A is true because they do have a true nucleus or membrane-bound organelles .
Answer:
Number of nucleosomes in
bp is equal to 
Explanation:
For wounding one nucleosome, total length of DNA required is equal to
bp
The length of linker DNA in mammals is equal to
bp
Thus , the total length of DNA that confides between two nucleosome is equal to the sum of wounding length of DNA and the linker length
bp
Thus, in
bp length of DNA, the total number of nucleosomes is equal to 
Thus, number of nucleosomes in
bp is equal to

Every offspring does not look alike they change with the generations
Answer: Single cell organisms dont need a respiratory system because oxygen and carbon-dioxe diffuses between their body tissues and the enviorment.