Prokaryotic mrna may code for more than one protein and are called polycistronic whereas eukaryotic mrna are ________________.

Answer:

In selective breeding, the individuals have to be from the same species. In GMO the scientists create new combinations of genes. In selective breeding, genes combine on their own. The first GMO was produced in 1973.

Answer:

Can you translate that to english? or french

Explanation:

Answer:

a, c

Explanation:

Eukaryotes share a common ancestry, Genes that contain introns from non-coding regions, Cells containing membrane-bound organelles such as mitochondria.

Mitochondria are cellular organelles present in practically all eukaryotic cells and responsible for the process of cellular respiration. They are found in greater numbers in cells and in cellular regions where there is greater energy expenditure.

Introns  are sections of DNA located in a gene that are removed by RNA splicing during the production of mRNA or other functional RNA.

Whit this information, we can conclude that Eukaryotes share a common ancestry, Genes that contain introns from non-coding regions, Cells containing membrane-bound organelles such as mitochondria.

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Answer:

crops is the best choice here hope this helps

Answer:

a

Explanation:

Answer:

internal structure of a cell

Bacteria

mushroom

Elephant

Coral

They are made up of cells

Marine vascular flowering plants include all of the following options except "Kelps." The correct option is b.

Mangroves: Mangroves are salt-tolerant trees or shrubs that grow in coastal areas. They have adapted to survive in intertidal zones and brackish water. Mangroves play a crucial role in stabilizing shorelines, providing habitats for various organisms, and protecting coastal ecosystems.

Seagrasses: Seagrasses are flowering plants that inhabit shallow coastal waters. They have long, ribbon-like leaves and extensive root systems. Seagrasses form dense underwater meadows that provide essential habitats for many marine organisms, including fish, turtles, and invertebrates.

Cord grass: Cord grass, also known as Spartina, is a type of salt-tolerant grass that grows in marshy areas along coastlines. It is commonly found in estuaries and salt marshes. Cord grasses play a vital role in stabilizing sediments, preventing erosion, and providing habitat for various organisms.

Surf grass: Surf grass, also called Phyllospadix, is a type of marine flowering plant that inhabits rocky coastal areas with strong wave action. It has long, strap-like leaves and forms dense beds in the intertidal zone. Surf grass provides shelter and nursery habitats for many marine species.

The exception mentioned in the question is "Kelps." Kelps are large, brown algae (seaweed) and not true vascular flowering plants. They belong to the group of macroalgae and are known for their rapid growth and forming underwater forests in cold, nutrient-rich waters.

So, marine vascular flowering plants include mangroves, seagrasses, cord grass, and surf grass, but not kelps, which are algae.

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The similarity in early embryonic development among different vertebrate species, such as the presence of tails and gill slits, suggests a common evolutionary ancestry and shared developmental pathways.

The observation that vertebrate embryos exhibit similar features during early development provides evidence for the concept of evolutionary conservation. This similarity is known as embryological homology and indicates that different vertebrate species share a common ancestry and evolutionary history.

During early development, vertebrate embryos go through a stage called the pharyngula stage, where they possess certain characteristics such as tails and gill slits. These features are remnants of ancestral structures that were once functional in the common ancestor of these species. For example, the presence of gill slits in the embryos of different vertebrates reflects their shared aquatic ancestry and indicates a common developmental pathway for the formation of respiratory structures.

The conservation of these developmental features suggests that there are shared genetic and molecular mechanisms that govern embryonic development across vertebrate species.

These shared developmental pathways are controlled by genes and regulatory factors that have been preserved throughout evolution.

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Answer:

Water

Explanation:

In chemical reactions, the atoms in the reactants are rearranged to form the products.

Reactants vs. Products

The reactants in a chemical reaction are the substances that you began with. The products are the result of the reaction.

For example, in the question, you are given hydrogen and oxygen. Then, through a chemical reaction, water is created. The reactants (hydrogen and oxygen) are the compounds that are changing to create the product (water).

Finding the Products

The order that a chemical reaction is written is important. Unlike equations in math, you cannot arbitrarily change the left and right. The left side of a reaction will always contain the reactants, while the right side has the products. Since water is on the right, water is the product.

