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Nastasia [14]
3 years ago
12

Please answer these 4 questions.

Biology
2 answers:
ira [324]3 years ago
6 0

Answer:I just did this exact same thing do we go to the same school lol

Explanation:

Elza [17]3 years ago
6 0
1) The environment changed when the mosquitoes went from a high population down to a lower one.
2) It is a short term change in the environment because even though the population was at its lowest in year 5, it increased every year after that.
3) The organism responded to these changes by dying off every year. They started to adapt to the pesticides after a couple of years.
4) Future populations of mosquitoes will be immune to the pesticides that they used. Scientists will have to create a new one for the new generation.
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Chloride ions, Cl-, follow actively transported Na+ ions from the nephrons into the blood. Would you not expect the Cl- concentr
DerKrebs [107]

Answer:

Bicarbonate ion, HCO3- (which has a similar charge to chloride ions) also follow sodium ions into the blood. Also, potassium ions, K+ are transported into the nephron so some chloride ions and bicarbonate ions remains in the nephron to balance the charge.

Explanation:

Sodium is the primary positively charged electrolyte in extracellular fluid. Most of the solute reabsorbed in the proximal tubule is in the form of sodium bicarbonate and sodium chloride. Water is also reabsorbed in order to balance osmotic pressure

When sodium ions are reabsorbed into the blood, few of the substances that are transported with Na+ on the membrane facing the lumen of the tubules include Cl- ions, Ca2+ ions, amino acids, and glucose. Sodium is actively exchanged for K+ using ATP on the basal membrane.

In the distal convoluted tubule, K+ and H+ ions are selectively secreted into the filtrate, while Na+, Cl-, and HCO3- ions are reabsorbed to maintain pH and electrolyte balance in the blood.

Some chloride ions remains in the nephron to balance the charge of the secreted K+ ions and also due to the bicarbonate ions that are removed.

5 0
3 years ago
Dr. mclear is a scientist studying heredity. she wants to isolate the basic unit for the transmission of heredity, which is a(n)
AlekseyPX
I believe the answer would be gene.
5 0
3 years ago
HELP PLZZZZZZZ GIVEN 20 POINTS <br><br> the first one is to help u with the question
Marizza181 [45]

Answer: Linear would mean in a line, but it seems that all those graphs are just points soo

Explanation:

6 0
2 years ago
Sometimes the shadow of the Earth will fall on the_and produce a_eclipse.
kogti [31]

Answer:

Is this a question?

Explanation:

7 0
3 years ago
Read 2 more answers
Some people have one sickle cell gene and one normal gene. They have few defective cells and no symptoms because the sickle cell
VladimirAG [237]

Answer:

Explanation:During fertilization the embryo receives half of its genetic information from both parents. If one parent is a carrier or sickle cell their genes would be Aa little a being the recessive gene. When mixed with the other parents gene who does not have sickle cell their genes would be AA. When you make a pun net square the results would be AA,AA,Aa,and Aa. Therefore the offspring would have a 50% chance of being a carrier of sickle cell but not having the actual disease

7 0
3 years ago
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