Why is it advisable to perform this test on a known catalase positive organism?

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

Do plant cells perform cellular respiration?

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.