Which hormone is responsible for the development of female secondary sex characteristics?
a. melatonin
b. testosterone
c. progesterone
d. estrogen
e. thymosin
d
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What does an organism need to perform cellular respiration, and what does cellular respiration produce?
What will be an ideal response?
Protons and neutrons are located in the ________ of an atom
Fill in the blank(s) with correct word
Energized electrons from the water-splitting photosystem pass down an electron-transport chain to the ___________-producing photosystem.
a) NADPH b) NADP+ c) carbohydrate d) ATP e) ADP
Four of the statements about malaria are true. Which one is FALSE?
a. It is caused by an evolving organism. b. It is transmitted from person to person by the bite of a mosquito. c. Its mortality rate is linked to the allele for sickle cell anemia. d. Its greatest mortality rate is in Africa. e. Its occurrence in the United States can be traced to ineffective mosquito spraying in the southern states.