All living cells arise from pre existing cells.
Answer:
(3) 4 cm' and 2.0 g/cm3
Explanation:
Given:
volume= V= 8 cm³
mass= m= 16 g
The density is the mass per volume of a substance, so the density of the rock is:
density= d= 16 g/8 cm³= 2 g/cm³
When we cut the rock in half, we have a half volume and a half mass:
V= 8 cm³/2= 4 cm³
m= 16 g/2= 8 g
But the density is not altered because it is an intrisic property - it does not change with the amount of subtance. Thus, the density of a half rock is:
d = m/V= 8 g/4 cm³= 2 g/cm³
Answer:
The correct answer will be option-D
Explanation:
Apoptosis is the process which leads to the death of the cell which is programmed and thus is known as the programmed cell death.
The death of a cell takes place when the cell experiences the lack of survival signals either due to the need to kill the cell or some genetic defects in DNA contained in cells.
The cell which undergoes apoptosis process can be easily marked by their shape as it gets shrunk, the cytoskeleton of the cell collapses, irregular bulges called blebs and the disassembly of the nuclear envelope.
Since the cell shrinks instead of swelling, therefore, option-D is the correct answer
