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drek231 [11]
3 years ago
11

HELP ASAP!!!!!!! PLEASE WILL GIVE BRAINLIEST

Physics
1 answer:
Eva8 [605]3 years ago
7 0

Answer: The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse. If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells. Semipermeable membrane describes a membrane that allows some particles to pass through (by size), whereas the selectively permeable membrane "chooses" what passes through (size is not a factor). Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment. For example, water, ions, glucose and carbon dioxide may need to be imported or exported from the cell depending on its metabolic activity. Similarly, signaling molecules may need to enter the cell and proteins may need to be released into the extracellular matrix. The presence of a selectively permeable membrane allows the cell to exercise control over the quantum, timing and rate of movement of these molecules.

Explanation: hope this helps you with your work/assingment! Have a wonderful day/night!

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Which part of the manufacturing process involves heating and rolling blocks of steel into flat sheets and bars?
faltersainse [42]

A. Forming

Explanation:

Metal forming is a metallurgical process which involves heating and rolling blocks of steel into flat sheets and bars.

Metal forming is the process of working metals and utilizing its properties to form different shapes.

  • Metal forming is made possible by metallic bonds in metals.
  • The bulk of the physical properties of metals can be attributed to these bond types.
  • In metal forming, metals are shaped into different substances.
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Learn more:

Metals brainly.com/question/9053565

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8 0
4 years ago
Mechanical (sound) waves are unable to travel through a vacuum, such as through space, but radio waves are transmitted to Earth
hichkok12 [17]
There is no medium for the sound waves to travel through
3 0
3 years ago
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Which statement is true about the part of the electromagnetic spectrum that human eyes can detect?
LUCKY_DIMON [66]
Your answer is B. The human eye can only detect color and Tv waves
7 0
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Un libro del peso di 12 N è in equilibrio su un tavolo. Sapendo che il coefficiente di attrito statico vale 0,5, la forza di att
Tanzania [10]

Answer:

60

Explanation:

Translation -

A book weighing 12 N is balanced on a table. Knowing that the static friction coefficient is 0.5, how much is the friction force worth?

Friction force is

f = u * n

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4 0
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What makes gravity work
olganol [36]
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So whichever concept you prefer it's the presence of mass that creates gravity.
7 0
4 years ago
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