problems. For example, if the genetically-engineered gene makes the plant immune to a weed killer, then wild plants that are considered weeds by the farmer would no longer be controllable with weed killers. it from study island

Answer:  Genetically-engineered genes can be transferred to wild plants in the area.

Explanation:  Gene flow between similar species is a common occurrence. It is possible for genetically-engineered genes in a crop plant to transfer to related species of wild plants. This could cause multiple problems. For example, if the genetically-engineered gene makes the plant immune to a weed killer, then wild plants that are considered weeds by the farmer would no longer be controllable with weed killers.

Proof that I am right look below

Motion energy, or the more common term, mechanical energy is the energy stored in objects.  

The more an object moves faster, the more energy is stored.  Some examples of motion energy include wind, a flowing river, a moving car, or a person running.

Final answer:

Mechanical energy is the energy associated with moving objects or storing energy, such as in kinetic or potential forms. Other forms like chemical, sound, and electrical energy can be transformed into mechanical energy. A car's movement exemplifies kinetic energy, while a compressed spring showcases potential energy.

Explanation:

The question refers to energy that comes from moving objects or stored energy sources. This type of energy is commonly known as mechanical energy, which is the sum of kinetic and potential energy in an object. Kinetic energy is the energy of motion, while potential energy is stored energy that is ready to be converted into other forms. For instance, a moving car has kinetic energy, and a compressed spring has potential energy.

Other forms of energy mentioned include sound energy, which involves the vibrations of matter; chemical energy, associated with the arrangement of atoms in molecules such as in food or fuel; and electrical energy, coming from the movement of electrons. Each of these forms of energy can be converted from one to another, like chemical energy converting to mechanical to power a car, or electrical energy converting to light in a bulb.

Understanding these forms of energy and their conversion is essential. For example, when you use a battery, it releases chemical energy which is then converted into electrical energy to power devices. Similarly, when you speak, your vocal cords vibrate to produce sound energy.

Answer:

Tubercle: allows tendons to attach to bone

Foramen: Allows blood vessels and nerves to travel through bone.

Fossa: Allows to bones to form a joint.

Explanation:

Tubercle is a small round prominence on the bone which helps in the attachment of tendons to the bones.

Foramen means aperture or hole, through which blood vessels and nerves can pass through.  For example: Vertebral foramen. Vertebral foramen of all the vertebral bones together form the vertebral canal. Blood vessels pass through the vertebral foramen. Another example is foramen magnum in the occipital bone.

Fossa is small depression on the surface of bone where articulation can occur. Example: radial fossa- is a depression which articulated with head of radius when the forearm is raised. Olecranon fossa receives olecranon of ulna when forearm is extended.

A, is wrong.

B, is correct.

C, is wrong.

D, is wrong.

You're either looking for Mitosis or Cytokinesis.

Mitosis. The stages that a cell goes through to divide.

Cytokinesis. The final cellular division to form two new cells.

Answer:

first set

Explanation:

because endo means small