BIOLOGY HIGH SCHOOL

Which most likely describes a supersaturated solution? A. a hot solution with all of the solute dissolved
B. a cold solution with all of the solute dissolved
C. a hot solution with most of the solute resting on the bottom
D. a cold solution with some solute resting on the bottom

Answers

Answer 1
Answer:

Answer is A. a hot solution with all of the solute dissolved.

A solution is a homogeneous mixture in which solute is dissolved in solvent. Solution may be unsaturated, saturated and supersaturated. Saturated solution is the solution in which solvent is not able to dissolve more solute at normal temperature.  But if you heat the saturated solution up to 80⁰C, the same solution able to dissolve more solutes making the solution supersaturated. Thus, a supersaturated solution is a solution that contains more solute than what the solvent can normally dissolve.

Answer 2
Answer: a. because when the solution is hot it is easier to dissolve the solute, and thus more solute can be dissolved in the same amount of solvent

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What three principles is gas exchange based on in the respiratory system?

Answers

Answer: Ventilation, diffusion, and perfusion

Explanation:

Final answer:

The three key principles based on which gas exchange happens in the respiratory system are: partial pressure difference, large surface area for exchange, and effective transportation of gases.

Explanation:

The respiratory system relies on three main principles for gas exchange:

  1. Partial pressure difference: The exchange of gases (oxygen and carbon dioxide) in the lungs happens according to the differences in partial pressures. Oxygen moves from areas of higher to lower partial pressure, enabling it to enter the bloodstream where its pressure is lower.
  2. Surface area for exchange: The structure of the lung surface, specifically the alveoli, provides a large surface area for effective gas exchange.
  3. Transport of gases: Gases like oxygen and carbon dioxide are carried in the bloodstream. Oxygen is primarily carried attached to hemoglobin in red blood cells, while carbon dioxide is primarily transported in plasma as bicarbonate ions.

Learn more about Gas Exchange in Respiratory System here:

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Which statement is true? Lipids are a type of fat. Fats are a type of lipid. Fats and lipids are separate and unrelated substances. All lipids are fats, and all fats are lipids.

Answers

The correct answer is the second option: Fats are a type of lipid. The first option is incorrect, because lipids are the larger, overarching group that fats fall under. The third option is incorrect because fats and lipids are completely related, as displayed by the correct answer. Fats are a specific type of lipid. The last option is incorrect. Although all fats are lipids, all lipids are not fats. Lipids also comprise waxes, phospholipids, sterols, etc.

Final answer:

Among the provided options, the accurate statement is 'Fats are a type of lipid'. Lipids encompass a wider class of molecules which includes fats among others. Therefore, while all fats are lipids, not all lipids are fats.

Explanation:

The correct statement among the options is, 'Fats are a type of lipid'. Lipids are a broad group of naturally occurring molecules which include fats, waxes, sterols, fat-soluble vitamins, monoglycerides, diglycerides, triglycerides, phospholipids, and others. The main biological functions of lipids include storing energy, signaling, and acting as structural components of cell membranes. Fats, on the other hand, are a subclass of lipids, known as triglycerides. So, not all lipids are fats, but all fats are lipids.

Learn more about Lipids and Fats

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Answers

epithelial, connective, muscular and nervous

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Answers

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How are triglycerides, phospholipids, and steroids similar? How do they differ?

Answers

Triglycerides are made up of 3 fatty acids and glycerol with ester linkages.

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A researcher is collecting qualitative data pertaining to social behaviors of deer at different times of the day. How will she most likely need to organize this data?

Answers

A qualitative data is a data that cannot be quantified: for example gender, food preference and country. You can't measure the average, but you can measure the frequency of the data.

How she will organize it depends on the specific data, but in some cases (e.g.: food preference, party preference,favourite class) a pie chart might be a good idea.
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