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frutty [35]
3 years ago
8

When heating a liquid in a test tube, a student should always

Biology
1 answer:
Elena-2011 [213]3 years ago
3 0

Answer:

the answer is always wear safety goggles

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Animal cells are placed in an isotonic solution. THEN, additional amounts of solute are added to the solution. What happens to t
Nitella [24]

Answer:

The animal cell will shrink due to loss of water to the external solution

Explanation:

An isotonic solution is that solution which has equal concentration with its external environment. Hence, no net movement of water occurs in an isotonic solution since there is no concentration gradient. Therefore, if an animal cell is placed in an isotonic solution at first, no net movement of water occurs because the intracellular and extracellular concentrations are at equilibrium.

However, if more solutes are added to the solution, it makes the solution HYPERTONIC to the cell i.e greater in concentration. This creates an osmotic gradient and causes water to move out of the animal cell into the solution in accordance to osmotic principles (movement of water from a low concentration of solute to high concentration of solute). This causes the animal cell to likely SHRINK.

3 0
2 years ago
Explain how the information from stimuli can become a memory or result in a behavior. WILL GIVE BRAINLIEST IF CORRECT!!!!!!!!!!!
Dmitry_Shevchenko [17]

Answer: look at the picture

Explanation: Hope this help :D

6 0
2 years ago
To help explain surface tension, use a single water molecule in the template, and draw arrows representing the possible location
kramer

Answer:

The correct representation is attached with the explanation.

Explanation:

In this representation of the surface tension, blue arrows between green water molecules are the possible molecules that can be used as the location for forming hydrogen bonds by a single molecule. Surface tension is the tendency of a liquid surface strectch to neighbouring molecules or ability to shrink in minimum surface area possible. Hydrogen bonds is an intermolecular force or interaction responsible for the surface are of liquide molecules. This bonds is towards every direction where the similar molecule present.

3 0
3 years ago
What are two functions of cell surface markers?
svetlana [45]
There are 2 functions for cell surface markers. The first is to recognize the outside cell. The second is to allow the cell to bind to substances outside the cell. Cell surface markers are proteins expressed on the surface of cells that often conveniently serve as markers of specific cell types. There are different types of cell surface markers. These markers are vital for the human body to function. These markers also vitally affect the functions of other biological systems of other organisms and creatures such as animals.
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The tidal zones in which the barnacles balanus and chthamalus thrive when both species are present illustrate the principle of
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Competitive exclusion
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