Explain why creatinine is used as a marker of kidney function

What will be an ideal response?


Answer: Creatinine is a muscle breakdown product, produced at a relatively constant rate, that is filtered but not reabsorbed by the kidney. A rise in the blood may indicate that the kidneys are not filtering as much blood as they used to.

Biology & Microbiology

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During electron transport reactions,

A) OH- accumulates on the outside of the membrane while H+ accumulates on the inside. B) OH- accumulates on the inside of the membrane while H+ accumulates on the outside. C) both OH- and H+ accumulate on the inside of the membrane. D) both OH- and H+ accumulate on the outside of the membrane.

Biology & Microbiology

Tuberculosis remains a serious worldwide health problem due to all of the following except  

A.  multi-drug resistance. B.  social factors such as crowding and incarceration. C.  the prevalence of HIV infections. D.  ease of transmission. E.  absence of MDR strains.

Biology & Microbiology

What is the most assured method of identifying an individual?

a. full genome sequencing b. short tandem repeat analysis c. SNP-chip analysis d. DNA-DNA hybridization e. PCR amplification

Biology & Microbiology

What would you predict about the presence of Hox genes in the last common ancestor of vertebrates and invertebrates? (Select all that apply)

A. The genes specified anterior-posterior development. B. If mutated, there would be an extra pair of wings and legs growing from the head. C. The genes contained a MADS-box. D. That ancient ancestor was too primitive to have Hox genes. E. The genes were in four clusters. F. The genes were in anterior-posterior order on the chromosome. G. The genes contained homeoboxes.

Biology & Microbiology