Otis watches a cooking show on making mayonnaise. The chef dissolves salt and sugar in vinegar. She mixes in an egg yolk, and then mixes in oil until the ingredients are completely blended together. The chef says that it’s great on sandwiches and that it can be stored without separating.

Which best describes the purpose of the egg yolk in the recipe?

It allows the oil to change from liquid to a gas in order to form bubbles.
It acts to hold the vinegar and oil together in a colloid.
It helps the vinegar be able to form a solution with the salt and sugar.
It mixes with both the vinegar and oil to form a suspension.

The correct options for each question are:

When DNA is heated, the two strands of DNA will separate but remain intact. This is because high temperatures typically disrupt hydrogen bonds but not covalent bonds. DNA is a double-stranded molecule held together by hydrogen bonds between complementary base pairs. When heated, the energy disrupts the hydrogen bonds between the two strands, causing them to separate. However, the covalent bonds within each strand (i.e. the sugar-phosphate backbone and the bonds between the individual nucleotides) remain intact, allowing the separated strands to come back together when the temperature is lowered.

The uniform width of a DNA molecule is due to the base pairing between pyrimidines and purines. Adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C). These base pairs are complementary to each other, and they are held together by hydrogen bonds. The distance between the two nitrogenous bases in a base pair is always the same, which is why DNA molecules have a uniform width.

The statement that best describes DNA replication in prokaryotic and eukaryotic cells is: Prokaryotic chromosomes have a single origin of replication, whereas each eukaryotic chromosome has many.

In prokaryotic cells, DNA replication begins at a single origin of replication. The replication fork then proceeds in both directions, until the entire chromosome has been replicated. In eukaryotic cells, there are multiple origins of replication, and the replication forks proceed in both directions from each origin. This means that eukaryotic chromosomes are replicated much more quickly than prokaryotic chromosomes.

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Answer:

These cells have a circular DNA molecules

Explanation:

Answer:the answer is d

Explanation:

Answer:

A

Explanation:

When a bacterium is suddenly expelled from a warm human intestine into the cold world outside, it may make several adjustments to maintain the same level of membrane fluidity. One of the primary adjustments would be to increase the amount of unsaturated fatty acids in its cell membrane. Unsaturated fatty acids have kinks in their hydrocarbon chains, which prevents the fatty acids from packing together tightly. This results in a more fluid membrane that is less likely to solidify in colder temperatures.

Another adjustment the bacterium might make is to produce more cholesterol-like molecules in its cell membrane. These molecules are similar to the cholesterol found in animal cell membranes and can help to maintain the proper level of membrane fluidity in colder temperatures.

Additionally, the bacterium may increase the production of heat-shock proteins, which help to stabilize the cell membrane and prevent it from becoming too rigid or too fluid in changing temperatures.

Overall, the bacterium has several strategies to maintain its membrane fluidity in response to changes in temperature. By adjusting the composition of its cell membrane and producing heat-shock proteins, the bacterium can adapt to its environment and continue to function properly.

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Answer:

A scientific law.

Answer:

A. Depleting oxygen needed by organisms

Explanation:

When the algae and bacteria in the algae bloom die, the decomposition process uses up most of the surrounding oxygen.

Electrophoresis is a technique that is used to separate molecules based on their electrical charge and size. In this process, an electric field is applied to a gel or other medium that contains the molecules to be separated. The molecules will then move through the gel towards the positive or negative electrode, depending on their charge.

DNA is a molecule that can be analyzed by electrophoresis. DNA is negatively charged due to the presence of phosphate groups, so it will move towards the positive electrode in an electric field. The size of DNA fragments can also be determined by electrophoresis, as smaller fragments will move more quickly through the gel than larger fragments.

If you have a mixture of DNA molecules that are all the same molecular weight and all linear, they will not be able to be separated by electrophoresis alone. This is because they have the same charge and size, so they will all move through the gel at the same rate. However, other techniques such as size exclusion chromatography or HPLC can be used to separate molecules of the same size but with different chemical properties.

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Answer:

The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.

