How do scientist provide solution for many of the worlds problem

Answer:

Gibberellin

Explanation:

I've studied that gibberellin is a plant hormone that promotes cell elongation and division, causing the cells in the leaves to elongate and divide more, this leads to an increase in leaf size.

Hope it helps! :)

The plant hormone that helps in increasing the leaf size is the phytohormone Auxin .

Plants create signalling molecules called plant hormones, which are found in low concentration. All  plant's growth and progression are regulated by plant hormones.

There are basically five types of plant hormones that are considered to be essential for plant growth . They are Auxin , Cytokinin , Gibberellin , ABA , Ethylene .

The Cytokinin and Auxin work together to enhance the development of leaf as both of the phytohormones are responsible to modulate the growth of leaf as well  as controlling the cell cycle . These hormones are considered essential for plant growth and it occur naturally at various concentrations within plants throughout the duration .

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Explanation:

advantage of natural resources

Answer:

B & C

Explanation:

Environmental pressure, also known as selection pressure or ecological pressure, refers to the influence exerted by the environment on living organisms, driving the process of natural selection.

It encompasses various factors, such as climate, competition for resources, predation, and other ecological interactions.

Environmental pressure plays a pivotal role in shaping the characteristics and traits of organisms within a population.

Individuals possessing advantageous traits that align with the environmental conditions are more likely to survive, reproduce, and pass on these beneficial traits to the next generation.

Over time, this process leads to the adaptation and evolution of species, enhancing their ability to thrive and succeed in their specific ecological niches.

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Explanation:

Secondary succession occurs after a disturbance such as a forest fire, where there is still some organic matter to allow new plants to grow. Both types of succession take place over long periods of time and result in the communities reaching a state of equilibrium.

The following types of microscopy are known for their ability to support the creation of three-dimensional images are C. Confocal microscopy and D. Scanning electron microscopy

The reason why these types of microscopy are known for their ability to support the creation of three-dimensional images is because of the way they capture images. Confocal microscopy is a light-based microscopy technique that provides three-dimensional images of thick specimens by eliminating out-of-focus light from the specimen. Confocal microscopy is capable of achieving high spatial resolution and has been used in a variety of scientific and medical research applications, including studies of cell biology, neuroscience, and tissue engineering.

Scanning electron microscopy is an imaging technique that uses a focused beam of electrons to produce images of the surface of a sample. In scanning electron microscopy, the electron beam is scanned across the surface of the sample, and the electrons that are scattered from the surface are detected and used to create an image. Scanning electron microscopy is capable of providing high-resolution images of the surface of a sample and is commonly used in materials science, biology, and other fields of research. So therefore the correct answer is C. Confocal microscopy and D. Scanning electron microscopy are the types of microscopy known for their ability to support the creation of three-dimensional images.

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Photosynthesis is a process by which plants and animals make their food in the presence of sunlight, water and carbon dioxide.

True

If the substances can move across the cell membrane without the cell expending energy, the movement of molecules is called passive transport.

A type of cellular transport known as passive transport involves the movement of molecules and ions along concentration gradients. It indicates that a drug has a propensity to migrate from a region of higher concentration to a region of lower concentration.

Unlike to active transport, another type of cellular transport, which fundamentally requires ATP to move substances against their concentration gradient, the process does not require metabolic energy (e.g. ATP) because the chemicals are moved downhill or along their concentration gradient.

The four main methods of passive transport are osmosis, filtration, simple diffusion, and assisted diffusion.

Therefore, If the substances can move across the cell membrane without the cell expending energy, the movement of molecules is called passive transport.

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Single domain camelid antibodies (VHHs) and iron oxide nanoparticles have both recently gained attention for their possible applications in the medical field. However, their pharmacokinetics have only received a small number of in-depth characterizations (PK). This work set out to create imaging techniques and pharmacokinetic models to aid in the creation of a novel class of brain MRI molecular contrast agents in the future. Using a hybrid strategy, an effective near-infrared (NIR) imaging method was developed to track the kinetics of VHH and VHH conjugated nanoparticles in mice. Kinetics in the blood were evaluated by direct sampling, and kinetics in the kidney, liver, and brain were evaluated by serial in vivo NIR imaging.

Pharmacokinetics, sometimes referred to as PK, is a branch of pharmacology that studies how drugs interact with living things after being given to them. Any chemical xenobiotics, such as pharmaceutical medications, pesticides, food additives, cosmetics, etc., are included in the compounds of interest.

Consider pharmacokinetics to be the four stages of a drug's passage through the body: absorption, distribution, metabolism, and excretion (ADME).

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Based on the genetic testing results, Mary is expecting a boy as indicated by the presence of one X and one Y chromosome in the fetus, the correct option is B.

