The best answer is A
Saltwater fish are hypotonic to their surroundings. This means their blood has a higher water concentration than the surrounding sea water.
Due to the fact that there is more salt and less water outside their bodies, there is a tendency to take in salt and lose water.
To counter this, salt water fish drink a lot of the sea water and urinate very little. Special cells in the gills actively eliminate salt at the cost of extra energy and these fishes do not absorb any salt from the water they drink.
Answer:
No, eukaryotic cells cannot live without mitochondria and chloroplasts; they provide the energy cells need to survive.
Explanation:
It is not possible today for a eukaryotic cell to live without mitochondria or chloroplasts since these are the organelles responsible for providing the energy cells need to survive.
Mitochondria are the organelles that synthesize energy in cells. Chloroplasts are the organelles that contain chlorophyll and where photosynthesis takes place in a cell.
Answer: Endoplasmic Reticulum
Explanation:
The Endoplasmic Reticulum is a network of interconnecting membrane enclosing channels that are continuous from outer outer nuclear envelope to plasma membrane. ER is classified into rough and smooth varieties.
The ER is very prominent in the cell activity synthesizing proteins e.g glycoproteins, lipoproteins and immunoglobins
Answer:
The correct answer is C. heterozygous.
Hope this helps!
