In metabolic processes of cell respiration and photosynthesis, prosthetic groups such as heme and iron-sulfur complexes are encountered in components of the electron transport chain. What do they do?
A) donate electrons
B) act as reducing agents
C) act as oxidizing agents
D) transport protons within the mitochondria and chloroplasts
E) both oxidize and reduce during electron transport
Ans: E) both oxidize and reduce during electron transport
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By 250 mya, the seed plants called ____ were our planet’s dominant flora
a. hepatophytes b. lycophytes c. bryophytes d. angiosperms e. gymnosperms
The word gymnosperm means ____
a. covered seed b. active sperm c. naked egg d. naked seed e. covered sperm
The emergent property of “life” appears at the level of the ____, when many molecules become organized
a. population b. atom c. organism d. cell e. community
One of the functions of the skeletal system is the storage of ________ and ________
Fill in the blank(s) with correct word