Design an experiment to produce Gold nanoparticles by bacteria. Why the ureolytic bacteria use urea? And why they produce CaCO3?

Rhodopseudomonas capsulata produce gold nanoparticles.

Explanation:

The bacteria named Rhodopseudomonas capsulata has the ability to successfully produce gold nanoparticles which is ecofriendly means not adversely affected the environment. Ureolytic bacteria use urea for the production of Adenosine triphosphate (ATP)  with the use of enzyme ATP-synthase and produce calcium carbonate when the calcium ions are available in excess amount.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

i thinking chemical change