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Y_Kistochka [10]
3 years ago
12

Regulating transport of substances in and out of the cell is the

Biology
1 answer:
uysha [10]3 years ago
4 0

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

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which molecule involved in protein synthesis was mentioned in our molecule selves but not in your DNA at work ?
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Answer:

tRNA

Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein. tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule.

7 0
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What happens in humans? internal vs external
Maslowich

Answer:

internal

Explanation:

5 0
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The hydrogen ion concentration of a solution is indicated by its<br> ___ value.
rosijanka [135]

The hydrogen ion concentration of a solution is indicated by its <u>pH </u>value.

Explanation:

  • A measure of acidity or alkalinity of water soluble substances (pH stands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle point.
  • Under normal circumstances this means that the concentration of hydrogen ions in acidic solution can be taken to be equal to the concentration of the acid.
  • The pH is then equal to minus the logarithm of the concentration value.
  • Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
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  • Pure water dissociates slightly into equal concentrations of hydrogen and hydroxyl (OH−) ions. For a neutral solution, [H+] is 10−7, or pH = 7.
6 0
3 years ago
What is different about normal cell division and cancer cell division?
Alex17521 [72]

Your body constantly produces new cells. Normal cells follow a typical cycle: They grow, divide and die. Cancer cells, on the other hand, don't follow this cycle. Instead of dying, they multiply and continue to reproduce other abnormal cells.

6 0
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Urine culture and sensitivity is a laboratory test used to identify the cause of a urinary tract infection true or false
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True. This is because in the lab they can determine the bacteria that may be causing the UTI.
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