Answer:

D. Particle A orbits the nucleus, and Particle B is located in the nucleus​

Explanation:

Here since both particles are of the same atom and particle A is much lighter we can infer that Particle A is electron because electrons are much lighter than protons which are Particle B in this case. Thus, particle A orbits nucleus as an electron does and particle B is in nucleus where protons are.

The research study conducted by Kundu and Fulton explores the use of selective cyclooxygenase (COX)-1 or COX-2 inhibitors in controlling metastatic breast cancer in a murine (mouse) model.

COX enzymes play a role in the production of inflammatory mediators, and their inhibition has been studied as a potential therapeutic approach in cancer treatment.

The study investigates the effects of selectively targeting COX-1 or COX-2 in a murine model of breast cancer metastasis.

The findings suggest that these selective inhibitors have the potential to control the progression of metastatic breast cancer, indicating their potential as therapeutic agents in breast cancer management.

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The bare minimum protection needed is Level D protection. When there are no contaminants present or work activities prevent splashes, immersion, or the possibility of sudden inhalation or contact with dangerous amounts of chemicals,

Level D protection may be sufficient. The bare minimal level of defence against dangerous surroundings is Level D. For Level D working circumstances, an air respirator is not required. Overalls, aprons, shoes, gloves, chemical-resistant glasses, face shields, and respirators are examples of PPE. PPE should always be utilised in conjunction with higher level control measures for some high risk tasks, such as spray painting, abrasive blasting, and some emergency response actions.

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Answer:

Recessive

Explanation:

I hope this helps you!

In a scenario where four identical cells are placed in four different liquids then the cells which would take in water and swell  are cells X and Y and is denoted as option C.

This is referred to as the movement of solvent molecules through a semipermeable membrane from a region of lower solute concentration to that of a higher solute concentration.

In a scenario where there is a decrease in the solvent molecules then it will be less salty and have a lower concentration of water which may make it shrink and is referred to as plasmolysis.

In cells in which there is an increase in the solvent molecules then it will be salty and have a higher concentration of water which is responsible for it swelling and is therefore the reason why cells X and Y was chosen as the correct choice.

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The full question is:

A student places four identical cells into four different liquids.

Cell Description of Liquid

The given statement “The temperature in # 3 is fresh water's temperature of maximum density” means that the temperature at point 3 has a density of maximum density compared to other points of fresh water. So, the temperature at point 3 is equal to fresh water's temperature of maximum density. Therefore, the answer is option b. equal to.

Water is known as the only substance on earth that exists in all three forms, i.e., solid, liquid, and gas. Moreover, the density of water is also unique compared to other substances. Density is the property of a substance that measures the relationship between the mass and volume of a substance. The density of water varies with temperature and pressure. So, the density of water is always higher than that of gases but lower than most solids.

The density of fresh water at standard atmospheric pressure is around 1000 kg/m³, whereas seawater has a density of around 1025 kg/m³ at the surface. The density of water at different temperatures: Water has a unique density-temperature relationship, meaning the density of water varies with temperature.

At 4 °C, fresh water has the highest density, and as the temperature rises or falls below this point, the density of water decreases. So, water has an anomalous density-temperature relationship. Hence, b is the correct option.

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To receive government flood insurance, the following must be true:

○ The city must take steps to reduce flood damage.

In the United States, this is managed by the National Flood Insurance Program (NFIP), which is administered by the Federal Emergency Management Agency (FEMA). To be eligible for flood insurance through the NFIP, a community must participate in the program and adopt and enforce floodplain management regulations to reduce the risk of flood damage. These regulations ensure that new development and substantial improvements to existing structures in the community are designed and constructed to minimize flood damage.

The hierarchical arregment of life under organisms are classified is the following:

Biosphere

Ecosystem

Community

Population

Organism

Organ systems

Organs

Tissues

Cells

Organelles

Molecules

Atoms

Answer:

Leaves

Explanation:

Plants grow broad leaves to absorb sunlight. This is extremely helpful because this helps plants make food through photosynthesis. Roots don't absorb sunlight. They absorb water and nutrients from the soil and carry it up through the stems. The stems then transports the nutrients throughout the plant.

The factor that will not reduce the rate of transpiration at 8 am is the increase in the water potential of the soil.

