The kidneys can reabsorb nutrients and make _________ , a molecule that promotes calcium absorption in the digestive tract.

Fill in the blank(s) with the appropriate word(s).


Answer: vitamin D

Biology & Microbiology

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The DNA molecule is most similar functionally to a

a. pair of scissors. b. flashlight battery. c. computer memory chip. d. ballpoint pen. e. craft kit of ceramic tiles.

Biology & Microbiology

Consider a redox reaction between molecules A and B. Molecule A has a redox potential of –100 mV and molecule B has a redox potential of +100 mV

For the transfer of electrons from A to B, is the ?G° positive or negative or zero? Under what conditions will the reverse reaction, transfer of electrons from B to A, occur?

Biology & Microbiology

What was the first forensic application of DNA fingerprinting?

a. proving the innocence of a prisoner convicted of false charges b. confirming the identity of remains thought to be King Richard III c. confirming the biological relationship between a mother and her son d. identifying the source of the Spanish influenza pandemic in 1918

Biology & Microbiology

How many possible orientations are there if a cell has four chromosome pairs?

A. 4 B. 8 C. 16 D. 32 E. It is impossible to determine.

Biology & Microbiology