Betty drew the lifecycle of a butterfly for A science exhibition. The lifecycle showed the various stages of growth before the egg turns into a butterfly. What type of model did Betty use?
Was it hypothetical, conceptual, mathematical, or physical

The dilution of 1 mL stock in 99 mL of water is a 100-fold dilution. Option C.

A 100-fold dilution is a dilution involving 1 part of the stock solution and 99 parts of diluting solvent.

A stock solution is a standard solution from which solutions of lower concentrations can be prepared by dilution.

Thus, when you take 1 mL of a stock solution and dilute it with 99 mL of water, you are carrying out a 100-fold dilution with water being the solvent used in dilution.

A 100-fold dilution is different from a 1000-fold. The latter requires 1 part of the stock solution in 999 parts of diluting solvent.

For 10-fold dilution, 1 part of the stock is taken and diluted with 99 parts of the diluting solvent.

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Answer:

The correct option is gene 1 with the dN/dS ratio of 0.01

Explanation:

In order for negative selection to occur, the dN/dS ratio has to be between 0 and 1. There three genes that lie within this range, and hence, we can choose the smallest one to provide the strongest evidence among those to represented as the one being negatively selected. Where the dN/dS ratio is equal to 1, it means neutral and where the dN/dS ratio is greater than 1, it means positive selection.

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The correct answer is B.

In the second stanza, the speaker calls "Mines of gold" to the colors of the flowers.

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The World Health Organization (WHO) note that essential nutrients are crucial in supporting a person’s reproduction, good health, and growth. The WHO divide these essential nutrients into two categories: micronutrients and macronutrients.

Micronutrients are nutrients that a person needs in small doses. Micronutrients consist of vitamins and minerals. Although the body only needs small amounts of them, a deficiency can cause ill health.

Macronutrients are nutrients that a person needs in larger amounts. Macronutrients include water, protein, carbohydrates, and fats.

Keep reading for more information about where to find these nutrients, and why a person needs them.

The six essential nutrients are vitamins, minerals, protein, fats, water, and carbohydrate

Answer:

On one end of the tRNA, an appropriate amino acid is attached to its 3' hydroxyl group based on the anticodon and the ribosome catalyzes the formation of a peptide bond between this amino acid and the elongating polypeptide chain.

Explanation:

A three nucleotide acceptor site with a free -OH group extends from the 3' side of the tRNA molecule, exact reverse the anticodon. Through its acceptor stem, a specific tRNA binds to a particular amino acid.

Ribonucleic acid is a polymeric molecule that plays important roles in gene coding, decoding, regulation, and expression. Nucleic acids include RNA and deoxyribonucleic acid.

To make proteins, RNA directly codes for amino acids and acts as a messenger between DNA and ribosomes.

In protein synthesis, three types of RNA are involved. They are ribosomal RNA, messenger RNA (mRNA), and transfer RNA (tRNA) (rRNA). Ribosomes are obligated for protein biosynthesis and are formed by rRNA.

The cognate aminoacyl-tRNA synthetase esterifies the cognate amino acid on its 3'-OH.

The synthetase recognizes structural features on tRNA, allowing it to distinguish between tRNA specific for a given amino acid and all other (non-cognate) tRNA.

Thus, these are the functions of 3'OH end of tRNA.

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Answer: Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.

Explanation: Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Answer:

Warm fronts and high pressure systems

Explanation:

Answer:

Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.

Explanation:

Answer: Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.

Explanation:

As we know the pollen grain germinates once has reached the female cone, extending a pollinic tube that grows until reaches the entrance to the gametophyte, there the nuclei travel into the oosphere and fertilization occurs, after that the new embryo will start to divide, and grow.

Given the high demand from its factories, it would be preferable to let the corporation raise the price of its product up until the point at which supply and demand are equal and an equilibrium is reached.

From that option of situation, the nursery will no longer think of some unnecessary actions that could possibly lead into headache. In economics, the relationship between the quantity of a good or service that producers want to sell at different prices and the quantity that consumers want to buy is known as supply and demand.

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Answer:

False, prokaryotic cell is smaller and less complex, a eukaryotic cell makes their own power plant called mitochondria

Answer:

Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.

Answer:

grass → grasshopper → lizard → snake

Explanation:

The order of energy transfer is from the producer (plants) to the primary consumer (grasshopper), to the secondary consumer (lizard) and finally to the tertiary consumer (snake)

Just as she answered.

Answer:

Molecules move up the concentration gradient in facilitated diffusion, which requires ATP to be used as molecules naturally move from high to low concentration

Explanation:

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Molecules move down their concentration gradient in facilitated diffusion through channels of proteins.

For most molecules, movement through the membrane, with a significant rate, is only possible by the presence of transporter proteins (integral membrane proteins, which recognize substances with a high specificity, accelerating their translocation) or channels of proteins.

