Nonpolar and small polar moleculescan pass through the cell membrane, so they diffuse across it in response to concentration gradients. Carbon dioxide and oxygen are two molecules that undergo this simple diffusion through the membrane. The simple diffusion of water is known as osmosis.
Answer:
C
Explanation:
To send signals to the blood vessels to constrict or dilate , to increase or decrease blood flow respectively.
"The predominant ingredient of the inorganic matrix of bone is calcium salts, with the majority existing as large molecules of hydroxyapatite crystals" is TRUE.
<u>Option: A</u>
<u>Explanation:</u>
- A significant element of normal bone and teeth and an essential ingredient.
- Hydroxyapatite compensates the mineral bone and teeth matrix.
- It is hydroxyapatite which brings its stiffness to bones and teeth.
- The inflammation triggered by crystals with hydroxyapatite was referred to as crystal disease with hydroxyapatite.
- Hydroxyapatite, also termed hydroxylapatite, is a found naturally in calcium apatite mineral type.
- A well-recognized unexplained etiological systemic problem named as "Hydroxyapatite crystal deposition disease (HADD)" has been caused by para-articular and/or intra-articular HA crystal deposition.
