dangers from exposure to pesticides through food depend on . multiple select question. consumer's resistance or susceptibility to a substance. how much and how frequently it is eaten. how potent the chemical toxin is. how concentrated it is in the food. the type of food contaminated with the pesticide.

Answer:

Neurons depend on mitochondria. ATP generation by mitochondrial respiration in the brain consumes 20% of the body's oxygen although the brain is only 2% of the mass of the body (Attwell and Laughlin, 2001). ... Every part of the neuron requires ATP and therefore requires mitochondria to be present.The dendritic processes and spines of neurons are essentially expansions of cytoplasm containing most of the organelles found in the cell body. ... Rough endoplasmic reticulum and ribosomes are present in large but not small dendrites.

The neurones contain many mitochondria and many ribosomes as neurons depend on mitochondria. ATP generation by mitochondrial respiration in the brain consumes 20% of the body's oxygen although the brain is only 2% of the mass of the body.

The neurones contain many mitochondria and many ribosomes as neurons depend on mitochondria. ATP generation by mitochondrial respiration in the brain consumes 20% of the body's oxygen although the brain is only 2% of the mass of the body.

Every part of the neuron requires ATP and therefore requires mitochondria to be present.The dendritic processes and spines of neurons are essentially expansions of cytoplasm containing most of the organelles found in the cell body. Rough endoplasmic reticulum and ribosomes are present in large but not small dendrites.

The outermost part of brain has been known as Dura mater which has been consist of a strong membrane layering and it has been thick located just beneath the skull and vertebral column.

Therefore, the neurones contain many mitochondria and many ribosomes as neurons depend on mitochondria. ATP generation by mitochondrial respiration in the brain consumes 20% of the body's oxygen although the brain is only 2% of the mass of the body.

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The mutation occurs in somatic cells from the skin. The mutated cells usually die causing sunburn, in worst cases, it can cause skin cancer. The DNA that is transmitted to the offspring is located in the germinative cells that are not affected.

The mutation resulting in the given case would not affect the future offspring as  only the mutations in reproductive cells are passed to the offspring from the parents not the one triggered environmentally.

It refers to the changes in the DNA of the person, which take place post conception and are not inherited. One of the prime example of acquired mutation is exposing of the skin cell by the ultraviolet radiation. This can result in the condition known as melanoma.

Acquired mutation is the major cause of cancer development. The UV rays can destruct the DNA of the skin cells, which may eventually become cancer cells. However, this form of mutation will not affect the future offspring as these are not inherited. Only that form of mutation passes to the next generation, which occurred in the reproductive cells.

Thus, in the given case, the mutated DNA has no effect on the future offspring as these are not inherited.

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The correct sequence of pre-embryonic structures formed is: d. zygote (made up of a single cell), morula (made up of 16 cells), blastocyst (made up of 70-100 cells).

The pre-embryonic period, known as the germinal phase, is the first and shortest phase of embryonic development. It lasts from fertilization to the second week of the embryo's life. In this phase of embryo development, the zygote repeatedly self-replicates.

Fertilization, union of a sperm nucleus, of paternal origin, with an egg nucleus, of maternal origin, to form the primary nucleus of an embryo. In simple words, the fusion of a haploid male gamete (spermatozoa) and a haploid female gamete (ovum) to form a diploid cell, the zygote, is called fertilization.

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The cell theory states that absolutely all living beings are composed of cells, for which all cells must contain the necessary structures to metabolize (nourish) and self-perpetuate (reproduce) as the cell nucleus, where the DNA is store.

Cell theory focused the efforts of biology on the cell as the minimal structure to sustain life.

Therefore, we can conclude that the cell theory allowed us to understand the dynamics and processes of the cell.

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Ham and turkey belong to the macromolecules of proteins, oil and vinegar belong to the macromolecules of fats and oil, while wheat bread belong to the macromolecules of carbohydrates.

The macromolecule nutrients are those nutrients that are made up of large organic molecules which are usually proteins, carbohydrates, fats and oil.

The macromolecule category that each food item belong to include the following:

The monomer unit that each food item must be broken down into to perform cellular processes include the following:

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Answer:

The most radiosensitive stage of cell division is the G2 phase, which occurs just before the actual division process, called mitosis. In this stage, the cell is particularly vulnerable to ionizing radiation damage, as it has completed DNA replication and is preparing for cell division. Radiosensitivity refers to the vulnerability of a cell to the harmful effects of radiation, which can cause DNA damage and potentially lead to cell death.

