The function of myoglobin in muscle cells is to _____________

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


Answer: deliver oxygen to mitochondria

Biology & Microbiology

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Which of the following is NOT involved in the formation of blood clots?

a. platelt congregation at the site of rupture of a blood vessel b. release of clotting factors from platelets c. production of fibrin, a protein d. formation of fibrin-red blood cell complexes that circulate in the blood and are too large to move though ruptured blood vessel walls

Biology & Microbiology

The evolution of saber teeth in a number of groups of extinct carnivorous mammals is an example of

A. homoplasy caused by common descent. B. homoplasy caused by convergence. C. homology caused by common descent. D. homoplasy caused by evolutionary reversal. E. homology caused by convergence.

Biology & Microbiology

Plants require a lot of water for transpiration, metabolism, and photosynthesis.  How is water used in photosynthesis?

A. as a substrate for ATP synthase B. to combine with NADP+ to form NADPH C. to combine with ADP forming ATP D. as an electron donor E. as an electron acceptor

Biology & Microbiology

Blood samples are taken from the heel of newborn babies to test for a mutation in the PKU gene, which, if left untreated and in severe cases, can lead to mental retardation, reduced skin pigmentation, and seizures. Which concept is being illustrated by

this example? A) incomplete dominance B) polygenic inheritance C) pleiotropy D) codominance

Biology & Microbiology