Answer:
The nucleus contains a cell's DNA.
C. They provide instructions for protein synthesis and determine traits.
There is a valve at the meeting point between each ureter and the bladder prevents the back flow of urine from the urinary bladder to the kidney
The process of DNA replication occurs just before S phase. In the interphase, the cell has growth and replication of DNA is getting made. In the G1 phase, there is the growth, (G1-checkpoint - cell size, growth, environment shows cell is ready to start replicating DNA. S phase- DNA is replicated.
food chain. it tells how different organism feed on in a linear way. if we mix more than 2 food chains it will become food web.