Transport proteins allow the facilitated diffusion of molecules, moving them along the free energy gradient (concentration gradient, charge gradient, or both), in the direction of thermodynamic equilibrium.

When a carrier protein binds to a solute, the protein changes shape in such a way that it carries the solute to the other side of the membrane.

Facilitated diffusion is similar to simple diffusion, since the molecules move from a region of higher to a lower concentration of solutes.

For example, by facilitated diffusion, chlorine ions move down their concentration gradient into the cell through chlorine channels.

Therefore, we can conclude that many molecules are assisted by transporter proteins for their diffusion through the plasma membrane, a process known as facilitated diffusion, where the molecules descend through their concentration gradient.

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Gibberellic acid (GA) plays a crucial role in a-amylase production and germination. GA stimulates the synthesis and release of a-amylase enzymes, which hydrolyze starch into sugars during germination. Experimental studies have demonstrated that the application of GA accelerates a-amylase production and enhances germination in various plant species

In terms of a-amylase production, GA stimulates the synthesis and release of this enzyme. a-amylase is responsible for breaking down starch into simpler sugars, which are then utilized by the plant for growth and development.

Studies have shown that applying GA to plant tissues or seeds results in an increased production of a-amylase, facilitating the conversion of stored starch into energy-rich sugars.

Regarding germination, GA is involved in breaking seed dormancy and promoting the growth of the embryonic plant.

It stimulates the production of hydrolytic enzymes like a-amylase, which enable the hydrolysis of starch reserves in the endosperm, providing the energy needed for germination and seedling establishment.

Additionally, GA helps in cell elongation and division, promoting the growth of the embryo and the emergence of the radicle.

Evidence for GA's role in both processes includes studies where the exogenous application of GA to seeds or plant tissues has been shown to enhance a-amylase production and promote germination.

Conversely, inhibiting GA synthesis or action results in reduced a-amylase activity and impaired germination. These findings support the critical involvement of GA in both a-amylase production and germination processes in plants.

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Answer:

A dichotomous key is an important scientific tool, used to identify different organisms, based the organism's observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.

Explanation:

Answer:

B. His libraries housed numerous scrolls written by anatomists.

Explanation:

Alexander the Great's major contribution to medical science was the establishment of the Library of Alexandria in Egypt, which housed numerous scrolls written by prominent anatomists, physicians, and scholars of the time. The library helped to preserve and disseminate medical knowledge, providing a foundation for future advancements in the field.

A variable is a factor that can be manipulated in an experiment. It is an aspect that affect the outcome of an experiment.  

Thus, in scientific research, variables are controlled or measured to determine their effect on the dependent variable. In this case, Vusi is investigating the heat conductivity of different metals in an experiment, where the metal itself is an independent variable.

Variables are important in experiments because by manipulating and controlling variables, researchers can draw conclusions about the behavior of the system under investigation. In the experiment of Vusi, the use of variables allows him to draw conclusions about the relative heat conductivity of the different types of metal.

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All living things are composed of single cells or multiple cells. Therefore, option B is correct.

Cell theory is given by Schleiden and Schwann. According to this theory, cells make up every biological entity; they are the basic building block of life, and all life originates from earlier forms of life. Today, the cell idea has become one of the guiding concepts of biology due to its widespread acceptance.

A cell is the lowest form of life. This indicates that a cell cannot be divided into smaller units and yet be considered to be alive. An entire organism, such as a person, can be divided into smaller parts, such as organ systems, organs, and tissues.

Organisms can be unicellular or multicellular. Therefore, option B is correct.

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Energy is transferred from cattails to crickets to shrews to hawks in this wetland food chain (option j).

In a wetland ecosystem, energy is transferred through a food chain consisting of producers and consumers. Cattails, being plants, are the producers that convert sunlight into energy through photosynthesis.

Crickets, as herbivores, consume the cattails, obtaining energy in the process. Shrews, being small insectivores, prey on crickets, gaining energy from them.

Finally, hawks, as apex predators, feed on shrews, acquiring the energy that has passed through the food chain. Thus, the correct statement is J, describing energy transfer from cattails to crickets to shrews to hawks.

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The properties of life that apply directly to the observation of higher metabolic rates in young mice are growth, development, and reproduction, as well as energy utilization.

1. Growth, Development, and Reproduction: The observation that young mice, which are still growing, have higher metabolic rates directly relates to the property of growth, development, and reproduction. This property encompasses the ability of organisms to increase in size, mature, and reproduce offspring. In this case, the higher metabolic rates in young mice indicate their active growth and development stages.

2. Energy Utilization: The observation also directly relates to the property of energy utilization. Metabolic rates reflect the rate at which organisms utilize energy, and the higher metabolic rates in young mice suggest that they are utilizing energy at a faster pace. This is likely due to the high energy demands associated with growth and development processes.

