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RUDIKE [14]
2 years ago
13

Can the shape of globin change ?

Biology
1 answer:
marissa [1.9K]2 years ago
7 0

Answer:

People with the sickle cell mutation in both copies of the HBB gene produce proteins that clump together and lead to changes in the shape and behavior of red blood cells.

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Describe how biogeographical studies, esp. of islands and continents, explain species similarities and differences
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5 0
3 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.

5 0
3 years ago
Complete the following sentences to describe the stages of the lytic cycle of viruses. Then, place the stages in chronological o
ddd [48]

Answer:

1. During the__ Attachment ____stage, enzymes digest cell wall and membrane material so that the viral nucleic acids can enter into the host cell.

2. During the ___ Penetration __ stage, the capsid of virus combines with receptors on the host cell's plasma membrane.  

3. During the__ Biosynthesis ____stage, viral nucleic acids and capsid components are produced.

4. During the ___ Release __ stage, lysozyme enzyme is produced, is rupturing the cell membrane and releasing viral particles.  

5. During the___ Maturation ___stage, viral nucleic acids and capsid components are assembled to produce viral particles.

Explanation:

I have attached picture explanation whole lytic cycle.

6 0
3 years ago
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