During cell division, or mitosis, an exact duplicate of the original cell is produced. The instructions for cell division are found in the __________ in the __________. A) nucleus:RNA B) chromosomes:nucleus C) nucleus:nucleolus D) ribosomes:RNA Submit Hint Calc From Molecules to Organisms: Structures and Processes (HS-LS1-4) Mitosis ID: 27320

The secondary structure begins the folding up process where as in the tertiary structure, the protein is folded into its accurate 3D structure, associating to the purpose. This is tied together by a series of non-covalent communications between side groups, including ionic communications, disulphide bonds, hydrophobic interactions, Van der Waals energies and hydrogen bonds.

The 4 factors affect evolution, according to Darwin’s Origin of Species are;

Variation

Heritability

Competition

Differential survival

Variation ensures that there is variability of population traits on which selection pressures will apply.

Heritability means that the traits must be able to be passed down to offsprings through gametes.

Competition occurs when the individuals in the population compete for limited resources

Differential survival occurs due to competition for resources and other selection pressures. This result to the survival of the strongest and weeding out of the weak from the population.

The basic needs for animals are food, water, oxygen, space, and shelter.

Basic needs refers to those things which must be present for an organism to survive.

If the basic needs of an organism are not provided, the organism will die.

The basic needs of an organism include, water, good and shelter.

Therefore, the basic needs for animals are food, water, oxygen, space, and shelter.

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Answer:

The correct answer would be-  Using random people to code the data of samples for scientific research or experiment.

Explanation:

Scientific bias is a scientific error that is taking place from unfair sampling or influence the research to portray a certain result or can occur due to an unfair estimation process that will affect the result of the research in a certain way according to the influence.

Scientific bias can be avoided by different methods to try to regulate to avoid bias with qualitative data analysis and one effective technique is -

- Using random people or researchers to code the data of samples for scientific research or experiment.

Answer: The correct answer is D. Heating by the sun.

Comets are balls composed of dust and ice orbiting around the Sun in elliptical orbits. The orbit of the comet takes it near and far away from the sun. As the comets get closer to the Sun, the heat of the sun vaporizes the materials on the surface of the comet which forms a tail pointing away from the sun.

A comet tail is visible from Earth when they are illuminated by the Sun on approaching the inner Solar System. The solar radiations vaporize the volatile materials of the comet which streams out from the nucleus and carries dust away with it. The pressure due to the Sun’s radiation and solar winds leads to the formation of a tail pointing away from the Sun.

Water would stop soaking into the ground in the saturated zone from the previous rainfall cannot be re-absorbed. The rainfall become surface runoff.

Surface runoff is nothing more than the normal water running off on the land surface. It it similar to the water which we use for the purpose of washing the car with runs off down the driveway as we work, the rain which nature covers the landscape with runs off the downhill, too due to the gravitational force. Runoff is an important component of the natural water cycle of the ecosystem.

Surface runoff is the water, from the rain, snowmelt, or other sources, which flows over the land surface, and it is a major component of the water cycle in the ecosystem.

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Answer:

It's B

Explanation:

Fossil fuels formed from the remains of living things or organic matter. When tremendous pressure and heat are applied to organic matter for long periods of time, the organic matter turns into fossil fuels causes the pressure that turns organic matter into fossil fuels.

Final answer:

The correct option is (b) gases released during combustion can form acid rain. Burning fossil fuels releases gases that can lead to the formation of acid rain, representing one of the disadvantages of using fossil fuels as an energy resource.

Explanation:

One of the disadvantages of using fossil fuels as an energy resource is that gases released during combustion can form acid rain. Fossil fuels, which include coal, oil, and natural gas, are nonrenewable sources of energy that were formed from the remains of plants and animals that lived millions of years ago. When these fuels are burned, they release carbon dioxide and other pollutants into the atmosphere. These emissions contribute to environmental issues such as global warming, smog, and acid rain, which are caused by the release of sulfur dioxide and nitrogen oxides during the combustion process. Accidents during fossil fuel extraction and transportation can also lead to devastating environmental consequences, such as oil spills.

Answer : The correct answer is -

1) A. allopatric speciation.

2)B. behaviorally isolated.

Allopatric speciation can be described as formation of new species when a biological population belonging to one species becomes geographically isolated and no gene flow occurs between the two during the course of evolution.

As per the given information in the question, a group of salamander population moved to east and another to west, which later evolved into two different population as they were unable to mate.

Thue, it represents allopatric speciation.

As the salamanders developed different reproductive behaviors, therefore it indicates behavior isolation, suggesting that they will perform different mating rituals.

