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alukav5142 [94]
3 years ago
11

Help, can someone please check my answers for my three questions? I will fan and will also give a medal.

Biology
2 answers:
Black_prince [1.1K]3 years ago
6 0
"<span>Specialized cells in the epidermis produce the dark pigment known as melanin</span>" would be something that an anatomist would claim because it is something macroscopic. The rest of the options deal with concepts that happen at the cellular or molecular level (a molecular biologist would tackle them).
Wittaler [7]3 years ago
6 0

Answer: The correct answer is A) Blood is made up of cells suspended in a fluid extracellular matrix.

Explanation: Trust me, I just chose this answer and got it right.

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Answer:

The resting membrane potential is created and maintained due to the difference in the total charge or ions present outside and inside of the cell. The resting membrane potential depolarize if sodium come in and and potassium leaves the cell.

Explanation:

The resting membrane is maintained and created by the distribution of potassium and sodium ions. The membrane potential of a resting cell is -70mV (negative) because more sodium ions is present outside the cell than the potassium ions present inside the cell.

When the sodium ions enter inside the cell and potassium ions move outside the cell, the inside of the cell becomes more positive as compared to the outside and the membrane potential changes from -70 mV to +30 mV. The cells will depolarize due to the accumulation of sodium ions inside the cell.

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