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What is a charged atom called?

Protons and neutrons exist in the nucleus of an atom. Protons have a positive charge, whereas a neutron has no charge. Electrons are negatively charged particles that zoom around the nucleus.\nSome elements are electropositive, while others are more electronegative. Atoms like to have a full outer electron shell, so they either try to gain or lose electrons to fill their outer shells. Electropositive elements such as lithium, whose atoms have few electrons in their outer level, will donate them to other atoms. They then become positively charged because they have more protons than electrons. E..

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What is a climate survey?

Many climate surveys use multiple choice questions for objective matters and attitudinal surveys for more subjective ones. The purpose of attitudinal scales is to give subjective information a more objective representation by yielding a numerical average. Feedback from climate surveys is vital for creating change within an organization and allowing that organization to utilize its strengths.

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Is KCl soluble in water?

The alkali metals are the elements in Group 1A of the periodic table, and all compounds made of alkali metals are soluble.\nPure KCl is odorless, but the compound has a salt-like taste when dissolved in water. Potassium chloride is used for food processing and has medical and scientific applications. It can be extracted from ores such as potash and carnallite. When found as a pure mineral, KCl is known as sylvite.

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When does water stop moving across a membrane?

If a cell is placed in a solution that has a higher concentration of a dissolved substance than the solution inside the cell, water moves across the membrane to the outside of the cell and causes the cell to shrink. If a cell is placed in a solution that has a lower concentration of a dissolved substance than the solution inside the cell, water flows into the cell and causes the cell to swell.

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How many different kinds of bases can be found in DNA?

The Human Genome Project was tasked with sequencing all the base pairs, which was no small undertaking. Each of the 23 chromosomes has anywhere from 50,000,000 to 300,000,000 base pairs, according to the National Human Genome Research Institute, and the Human Genome Project sought to sequence each of them. It is estimated that the human genome carries an estimated 30,000 genes.\nSequencing these base pairs is critical for researchers. The base pairs indicate what type of genetic information is carried in each part of an organism's DNA. Sequencing also reveals mutations and variants within..

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Where can you find a diagram of the lower back?

InnerBody.com offers both a 2D and a 3D interactive diagram of the lower back and pelvis bones. Users can click on individual bones from the diagram or from a corresponding list to learn more about that particular bone's name, development and purpose. The 3D version allows users to rotate the skeleton for a more comprehensive view. Healthline.com's lower back diagram is similar to InnerBody.com's 2D diagram, but it displays the lower back's superficial muscles in addition to its bones. The static diagrams from SpineUniverse.com, on the other hand, focus on the lower portion..

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What type of macromolecule is DNA?

The bases found in a DNA molecule are either purines or pyrimidines. The purines are adenine and guanine, while the pyrimidines are cytosine and thymine. The pentose found in DNA is 2-deoxyribose, which is a sugar compound. DNA macromolecules are held together by hydrogen bonds between the nucleotides, which twist in a double helical pattern.

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What is the outer layer of skin called?

The deepest level of epidermis contains active, growing cells. New cells are then pushed up through the other levels of epidermis to the surface, dying along the route. Dead cells fill with keratin, a strong protein. These keratin-laden cells comprise the outer layer of the epidermis, providing the body with much-needed protection. Because the body continually sheds old cells, replacing them with new, humans have an entirely new skin surface every 20 to 30 days.\nThe inner layer of skin ? thick connective tissue ? is called the dermis. Contained within the dermis is the body?s network of nerve..

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What are the differences between heredity and environmental factors?

The hereditary aspect of an organism's makeup depends on the genetics that pass down from its parents' DNA. For example, identical twins both bear the same external features, which they inherit from their parents' genes. In contrast, environmental influences are factors in an organism's environment that causes it to develop. One example of this is phenylketonuria, which is a genetic defect that once resulted in learning difficulties. Scientists found that reducing the amount of phenylalanine in the diets of children with phenylketonuria prevented learning difficulties. This..

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What does anaerobic mean?

The word anaerobic is from the French word, anaérobie, coined by Louis Pasteur in 1863. It is from the Greek an- ("without") + aer ("air") + bios ("life"). The opposite word is "aerobic," meaning requiring oxygen or air.\nIn humans, anaerobic organisms are typically found in the gastrointestinal tract. Some anaerobic bacteria produce important toxins.

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