The cell cycle phase also determines a cell's relative radiosensitivity, with cells being most radiosensitive in the G(2)-M phase, less sensitive in the G(1) phase, and least sensitive during the latter part of the S phase.

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Explanation:

The answer is **b) are too polar to pass through cell membranes**. Lipid hormones are hydrophobic, which means that they are not attracted to water.

This makes them unable to pass through cell membranes, which are made of phospholipids. Lipid hormones are a type of hormone that is made up of lipids. Lipids are a group of molecules that are insoluble in water. This means that they do not dissolve in water and they tend to clump together.

Lipid hormones are produced by glands in the body and they are released into the bloodstream. The lipid hormones then travel through the bloodstream to target cells. However, they cannot pass through the cell membranes of the target cells because the cell membranes are made of phospholipids, which are also hydrophobic.

In order to get into the target cells, the lipid hormones bind to receptors on the cell surface. These receptors are proteins that are embedded in the cell membrane. When the lipid hormone binds to the receptor, it changes the shape of the receptor. This change in shape activates the receptor, which then sends a signal inside the cell.

The signal that is sent inside the cell can activate genes or it can change the activity of other proteins. This is how lipid hormones are able to control the activity of cells.

* Lipid hormones include testosterone, estrogen, and cortisol.

* Lipid hormones are important for regulating a variety of bodily functions, including growth, development, and reproduction.

* Lipid hormones can be affected by diet and lifestyle factors.

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Answer:

its retina respond to colour and form inverted image behind

Answer:All of the above

Explanation: Reason being is because the cell membrane protects the cell, that's what is really important about it's function. But all of the following is true too.

Answer:meristem

Explanation:

The phase of mitosis where the chromatin condensation into chromosomes, the disappearance of nuclear membrane and the formation of centrioles can be observed is the prophase.

Mitosis is one of the two types of cell division where a parent cell divides to form two daughter cells. The daughter cells are the exact replica of the parent cell. The genetic material also remains the same in mitosis and hence it is called the equational division.

Chromosome is the most compact form of genetic material comprised of DNA strand as well as the histone proteins. The structure of chromosome is composed of  two sister chromatids joined together at a region called centromere. The formation of chromosomes is observed only during prophase.

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Answer:

molecular breeding accelerates the times for genetic improvement  

Explanation:

Molecular breeding refers to the techniques used in molecular biology to improve phenotypic features in plants and animals of agronomic and economic interest. Molecular breeding involves many diverse molecular techniques which include, among others, selection assisted by molecular markers (MAS), genome editing techniques (e.g., the CRISPR-Cas genome editing system), quantitative trait loci (QTL) mapping, gene introgression assisted by markers, etc. These techniques can dramatically accelerate breeding programs aimed at improving plant/animal traits and, therefore, they have a fundamental advantage with respect to conventional breeding methods.

These findings have crucial implications for understanding the effects of desiccation on competition among algae species. The correct option is d. The exotic alga competitively excludes the native alga in wet habitats

Based on the design of the experiment, it appears that your colleague is interested in understanding how desiccation, or drying out, affects competition between a native alga and an exotic alga. The experiment includes four different plot types, each with different combinations of the two types of algae and varying levels of moisture. Specifically, dry habitats are part of the fundamental niche of the exotic alga, meaning that this species is adapted to thrive in dry conditions.

Interestingly, the results of the experiment suggest that the exotic alga is actually better able to compete with the native alga in wet habitats, where both species are present. This means that in these conditions, the exotic alga is able to outcompete the native species and establish dominance.

Overall, these findings have important implications for understanding the impact of desiccation on competition between different algal species. They suggest that the exotic alga may have a competitive advantage in certain conditions, and that efforts to control its spread may need to take into account the effects of moisture levels on its growth and spread.

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Answer:

A

Explanation:

Plants have three types of tissues:

• Dermal, tissue, which forms the surface of the leaves and stem.

• Vascular, tissue, which includes xylem and phloem

• Ground, tissue, where photosynthesis takes place.

This means B, non-living is the right answer because is NOT a type of plant tissue.

