Explanation:
plant cells have cell membrane and cell wall while animal cells only have the cell membrane missing the cell wall
Answer:
The correct answer is osmosis.
Explanation:
Osmosis is one of the most significant membrane transport process which belongs to the family of passive transport .
osmosis helps in the transport of water molecules from the high water concentration region to the low water concentration region in in presence of a semi permeable membrane until the water concentration in both sides become equal.
It is true . the answer is true
Answer:
A) one intermediate band
Explanation:
Meselson & Stahl experiment on the E.coli bacteria to identify the mechanism of replication in bacteria.
For this, they grew bacteria in a heavy isotope of the nitrogen ¹⁵N which allowed the bacteria to take ¹⁵N in their DNA. They then grew the bacteria into ¹⁴N which allowed the bacteria now to take ¹⁴N in their DNA.
When they allowed the bacterial population to replicate their genome for one generation they found that their genome contained both types of isotopes of nitrogen in their DNA through centrifugation.
Since after the centrifugation only one band was observed which contains both the form of the nitrogen, therefore, the band was called intermediate band with intermediate density.
Thus, Option-A is the correct answer.
