Which of the following are fetal membranes? (Check all that apply.)
_____ chorion
_____ endometrium
_____ allantois
_____ amnion
_____ yolk sac
__X__ chorion
_____ endometrium
__X__ allantois
__X__ amnion
__X__ yolk sac
Biology & Microbiology
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Why does Archaeoglobus represent a metabolically transitional type of organism that bridges the energy-generating processes of H2S production and methanogenesis?
What will be an ideal response?
Biology & Microbiology
No asteroids have orbits that cross the Earth's orbit
a. True b. False Indicate whether the statement is true or false
Biology & Microbiology
Coastal upwelling is a common source of nutrients in the open ocean
Indicate whether the statement is true or false
Biology & Microbiology
Which level of organization is common to all life forms?
A. tissue B. cell C. colony D. organ E. organelle
Biology & Microbiology