Explain why the process in the kidneys is called "filtration." (What is acting as a "filter"?)

What will be an ideal response?


Blood pressure forces fluids from the blood through the walls of the porous glomerular capillaries into the glomerular capsule.

Biology & Microbiology

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Who provided X-ray diffraction photographs of purified DNA fibers that suggested a helical structure with a consistent diameter of about 2 nm and a complete helical turn every 3.4 nm?  

A.  Hershey and Chase B.  Chargaff C.  Franklin D.  Watson and Crick

Biology & Microbiology

Various modifications in leaves can make plants better adapted to their habitats. Which of the following is not an evolutionary modification of leaves?  

A.  floral leaves B.  fruit-bearing leaves C.  spines D.  reproductive leaves E.  insectivorous leaves

Biology & Microbiology

In eukaryotic cells, transcription and replication occur during of the cell cycle.

A. telophase B. interphase C. prophase D. anaphase E. metaphase

Biology & Microbiology

Compounds with carbonyl groups are known as

A. aldehydes or ketones B. ketones or hydrocarbons C. aldehydes or hydrocarbons D. alcohols or hydrocarbons

Biology & Microbiology