Other properties of life:

3. Homeostasis: Although not directly related to the observation, homeostasis is a fundamental property of life that refers to the ability of organisms to maintain a stable internal environment despite external fluctuations. While the experiment focused on metabolic rates and age-related differences, homeostasis ensures that the mice maintain a stable internal environment necessary for their survival.

4. Organization: Organization is another property of life that refers to the hierarchical arrangement of structures and processes within an organism. While the observation of higher metabolic rates in young mice does not directly relate to organization, it is a fundamental characteristic that underlies the functioning of living systems.

5. Heredity: Heredity, the passing of traits from parents to offspring, is not directly applicable to the observation of higher metabolic rates in young mice. However, it plays a role in determining the genetic factors that influence growth, development, and metabolic processes in mice.

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Answer:

1.) The solute molecules will not move between the two sides because the membrane does not have large enough spaces for the molecules to move through. The water molecules will move to the right side because water moves to places of a higher solute concentration.

2.) The right side represents high concentration because it contains the majority of the solute molecules.

3.) The left side represents low concentration because it contains a small amount of solute molecules compared to the right side.

Answer: Hemoglobin

Explanation:

Answer:

Birds + planes = chicken

Explanation:

If you divide the air density by the amount of dirt on the sun, you get three roasted turkeys and a new haircut.

Answer:

Hey you forgot the part were you stuff the candle with cotton and then square the amount of laptops you have then divide by the amount of iphones produced by the worms that eat batteries to get the answer chicken AND 3 marked white vans but the catch is there are not white they are actually red

Explanation:

Answer: cells, tissues, organs, organ system, organism

Explanation:

Answer: The high resolution of EM images results from the use of electrons (which have very short wavelengths) as the source of the illuminating radiation. Electron microscopy is used in conjunction with a variety of ancillary techniques (e.g. thin sectioning, immuno-labeling, negative staining) to answer specific questions.

Explanation:

Answer:

Processes. Plants take up essential elements from the soil through their roots and from the air through their leaves. Nutrient uptake in the soil is achieved by cation exchange, where in root hairs pump hydrogen ions (H+) into the soil through proton pumps

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Answer:

water, sun, soil

Explanation:

Plants absorb nutrients and water through their roots, but photosynthesis occurs in the leaves. So, plants need to get fluids and nutrients from the ground up through their stems to their parts that are above ground level.

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Answer: B

Explanation:

Answer:

Some animals would be forced to migrate.

Explanation:

Animals and species cannot adapt, evolve, or go extinct in a matter of weeks. Adaptation and evolution happen over the course of hundreds of thousands of years and extinction would be unlikely unless there was an extremely endangered species that died when the forest was cut down.

The cause of animal migration may be deforestation that is loss of shelter. The correct answer is d) Some animals would be forced to migrate.

The extensive movement of a species from one location to another is known as animal migration. The majority of animals move throughout particular seasons in search of food, water, or mate.

When people clear or thin forests to make timber or to use the ground where the trees formerly stood for farming, grazing, extraction (of minerals, oil, or gas), or development as a result of population growth and migration, this is known as deforestation.

Deforestation results in soil erosion, destruction of natural ecosystems, loss of biodiversity, and problems with the water cycle. Another factor in climate change and global warming is deforestation.

By absorbing greenhouse gases (such as carbon dioxide) and serving as a carbon sink, forests fight climate change. They provide food, clean water, oxygen, and medical care. They are essential to the water cycle because they act to add water to the air through transpiration. Forests operate as floodwater sink, reducing the destructive impacts of floods. Deforestation, therefore, makes the continent more susceptible to various natural disasters. The dense concentration of trees in forested regions prevents soil erosion by giving the soil mechanical support.

Animals are impacted by deforestation in many ways. In addition to many other things, it results in habitat damage, elevated predatory danger, and decreased food availability. As a result, many animals perish, some lose their habitats and others their food supplies. In actuality, one of the primary reasons for extinction is deforestation.

Deforestation destroys the natural habitats of wild animals, which causes them to migrate to new ecosystems or be abandoned to perish without adequate protection. Because they are losing their native environment, many animal species are in danger of going extinct.

Hence, the correct answer is d).

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Answer: A I think

Explanation: Sorry if wrong

Chlorophyll molecules are primarily located in thylakoid membranes within chloroplasts. Here, they capture light energy to perform photosynthesis.The correct option is A.

The label that points to the part of the chloroplast where chlorophyll molecules are found is A. 1. These molecules are located in the thylakoid membranes, specifically in the photosystem complexes.

However, within a chloroplast, chlorophyll molecules are primarily found in structures called thylakoids. Thylakoids are flattened sac-like membranes arranged in stacks (grana) inside chloroplasts. Chlorophyll molecules are integral components of the thylakoid membranes where they absorb light energy for photosynthesis. It captures light energy from the sun and uses it to help convert carbon dioxide and water into glucose and oxygen in the photosynthesis process.

Therefor the correct option is A.

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