In humans, the presence of one X chromosome and one Y chromosome in the twenty-third chromosome pair indicates the biological sex of a male. Females typically have two X chromosomes (XX), while males have one X and one Y chromosome (XY). Therefore, Mary's fetus having one X and one Y chromosome suggests that she is expecting a boy.

The other options are not applicable in this case. Down syndrome, characterized by the presence of an extra copy of chromosome 21, is unrelated to the twenty-third chromosome pair. Additionally, Klinefelter syndrome, which involves the presence of an extra X chromosome (XXY), is not relevant since Mary's fetus has one X and one Y chromosome, not two X chromosomes, the correct option is B.

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The complete question is:

Mary is pregnant with her first child and has recently had genetic testing to determine whether her baby-to-be is growing normally. Among other things, her test results indicate that the twenty-third chromosome pair of her fetus includes one X chromosome and one Y chromosome. This means that:

A. Mary is expecting a girl.

B. Mary is expecting a boy.

C. Mary's baby will have Down syndrome.

D. Mary's baby has a 50-50 chance of having Klinefelter syndrome.

Answer and Explanation:

Regarding genetics, the results of the study show that the mother's genetic material does not influence the behavior of rats in times of stress or in the biological responses of rats to these stressful moments. This is because the mice inherited their mothers' genes, but did not show the same results in a stressful situation when they were raised with different mothers.

Regarding epigenetics, however, we can see that the mothers' behavior in relation to the care of rats managed to provoke epigenetic changes that prevented or stimulated the expression of genes linked to stress, in these rats. The rats that were raised with attentive mothers showed a low expression of stress-linked genes, regardless of the biological mother they had. In addition, it is possible to notice that this modification is permanent, since the rats presented this same type of response throughout their lives.

Therefore, the correct answers are:

The chloroplast is responsible for capturing light energy, converting it into chemical energy (in the form of ATP and NADPH), and utilizing that energy to convert carbon dioxide into glucose during the process of photosynthesis.

The correct processes that occur inside the chloroplast of a plant cell are:

Sunlight is trapped: The chloroplast contains pigments, such as chlorophyll, that can capture sunlight during the process of photosynthesis.

Glucose (sugar) is produced: Through the process of photosynthesis, the chloroplast uses captured sunlight, carbon dioxide, and water to produce glucose (sugar). This glucose serves as an energy source for the plant.

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Answer:

Lunar Eclipse: The moon moves in an orbit around Earth, and at the same time, Earth orbits the sun. Sometimes Earth moves between the sun and the moon. When this happens, Earth blocks the sunlight that normally is reflected by the moon. (This sunlight is what causes the moon to shine.)

Explanation:

Answer:

18 percent

Explanation:

The temperature and pressure conditions of surface air at the equator are characterized by high temperatures and low atmospheric pressure.

Due to the direct exposure to the sun's intense radiation, the equator receives a significant amount of solar energy. As a result, the surface air at the equator is generally warm to hot. The equatorial region experiences high temperatures throughout the year, with average temperatures often exceeding 30 degrees Celsius (86 degrees Fahrenheit).

In terms of atmospheric pressure, the equator is associated with low pressure. The intense heating of the air causes it to rise, creating an area of low pressure at the surface. This low-pressure zone is known as the Intertropical Convergence Zone (ITCZ). The rising warm air leads to the formation of convective clouds and frequent precipitation in the equatorial regions.

These temperature and pressure conditions at the equator play a significant role in driving atmospheric circulation patterns, including the formation of Hadley cells and the redistribution of heat and moisture across the globe.

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The cell cycle is the process through which cells develop and divide. The procedure is divided into two stages. Only during cell division are the chromosomes visible.

The cell cycle consists of a series of steps in which chromosomes and other cellular material are replicated to create two copies. The cell splits into two daughter cells, each of which receives a duplicated copy of the material. The cell cycle is completed when each daughter cell is surrounded by its own outer membrane.

The various stages of the cell cycle include: Interphase - This phase includes the G1, S, and G2 phases. M Phase - This is the mitotic phase, divided into prophase, metaphase, anaphase, and telophase. Cytokinesis – At this stage the cytoplasm of the cell divides.

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The option that is not a characteristic of the source of rivers and streams is D)Murky Water

Let us discuss more about the characteristics of the source of rivers and streams.

What is the source of a river?

A River is any natural stream of water that flows in a channel with defined banks. Modern usage includes rivers that are multi-channeled, intermittent, or ephemeral in flow and channels that are practically bankless.

The source of the river is the point from where a river starts flowing. It is usually a high point on the land from where water flows downward and begins its journey to join another water body or the sea.