Explanation:

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Answer:

TCT

Explanation:

C. some bacteria have a gene which makes them resistant to that drug

A. Use an insecticide made of a different chemical

A. Those islands have a similar food type

B. Adaptive radiation in Darwin's finches

B. some members have a beneficial trait which helps them better survive and reproduce in its environment

Generally, Bacteria are common, mostly free-living creatures that often only have one biological cell. They make up a significant portion of the prokaryotic microbial kingdom. Bacteria, which are typically a few micrometers long and were among the earliest living forms to arise on Earth, are found in the majority of its habitats.

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In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.

All of them evolved from one rooted species, which colonized the islands only a few million years ago. This process, whereby species evolve rapidly to exploit empty eco-space, is known as adaptive radiation.

Homologous structures provide proof for a common origin, while analogous structures show that similar selective pressures can produce similar adaptations. Alikenesses and differences among biological molecules can be used to determine species' relatedness.

Thus, adaptive radiation is one of the reasons.

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The process of increasing world connectivity is known as globalisation. It has advantages and disadvantages, just like any process involving economic decisions. China's economy, which is among the fastest-growing in the world, has been negatively impacted by globalisation in many ways.

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Answer:

nuevas tecnologías y desarrollos científicos muchas veces conllevan un potencial para generar daños irreversibles sobre las poblaciones humanas y el medio ambiente

Explanation:

Los avances científicos y tecnológicos conllevan grandes ventajas para la humanidad y simultáneamente también riegos que pueden producir daños irreparables en las sociedades y el medio que las rodea. Por ejemplo, el dominio de la tecnología basada en el uso de la fisión nuclear ha sido beneficioso para obtener grandes cantidades de energía, pero también este desarrollo conlleva la producción de armamento nuclear que pone en riesgo a las sociedades y al medio ambiente. Otro ejemplo puede estar representado por el uso de la tecnología de edición genómica CRISPR-Cas, la cual ha sido recientemente desarrollada. Esta tecnología ha llevado esperanza para el tratamiento de enfermedades genéticas hereditarias a través de la restauración de la función génica. Sin embargo, la técnica CRISPR-Cas de edición genómica ha sido recientemente utilizada para desarrollar bebés editados genéticamente, aún cuando los efectos secundarios que dicha tecnología no han sido completamente resueltos (efectos de edición genómica en regiones genómicas no deseadas), con lo cual llevando un serio riesgo para los bebés que han sido modificados genéticamente. De este modo, cada avance científico tecnológico debe estar apropiadamente regulado por las sociedades a fin de evitar los potenciales efectos dañinos de dichos avances.

Prioritizing plans and systems accomplishes resiliency from organic/inorganic disasters and the role collaboration plays in it in the following ways:Effective planning and systems are essential in making an organization resilient to both organic and inorganic disasters.

It involves developing and implementing risk mitigation strategies that help in preventing or minimizing the adverse effects of the disaster. Prioritizing plans and systems help an organization to understand the nature of the risk that the disaster poses, and prepare the necessary measures to mitigate it.This is done through analyzing the available data, assessing the vulnerabilities of the organization, and developing a comprehensive plan that prioritizes the most critical areas and systems that are essential for the continued operation of the organization.

A priority plan will outline a clear path of action that the organization will follow when a disaster strikes. This includes who is responsible for implementing the plan, the resources needed to execute the plan, and the timeline for executing it.Prioritizing plans and systems helps organizations to build resiliency in the face of disasters. By identifying and prioritizing critical areas and systems, organizations can focus their resources on these areas, thereby making them more robust and resistant to disasters.The role of collaboration in accomplishing resiliency from organic/inorganic disasters is essential.

Collaboration refers to working together with other organizations, communities, and governments to achieve a common goal of mitigating the risk of disasters. Through collaboration, organizations can share resources, expertise, and best practices that help in building resilience.Collaboration also helps in building strong networks that are critical in times of disasters. By collaborating with other organizations, communities, and governments, organizations can access resources and support that can help them to quickly respond to disasters and manage their impacts.

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Answer:

Stalactites refers to the pointed icicle or rock that hangs down from the roof of a cave and that is caused by deposition or pouring water that contains minerals or ice particles. The opposite of stalactites can be found under them and is known as Stalagmites.

