What newly identified organism has been discovered to live on our skin
a. Methanobacterium
b. Staphylococcus
c. Nanoarchaeum
d. Thaumarchaeota
e. Ignicoccus
Answer: d. Thaumarchaeota
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How do fungi in the soil of rain forests encourage plant diversity?
A. By serving as pathogens for particular plant species, fungi encourage plant diversity. B. By serving as pollinators, fungi introduce plant diversity into new regions. C. By forming mycorrizhae with plants, fungi introduce plant diversity into new regions.
The algal ancestors of land plants are most likely similar to the ____
a. Rhodophyta b. Phaeophyta c. Chrysophyta d. Charophyta e. Radiolaria
Which of the following maintains the corpus luteum and stimulates it to continue to produce the hormone progesterone?
A) human chorionic gonadotropin B) progesterone C) estrogen D) testosterone
According to the graph in the accompanying figure, chlorophyll absorbs light most strongly in what region of the electromagnetic spectrum?
a. UV and red wavelengths
b. red and blue wavelengths
c. blue and green wavelengths
d. green and yellow wavelengths
e. UV and infrared wavelengths