Answer:

I think B should be the answer because science cannot tell the future

Answer:

So, I would believe that the answer is C) A laser beam looks bent when it passes through glass blocks. So we know that refraction means the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

Explanation:

So we know that refraction means the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

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Answer:

For most crops the saturation point will be reached at about 1,000–1,300 ppm under ideal circumstances. A lower level (800–1,000 ppm) is recommended for raising seedlings (tomatoes, cucumbers and peppers) as well as for lettuce production

Explanation:

(I do not take credit for the answer)

Answer: Diffusion and Osmosis

Explanation: Diffusion and Osmosis are processes that don’t use ATP or energy. Both of these processes involve molecules moving from an area of high concentration to low concentration. Osmosis is the diffusion of water.

Answer:

B. New hydrogen bonds are formed, breaking the bond in the structure of the nucleic acid.

Explanation:

Nucleic acids are one of the four major biomolecules in living systems. They function to store and transmit genetic information in living organisms. Nucleic acids are polymers made up of NUCLEOTIDE monomeric units. DNA and RNA are the two nucleic acids in nature.

However, since the complementary nucleotide bases that make up nucleic acids interact together via HYDROGEN BONDS i.e. G-C, A-U, if new hydrogen bonds are formed, breaking the bond in the structure of the nucleic acid will disrupt the nucleic acid sequence

Answer:

A. The nucleic acid is exposed to extreme temperature, causing denaturation.

Explanation:

I took the quiz

The most inferior portion of the pharynx is the hypopharynx. Therefore, such statement is false.

(1) dendrites =  C. highly branched, multiple processes containing spines.

(2) chromatophilic substance = E. rough endoplasmic reticulum

(3) axon = D. conducts impulses

(4) cell body = B. part of neuron from which axon substance and dendrites extend

(5) neurofilaments =  A. fine threads in an axon

Dendrites are extensions made to receive signals from nearby cells. When activated by other neurons, they take the shape of projections with a tree-like structure that transport the electrochemical charge to the cell body (or, more rarely, directly to the axons).

Chromatophilic substances or Nissl bodies, also known as nissl substance, are cytoplasmic granules in nerve cell bodies that exhibit basophilic clumping under light microscopy and exhibit strong basic dye stains. They are made up of rudimentary endoplasmic reticulum and clumps of free polyribosomes.

The component of a nerve cell (neuron) known as the axon, also known as the nerve fiber, transports nerve impulses away from the cell body.

The compact portion of a nerve cell that houses the nucleus and cytoplasm is called the cell body. It is also referred to as the perikaryon or the soma.

These are microscopic filament of protein found in the cytoplasm of neurons and along with neurotubules these make up the structure of neurofibrils

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Answer:

Answer:

Some of the characteristics of reptiles are :-

Hypertensive heart disease is a long-term condition that develops over many years in people with hypertension.

When your high blood pressure (hypertension) is not controlled, it can lead to a variety of health issues, including heart failure and conduction arrhythmias. Hypertensive heart disease is caused by persistently high blood pressure (over 120/80 mmHg). Heart disease risk goes up as people get older and continue to have high blood pressure. People over the age of 65 are more likely to develop heart failure.

Your heart has to work harder to pump blood through your body when you have high blood pressure for an extended period of time.

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when two genes are located on the same chromosome, the physical basis for the production of recombinant offspring in a testcross is genetic recombination, which occurs during crossing over in meiosis.

When two genes are located on the same chromosome, the physical basis for the production of recombinant offspring in a testcross between a dihybrid parent and a double-mutant (recessive) parent is known as genetic recombination. Genetic recombination occurs during the process of meiosis, specifically during crossing over.

During meiosis, homologous chromosomes pair up and exchange genetic material in a process called crossing over. This results in the exchange of alleles between the chromosomes.

If two genes are located on the same chromosome, they are more likely to be inherited together, unless crossing over occurs between them.

In a testcross between a dihybrid parent (carrying two different gene pairs) and a double-mutant (recessive) parent, genetic recombination can result in the production of recombinant offspring.

This happens when crossing over occurs between the genes on the same chromosome, leading to the exchange of alleles between the genes.

The likelihood of genetic recombination and the production of recombinant offspring depends on the distance between the two genes on the chromosome.

If the genes are closer together, they are less likely to undergo crossing over and genetic recombination. Conversely, if the genes are further apart, they are more likely to undergo crossing over and genetic recombination.

