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In fact, both processes are the mechanisms of evolution and alter the allele frequency in the population. However, they change the frequency of alleles in a different way. Natural selection causes the individuals with better abilities of surviving and reproducing…
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I hope, this will help) Polyploidy represents the case of chromosomal mutation, where the cell contains the extra set of chromosomes: three sets - triploid, four sets - tetraploid, etc. As a rule, this kind of mutation is inherit to…
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Greetings! Aminoacids are the monomers of proteins. Amino acid consists of the acidic carboxyl group (-COOH), basic amino group (-NH2), and a side chain (R group), specific for each amino acid. All of them are joined together with peptide bonds.
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The main difference between mitosis in plant and animal cells is the process of dividing parent cell into daughter cells during cytokinesis. In this process, the animal cells are forming the furrow, while the plant cells are forming a new…
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As a rule, we use roman numerals in the name of a compound when a metal cation forms two ions with different states of oxidation. For instance, Cu can form two different ions - Cu+ and Cu 2+. Combining with…
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Atomic mass is a mass of a single atom, it can be calculated as a sum of neurons and protons in the atom. In turn, a molar mass is a mass of a substance (in grams) divided by the number…
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Here's the answer: When an atom emits an alpha particle, it transforms into a different element, therefore, its atomic number will be reduced by two.
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Average velocity over an interval is a change in position divided by time. Average velocity = Δx / Δt vavg = (x1 - 1) / (t1 - t0)
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They are as follows: Protein buffer system (maintains cell acidity) Phophate buffer system (neutralises extra hydrogen ions) Carbonic acid bicarbonate buffer system (neutralises acids) Additionally, all of them maintain pH homeostasis of the human blood.
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Water can dissolve the ionic compound because of the diference between its hydration and lattice energy.
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The given mass of an element can be found using Avogadro's number, which equals 6.02214076 × 1023 mol-1 and gives you one mole of anything. 1. You determine the molar mass of the element. 2. Then, you divide the given…
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We can solve this using the trig unit circle. sin x = 1/2 = sin (π/6) → x = π/6
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Correct answer is 1. MgO is expected to have the highest lattice energy.
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The main purpose of cytokinesis is to split the parent cell into the daughter cells. However, cytokinesis  in the plant cells forms the cell wall in this process, while cytokinesis  in the animal cells forms the cleavafe furrow.
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The specific heat capacity of ice is 2.108kJ/kgK, water - 4.200 kJ/kgK, steam - 1.996 kJ/kgK.
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You should you the following energy equation: E = n * h * ν h = Planck's constant = 6.62607004 × 10-34 m2 kg / s So, dividing the energy by Planck's constant will give you the number of photons emitted per…
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Correct answer is B. storing energy that will be transferred to ADP to resynthesize ATP Generally, creatinine phosphate is used as a source of additional enegy during intensive muscular activity, when the standard aerobic respiration is not sufficient.
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The answer is: none of them. Explanation: Gluconeogenesis is an enzyme-catalyzed reaction, taking place in the liver. When phosphoenolpyruvate is formated from oxaloacetate, the carbon dioxide gets discharged in this process, and no external CO2 is needed in order to…
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Endoplasmic reticulum (also known as ER) is transporting the proteins to the lumen of Golgi complex. After that they are modified and sent to the secretory vesicles and lysosomes (hydrolytic enzymes).
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Both processes involve a cycle of chemical reactions (cellular respiration involves conversion of biochemical energy, whereas photosynthesis involves conversion of carbon dioxide and water into glucose and oxygen) Both processes involve energy conversions (see previous explanation) Both processes use an…
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Greetings! The major function of a vascular tissue is maintaining the sugar and water balance of a plant. It consists of phloem and xylem, the first one transports sugar, while the latter transports water and minerals to the different parts…
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To find the answer, we have to divide the area of a circle for bull's eye by the area of the circle for dart board. The area of a circle formula is: A = π * r2 Dart board radius…
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Correct answer is D - both balls have the same electrical charge.
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The correct answer here is B - kidneys. They are the main excretion organs, filtering blood and regulating the body water balance.
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Hi there! BrCl3 is definitely a polar molecule, it is evident from its T-shaped molecular geometry.
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It can be calculated this way: As can be seen on the picture, there're three mole of green (P1) P1 = 0.63 atm = 2*3 atoms P2 = 5 moles of diatomic orange P3 = 6 moles of diatomic blue…
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In calculus, a limit is that value a function also known as the sequence gets as the index or input gets to a certain value. Limits are very critical in mathematical analysis, and particularly, in calculus. They are used to…
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Isaac Newton is known for inventing calculus among other things. His main focus was on gravitational pull and motion laws. These were the basis of his invention of calculus. He came about calculus as he made efforts to describe the…
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One of the terms you will come across while studying calculus is the critical point. Although used in different mathematics branches, it has a specific definition in calculus. It is well understood when handling functions of an actual variable.  In…
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