3 years ago

Why is diffusion important to cells

2 answers:

8 0

Diffusion is important to organisms because it is the process by which useful molecules enter the body cellsand waste products are removed. Digested food molecules (amino acids, glucose) move down a concentration gradient from the intestine to the blood.

Shkiper50 [21]3 years ago

3 0

The answer is C it exchanges gases such as oxygen and carbon dioxide and take in particles of food water and minerals

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As a persons ages his or her bones tend to become brittle. This happens as ______ is lost from bone

GREYUIT [131]

Answer:

Explanation: the bones can becomew brittle from not haveing calcium

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3 years ago

What is the pH if 20 mL of pH = 2 solution is diluted to a final volume of 600 mL?

Mashutka [201]

Explanation:

Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge. pH measures how basic or acidic a water-based solutions are, with a formula for pH is

pH = -log[H+].

...where pH is -base 10 log of the concentration of hydrogen ions within the solution.

Initial volume= 20 mL

Final volume= 600 mL

# of dilutions= $\frac{600}{20}$ = 30