In conclusion, when two genes are located on the same chromosome, the physical basis for the production of recombinant offspring in a testcross is genetic recombination, which occurs during crossing over in meiosis.

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The verbal description of the storyboard contains two problems: the incorrect use of the term "adapted" and the assumption that freckled Bobbits dominated over non-freckled Bobbits solely because of blending in with the speckled sand. It is important to address these issues to ensure accurate understanding of the concept of natural selection and the factors contributing to the dominance of certain traits.

The problems can be fixed by clarifying the concept of adaptation and considering additional factors that may have influenced the dominance of freckled Bobbits.

Problem: The incorrect use of the term "adapted." In the verbal description, it states that "as each Bobbit adapted, freckled Bobbits dominated over the non-freckled Bobbits." This usage of the term implies that individual Bobbits actively adapt in response to their environment, which is not how adaptation works. Adaptation occurs over generations through the process of natural selection, where individuals with advantageous traits have higher survival and reproductive success.

Solution: To fix this problem, the description should be modified to reflect that freckled Bobbits were more likely to survive and reproduce due to their advantageous trait of blending in with the speckled sand, leading to a higher proportion of freckled Bobbits in subsequent generations.

Problem: Assuming that freckled Bobbits dominated solely because of blending in with the speckled sand. While blending in with the environment can provide a selective advantage, it is important to consider other factors that could have influenced the dominance of freckled Bobbits, such as predation, mate preference, or other environmental pressures.

Solution: To address this problem, the verbal description should be expanded to acknowledge that while blending in with the speckled sand may have contributed to the fitness of freckled Bobbits, additional factors may have also played a role. This includes factors like reduced predation risk or increased chances of successful reproduction through mate selection.

By fixing these problems, the verbal description will provide a more accurate representation of natural selection, emphasizing the gradual changes in populations over time and the interplay between advantageous traits and environmental factors.

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Light information reaches the suprachiasmatic nucleus via the thalamic pathway. So, the correct answer is option A.

The suprachiasmatic nucleus is a small cluster of cells located in the hypothalamus that is responsible for regulating our circadian rhythm. It receives information about light and dark cycles through a specialized pathway called the retinohypothalamic tract. This pathway starts at the retina of the eye and travels to the suprachiasmatic nucleus via the thalamus.

The thalamus is a relay center in the brain that processes and directs sensory information to the appropriate areas of the cortex. In the case of light information, the thalamus receives signals from the retina and sends them to the suprachiasmatic nucleus to help regulate our sleep-wake cycle. This pathway allows the body to adjust to changes in the environment and maintain a consistent daily rhythm.

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Griffith combined live non-virulent bacteria with a heat-inactivated virulent strain in this experiment. He then infected mice with this concoction, and the mice got pneumonia and died, much to his amazement. He was also successful in isolating colonies of the virulent strain from these mice.

Griffith's experiment, initially published in 1928 by Frederick Griffith was the first to show that bacteria may transfer genetic information via a process known as transformation.  Griffith's discoveries were followed by studies in the late 1930s and early 1940s that identified DNA as the substance that transmitted genetic information.

In the aftermath of the post-WWII Spanish influenza pandemic, pneumonia was a leading cause of mortality, and Griffith was researching the prospect of developing a vaccine. Griffith employed two strains of pneumococcus (Diplococcus pneumoniae) bacteria that infect mice: a virulent type III-S (smooth) strain and a nonvirulent type II-R (rough) strain.

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The hard palate forms the anterior, upper roof of the mouth and is supported by bone. It has irregular ridges or folds in its mucous membrane lining.

The hard palate is composed of two main parts: the palatine process of the maxilla and the horizontal plate of the palatine bone. The hard palate plays a crucial role in speech, swallowing, and respiration.

The mucous membrane lining the hard palate has irregular ridges or folds, known as rugae. These rugae provide friction and help in manipulating food during mastication. Additionally, they aid in the formation of a bolus, which is a mixture of chewed food and saliva that can be easily swallowed. The hard palate also creates a barrier between the oral and nasal cavities, allowing for proper breathing and speech production.

In summary, the hard palate is an essential structure in the oral cavity, providing support and function for vital processes such as eating, breathing, and speaking. Its bony composition and mucous membrane with rugae contribute to its effectiveness in these roles.

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