Transpiration is the process of loss of air in the form of water vapor from the living plant tissues which are located above the ground surface of the stomata, cuticle holes, and lenticels. Transpiration is the release of steam H₂O and CO₂, which occurs during the day when it's hot, through the stomata (mouth of the leaf) and lenticel (stem gap).

In transpiration, the higher the intensity of sunlight received by the leaves, the higher the rate of transpiration.

At 8 a.m. the intensity of the sun is not too high, and the air humidity in the atmosphere increases and increases the atmospheric potential of the air. So that the state of the plant will close the stomata and even in the dark the stomata will close.

So, the correct answer to this question is D.

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The industrial use of water for hydraulic fracturing (fracking) can impact the availability and quality of water due to the large volumes of water required and the potential contamination of water sources by chemicals used in the fracking process.

The industrial process of hydraulic fracturing, commonly known as fracking, involves injecting large volumes of water, sand, and chemicals into underground formations to extract natural gas or oil.

This process requires significant amounts of water, which can strain local water supplies, especially in areas already facing water scarcity or drought. The extraction and treatment of this water can also lead to increased water pollution and contamination, as the chemicals used in the fracking fluid can potentially leak into groundwater sources or be released into surface water bodies.

The disposal of wastewater generated from fracking operations can also pose challenges, as it requires proper treatment and management to prevent contamination of water resources.

Overall, the industrial use of water for fracking can have significant implications for both the availability and quality of water in affected regions.

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Answer:

chloroplast

Explanation:

chloroplast helps in the presence ofsunlight to aid photosynthesis

Answer:

Five sets of ethical concerns have been raised about GM crops: potential harm to human health; potential damage to the environment; negative impact on traditional farming practice; excessive corporate dominance; and the 'unnaturalness' of the technology.

Answer:

B. 4.0 Okta

Explanation:

Okta is a measurement of cloud elevation in metrology. NASA used this metric to identify the cloud elevation. The cloud elevation reached to 4.0 okta during the year 2002. High elevation ecosystem is vulnerable. The change in okta does not produces new substance and the elevation of cloud is changed.

High elevations clouds are located at a height of 20,000 feet. They are high above where the temperature is very low and are composed of ice crystals and appears white.

The correct answer is:

Option B. 4.0 Okta

This can be explained as:

Therefore, the value was 4.0 okta in 2002.

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The water molecules on the left would move across the cell membrane to the right.

Osmosis occurs as a result of the concentration gradient of water molecules present across the cell membrane. More solute molecules are present in the solution on the right side of the membrane than in the solution on the left side. In an attempt to balance the concentrations of solute molecules on both sides, water molecules move from the side with the lower solute concentration (left) to the side with the greater solute concentration (right).

Therefore, the correct option is A

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Once a wolf dies in the Greater Yellowstone Ecosystem and the carbon in its body becomes available, a typical carbon atom from the wolf can follow various pathways within the ecosystem.

Here are some potential destinations for the carbon atom:

Decomposition: Decomposers, such as bacteria and fungi, break down the organic matter of the wolf's body. During decomposition, carbon is released into the surrounding soil as organic compounds are broken down.

Soil storage: Some carbon from the wolf's body may be incorporated into the soil. It can be stored as organic matter, contributing to the soil's carbon content.

Consumption by scavengers: Scavengers like vultures, foxes, or other carnivores may feed on the wolf's carcass. In this case, the carbon in the wolf's body is transferred to the consumer's body and becomes part of their biomass.

Gas exchange: As the wolf's body decomposes, carbon dioxide (CO2) is produced through the process of respiration by decomposers. This CO2 can be released into the atmosphere, contributing to the carbon cycle.

Consumption by plants: If the decomposed organic matter, including the carbon from the wolf's body, becomes available as nutrients in the soil, plants in the ecosystem can take up this carbon through their roots and use it for growth and energy.

Transfer through the food chain: If the wolf's body is consumed by other organisms, the carbon can move through the food chain. For example, if a bear consumes the wolf, the carbon from the wolf's body is transferred to the bear. If the bear is later consumed by another predator or scavenger, the carbon is passed on further.

It's important to note that the fate of a specific carbon atom from the wolf's body depends on various factors such as environmental conditions, interactions with other organisms, and ecosystem dynamics. The carbon can be cycled and reused within the ecosystem, contributing to the overall carbon flow and supporting the functioning of the ecosystem.

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