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2 years ago

Emperor penguins huddle together during the Antarctic winter months. Once a penguin reaches the interior of the huddle he

1 answer:

6 0

Emperor Penguins huddle together during the winter without eating - they have eaten before the winter and they live of their saved fat during this time - so the answer won't have to do with food. The correct answer is B) - they move back to the exterior (or are pushed by other penguins) - only like this can all the penguins survive the winter, by cooperation, rather than being selfish.

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2 years ago

Does granite form crystals

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What did the structure of DNA’s double helix suggest about DNA’s properties? Select all that apply.

givi [52]

Completed part of the questionErrors in copying can result in changes in the DNA sequence that could be inherited by future generation.

Answer:

DNA stores genetic information in the sequence of its bases

DNA can be replicated by making complementary copies of each strand

Errors in copying can result in changes in the DNA sequence that could be inherited by future generation.

Explanation:

the fact that DNA is located in the Nucleus is not related to double strands.

the DNA csn change is not relevant ,

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2 years ago

Which patient situation indicates that a patient might be experiencing an increase in his perception of pain

saveliy_v [14]

Answer:

Explanation:

There are some signs and symptoms that a person may exhibit if they are in pain that can clue you in:

Facial grimacing or a frown.

Writhing or constant shifting in bed.

Moaning, groaning, or whimpering.

Restlessness and agitation.

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2 years ago

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.

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2 years ago