Explanation:

Answer:

It’s C, stalactites

Explanation:

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Some desert plants store water in their leaves stems or roots. Others have thick, waxy skin that prevents water loss. Some desert plants have small leaves that help reduce evaporation. Others have deep taproots that help them reach the underground water sources.

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1. The relief between the red arrow and blue arrow is the difference in elevation between the two locations. The elevation is typically measured in meters or feet, and can be seen in the contour lines on the map.

Locations are usually places or areas where something is happening. They can be physical places such as a building, street, park, beach, or mountain, or they can be more abstract such as a particular situation, a concept, or an emotion. Locations are often used in literature, film, and television, to help establish a setting in which the story takes place. Locations can also be used to refer to a person's mental and emotional state, such as feeling lost, scared, or excited. Locations can also refer to a specific point in time, such as a moment in history or a particular period or era.

2. The satellite image showing the landform featured in this map is a false-color image. False-color images are created by combining red, green, and blue bands of light reflected off the ground in a way that makes them appear as a single image. This image allows us to better identify and distinguish the different landforms.

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Answer:

The sun's heat causes differential heating of the earth's surface and water bodies causing changing wind patterns.

Explanation:

The amount of sunlight received varies on various factors like

1. Insolation

2. Latitude

3. Altitude

Maximum sunlight is received at the equator while minimum sunlight is received at the poles.

Because of varying amounts of sunlight received, the surface and water bodies heat differently. This causes the wind over the surface to warm and cool differently.

The warm air being lighter in weight rises and is replaced by the heavier colder air. This leads to the formation of wind patterns.

The global winds are called trade winds.

The Mohs Hardness Scale is the scale used to measure the hardness of a mineral.

2. Sedimentary rocks can form from Erosion and weathering

3. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids

4. When magma (molten rock) cools and crystallizes, igneous rocks are formed. This can happen at volcanoes on Earth's surface or while the melted rock is still inside the crust.

5. Rocks with pyroclastic: ignimbrite, agglomerate, and tuff are all products of the earth's surface accumulation of dust and fragments ejected by violent volcanic eruptions. The minerals that crystallize from a cooling magma are determined by the magma's constituent elements.

6. Magma is molten rock found deep below earths surface.

7. Igneous rocks that form below the Earth's surface are called intrusive igneous rocks (or plutonic).

8. Metamorphic rocks is a rock type alteratered by heat and pressure or this process can turn a sedimentary rock into a igneous rock.

9. Calcite are often found in sedimentary rocks.

10. Sedimentary rocks is a rock formed from wheathered remains of preexisting rocks.

11.  foliation occurs when metamorphic rocks form layers.

12. A mineral is a naturally occurring chemical compound

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Answer:algae

Explanation:because algae is able to live any where water is at

Answer:

It is possible for two black holes to collide. Once they come so close that they cannot escape each other's gravity, they will merge to become one bigger black hole. Such an event would be extremely violent. ... These ripples are called gravitational waves.

Answer:

yes

Explanation:

Plants convert energy from sunlight into sugar in a process called photosynthesis. Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen

Answer:

so it spins the hydrogen molecules to make the ATP

Explanation:

it occurs in the inner membrane of the mitochondria. The electrons drop off the energy and the hydrogen atoms are moving through the Protein channels/pumps. after that the NADH turns into nad+ and the fadh2 turns into fad. these then go back to the citric acid cycle to get the electrons back. (known as electron carriers) the hydrogen molecules get pumped up to the inner membrane space which would be active transport since we are going from low to high concentrations. the hydrogen molecules go down the atp synthase which spins to make the atp. this would be passive transport since its moving from high to low concentrations.

Answer:

Types of tissues:-

Nervous tissue, Epithelial tissue, Muscle tissue, and Connective tissue.

Explanation:

Nervous tissue is made up of nerve cells (neurons) and is used to carry "messages" to and from various parts of the body.

Examples are cells, neurons and glial cells.

Muscle tissue includes striated (also called voluntary) muscles that move the skeleton, and smooth muscle, such as the muscles that surround the stomach.

Examples are blood vessels, biceps and intestines.

Epithelial tissue provides a covering (skin, the linings of the various passages inside the body). 

An example is the epidermis, the outermost layer of the skin and outerlayers on internal organs.

Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues).

Examples include adipose, cartilage, bone, blood, and lymph.