Answer: 1,2,3
Explanation:
1. One of the major function of the kidney is to excrete metabolic waste. When the blood is perfused through the Bowman's capsule, an ultrafiltrate of the blood is produced in the glomerulus, the filtrate in Bowman's capsule contains salt, glucose, amino acids, nitrogenous waste, etc while the cells and proteins are retained in the blood. The waste are excreted as urine or uric acid.
2. One of the function of the renal tubule is to maintain fluid and electrolytes balance. When the glomerulus filtrate is formed, it contains almost all the crystalloids of plasma which includes water, Na+, Cl-, glucose, amino acid and K+. The renal tubule reabsorb water and solute to the blood to maintain water and electrolytes balance.
3. The kidney secrete a hormone Renin, which control other hormones angiotensin and aldosterone that helps to control blood pressure.
I actually think that as people progress through middle adulthood, they experience Senescence (primary aging) in the form of molecular and cellular changes in the body. In this process cells irreversibly stop dividing and enter a state of permanent growth arrest without cell death. The process plays roles in normal development, maintains tissue homeostasis, and limits tumor progression.
I think it should be A, not 100% sure tho
Recognize the errors in our own ideas
This is a point mutation.