Answer:

C) the evolution of cells with nuclei and organelles

Explanation:

Sponges are eukaryotes and have well define membrane bound nucleus and organelles in their cells. They lack tissues and hence, do not need organization of cells into groups. Evolution of sponges would require origin of eukaryotic cells from the ancestral cells. Being animals, they lack cell wall around their cells.

The evolution of cells with nuclei and organelles was a fundamental development that facilitated the evolution of basic multicellular organisms such as sponges.

In order for sponges or Porifera, which are the simplest multicellular animals on Earth, to have evolved, there must have been an important foundational development. That development was C) the evolution of cells with nuclei and organelles. This cellular evolution marked a significant transition from unicellular organisms to multicellular organisms. Basic cells with no nuclei or organelles, namely prokaryotic cells, evolved into more complex cells with nuclei and organelles, termed eukaryotic cells. Fundamental multicellular life forms such as sponges could have thereafter originated based on the additional complexity offered by these eukaryotic cells.

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Long toes can be inherited from parents to offspring in organisms, considers a heritable trait, hence option A is correct.

A heritable trait is a kind of offspring trait that matches the parents' related trait more than it fits the same trait in a random individual in the population.

It is a measurement of how well differences in people's genes describe differences in their traits. Sense of humor is not a heritable trait, it is a psychological condition that is different in parents and offspring.

A gene is key to the transmission of traits from parents to offspring, it is a DNA sequence that is expressed in the form of protein.

Therefore, the long toe is a character which can be inherited from parents, hence option A is correct.

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Food substances contain chemical energy which is found between the molecular bonds of the food substance. When food is cooked the chemical energy is converted to another form of chemical energy by the separation of the different classes of food stored in the food as chemical energy.

The food ( carbohydrates ) when digested will be converted to glucose or fat molecules, which is required by the human body for proper functioning/energy.

Hence we can conclude that the type of energy associated with food is ; chemical energy, the energy is stored as  Molecular bonds and the chemical energy in the food when cooked is converted to nutrients needed by the body ( e.g.  glucose )

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Seismic waves are vibrations that travel through the Earth's interior or along its surface. They are directly related to earthquakes and provide valuable information about their characteristics. P-waves, S-waves, and surface waves are the main types of seismic waves.

Seismic waves are vibrations that travel through the Earth's interior or along its surface. There are three main types of seismic waves: P-waves, S-waves, and surface waves. P-waves are primary or compressional waves that involve oscillations in the same direction as the wave is traveling. S-waves are secondary or shear waves that involve oscillations perpendicular to the direction of motion. Surface waves travel along the Earth's surface and cause the most damage during an earthquake.

Seismic waves are directly related to earthquakes. When an earthquake occurs, it releases energy in the form of seismic waves that radiate outwards from the earthquake's focus. These waves cause the ground to shake and can be detected by seismographs. By studying seismic waves, scientists can determine the location, depth, and magnitude of an earthquake, as well as its potential impact.

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The wind blows particles of molds and plant pollen; forest fires, soil erosion, and dust storms add particles of smoke and dust; erupting volcanoes spew out clouds of dust, ash, and poisonous gases.

The statement is true about the cell theory is It is based on experimentation. So, option C is correct.

The cell theory suggest that all cells come from other cell. The other cell refers to the pre-existing cell.

Robert Hooke was the one who discovered many fact about cells. He studied the cells scientifically which we call cell biology.

So, option C is correct.

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Clouds often form around 3pm and 6am because of specific atmospheric conditions. In the afternoon, the Sun's heat causes warm moist air to rise and cool, forming cumulus clouds. Around dawn, surface temperatures drop, creating a favorable environment for the humidity to condense into clouds.

The phenomena of clouds often forming around 3pm or 6am primarily relate to atmospheric conditions particularly those involving temperature and convection processes.

In the afternoon, around 3pm, the sun has been heating the Earth's surface for most of the day. This heating process causes the air near the surface to warm up and rise, a process called convection. As this warm, moist air rises, it cools and can condense to form cumulus clouds, often appearing around the middle of the afternoon.

Similarly, around 6am, atmospheric conditions become favorable for cloud formation. The temperature near the Earth's surface becomes cooler than the air above. This causes the humidity to rise and condenses into clouds facilitated by the cooler, moist environment, which is why you often observe clouds in the early morning.

Another factor that contributes to these timings is the Earth's atmosphere's refractive properties, which can bend light around the planet. This bending can lead to the phenomenon of twilight illumination before sunrise and after sunset. Despite the sun not being in the horizon, its sunlight can still reach and heat the Earth's surface, possibly impacting cloud formation times.

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Answer:

Correct. Wetlands create a nursery for many types of fish, and also improve water quality by removing nitrogen phosphorus and pesticides from agricultural runoff.

Answer:

A synthetic gene is created.

Explanation:

I just took the test and this was the correct answer.