The characteristics of the source of rivers and streams are as follows:

1. Cooler temperatures - Rivers and streams originate in the mountains where temperatures are low and cold. So, the water is usually very cold.

2. High oxygen levels - Because the water comes from a higher altitude, it contains more dissolved oxygen.

3. Freshwater fish - Rivers and streams are the natural habitats of freshwater fish such as trout, bass, and salmon.

4. High speed - As rivers and streams move down the mountains, the speed of the water increases because of gravity.

5. Small width - The width of the river or stream is small as it has just begun its journey from the source.

Thus, From the following options A) high oxygen levels B) freshwater fish C) cooler temperatures and D) Murky waters , Option D) Murky Waters is NOT a characteristic of the source of rivers and streams.

therefore, the correct option is D)Murky waters.

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Answer:

In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation:

Answer:

C

Explanation:

DNA is double stranded while RNA mostly single stranded. DNA having Deoxyribose sugar while RNA having ribose sugar. DNA having pyrimidines C, T while RNA having C, U.

therefore correct answer is C because they both are Polymers of nucleotides. both are nueic acids. nucleic acid, Monomer is Nucleotide .

Answer:

The core

Explanation:

At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy.

Answer:

It discusses Pollution levels in the Air

Explanation: Air can be hazardous to those lungs that are weak. They have something called an Air Quality Alert to warn those with weak lungs to take precautions. Hope this helped!

This statement is FALSE that the 9:3:3:1 ratio exhibited in the f2 generation of a dihybrid cross is a genotypic ratio.

A dihybrid crosses two characteristics. One allele for each attribute displays total dominance since both parents are heterozygous. This indicates that although the phenotype is dominant, both parents carry recessive alleles. The dihybrid cross's anticipated phenotypic ratio is 9: 3: 3: 1.

All plants in the F1 generation are heterozygous yellow round (YyrRr). When this plant is self-pollinated, nine yellow round plants, three yellow wrinkled plants, three green round plants, and one green wrinkled plant are produced in the F2 generation. Dihybrid phenotypic ratio 9:3:3:1 refers to this. This Mendel is referred to as the "Law of Independent Amount."

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Hardwired characteristics of the brain that attempt to keep us in balance by correcting deficiencies are referred to as homeostatic mechanisms.

Homeostasis is the body's ability to maintain a stable internal environment despite external changes.

In the context of the brain, homeostatic mechanisms involve various processes that regulate physiological functions and maintain optimal levels of essential substances.

These mechanisms can include feedback loops that detect imbalances and initiate corrective actions.

For example, if there is a deficiency in a particular nutrient or hormone, the brain may activate mechanisms to increase its production, decrease its consumption, or enhance its absorption from the environment.

Homeostatic mechanisms play a crucial role in ensuring the body's overall stability and functioning, helping to maintain proper levels of various substances and promoting overall well-being.

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Fragile X syndrome has been directly associated with deficiencies in several genes, especially SNRNP.

D is teh correct answer.

A hereditary condition called Fragile X syndrome (FXS) exists. Fragile X Messenger Ribonucleoprotein 1 (FMR1) gene alterations are the root cause of FXS. The FMRP protein, which FMR1 typically produces and is necessary for brain development. People with FXS are unable to produce this protein.

Memory, abstract thought, problem solving, and planning issues can affect both children and adults with FXS. In addition to anxiety and depression, social and behavioural issues, learning challenges, developmental delays, and autism spectrum disorder are frequent.

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The complete question is:

Which of the following has been directly associated with deficiencies in several genes, especially SNRNP? Multiple Choice

A. Leber's hereditary

B. optic neuropathy

C. Angelman syndrome

D. Fragile X syndrome

E. Prader-Willi syndrome

F. Myotonic dystrophy

it gives off protons because it's in a basic solution (pH>7)

Answer:

1 molecule of gluclose (C6H12O6) and 6 molecules of oxygen gas (6O2).

Answer:

Oxygen and Carbohydrates!

Explanation:

They did not prevent whole bacterial cells from growing because they couldn't get into cells, couldn't access their target, were metabolized by the cells etc.

They couldn't enter cells, couldn't reach their target, were processed by the cells, etc., thus they couldn't stop the growth of entire bacterial cells.

Medicines known as antibiotics are used to both prevent and treat bacterial infections. When bacteria adapt to the use of antibiotics, antibiotic resistance develops.

Antibiotic resistance develops in bacteria, not in people or other animals. Both humans and animals are susceptible to infection from these germs, and their infections are more difficult to treat than those brought on by non-resistant bacteria.

Antibiotic resistance causes increased mortality, longer hospital stays, and higher medical expenses.

The way antibiotics are prescribed and used in the world needs to alter immediately. Antibiotic resistance will continue to pose a serious hazard even if new medications are created.

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