C
The respiratory system removes the waste carbon dioxide produced from aerobic respiration in the body.
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

Explanation:
1. cell membranes are partialy permeable, only allowing passage to some certain molecules.
2. diffusion is the movement of molecules across partially permeable membrane down concentration gradient.
3. the molecules are too big to pass through partially permeable membrane. the concentration of the molecule might be higher in the cell than in the solution/surroundings.
Answer:
Bone marrow.
Explanation:
Hematopiesis may be defined as the formation of the blood cells by the precursor stem cells. This process occurs in the bone marrow, thymus and liver.
The red blood cells are enucleated cells with the minimum span of around 120 days. These cells are processed and destroyed in the spleen. The iron is recovered from the red blood cells and sent again into the bone marrow for the production of new blood cells.
Thus, the answer is bone marrow.
Answer: Diagnosis: The presence of nitrites in the urine confirms the urinary tract infection.
Explanation:
Treatment: The urinary tract infection will be concerned with the antibiotic therapy to kill the bacteria producing excess nitrites. Educating K.N. about the risk factors associated with the multiple sex partners and transfer of bacteria through sexual contact.
Use of fluroquinolones and nitrofurantoin:
Fluroquinolones: This is an antibiotic which has bacteriocidal property can be useful in the treatment of urinary tract infections.
Nitrofurantoin: It is an effective antibiotic in killing bacteria it gets activated inside the bacteria.
Nitrituria is a condition in which the nitrites are present in the urine that is indicative of the presence of bacterial infection. It is caused by the <em>E. coli</em> bacteria inside the urinary tract. It is responsible for converting the nitrates into nitrites.