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nikklg [1K]
2 years ago
12

I need help with this...​

Biology
1 answer:
dalvyx [7]2 years ago
5 0
The answer is B,I’m not sure tho sorry
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Parathyroid hormone is the major regulator of the plasma concentration of__________ ions
photoshop1234 [79]

Answer:

Calcium

Explanation:

Parathyroid hormone (PTH) is a hormone that is secreted by the parathyroid gland. It is the major regulator of the plasma concentration of calcium ions. It regulates calcium ions in the kidney, intestine and bones.

In the kidney, is involved in the re-absorption of calcium in distal ducts and the renal collecting duct, it is also involved in activating the conversion of 25-hydroxy vitamin D into 1,25-dihydroxy vitamin D (calcitriol).

In the intestine,  PTH is involved in the absorption of calcium, by increasing vitamin D production.

In the bone, it helps in regulating calcium levels; when serum calcium level is low, PTH stimulates the activity of the osteoclast, to produce more calcium.

4 0
3 years ago
A recent increase in pesticide use has resulted in a decrease in the local bat population. What is the BEST explanation for the
yulyashka [42]

Answer: 1. (A bat food supply decreased.)

Explanation:

7 0
2 years ago
Gle
kari74 [83]
B.



Just b

That’s it it’s b
3 0
3 years ago
PLEASE HELP ME ASAP
kati45 [8]

The only reasonable answer I can see is

D. Ectothermic animals need the warmth before they can move around to hunt food.

4 0
3 years ago
g The pH of the space between the inner and outer mitochondrial membrane is ______________ the pH of the mitochondrial matrix.
AURORKA [14]

Answer:

lower than

Explanation:

The protons obtained from the spit of  hydrogen atoms, to protons and electrons, (which was transported to the Matrix of the mitochondria by NADH and FADH2 ) are pumped by PMF into the intramembrane space.

The constant pumps by the PMF,due to the electron transport chains set up high concentration of Hydrogen ions in the intramembrane space.If pH is -log[H+] then the high the number of H+/protons,the stronger  the acidity,and lower the pH  of the medium.

This set up higher electrochemical gradient compare to the matrix.Thus H+ diffuses down the gradients into the matrix.

This generate energy needed for the synthesis of ATPs by ATPase synthase in the matrix

4 0
3 years ago
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