Where does the ovule meet the sperm that fertilizes it?
A. In the uterus
B. In the oviduct
C. In the ovary
D. In the vagina
Answer: B
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Explain why the discovery of iron-oxidizing phototrophs has important implications for both understanding the evolution of photosynthesis and explaining the large deposits of ferric iron (Fe3+) found in ancient sediments on Earth
What will be an ideal response?
Microorganisms in the human colon are more often being described as mutualistic with human hosts rather than commensalistic. Why has this change in the definition of a symbiotic relationship occurred?
A. As we learn more about the ecology of the human microbiome, we have learned that these organisms are dependent on the nutrients that we provide for their survival. B. As we learn more about the ecology of the human microbiome, we recognize our dependence on these organisms for immunity, vitamin production, and other essential processes. C. As we learn more about the makeup of the human digestive tract, we realize that some microorganisms are potentially pathogenic while others are not. D. All of the choices are correct.
The human temperature set point typically ____
a. ranges from about 96.0?F to about 99.9?F b. stays right at about 98.6?F c. stays right at about 96.8?F d. ranges from about 98.0?F to about 99.5?F e. ranges from about 94.0?F to about 99.0?F
Among subatomic particles, each _______ has a charge of +1 each _________ has a charge of -1, and each ________ has no charge
Fill in the blank(s) with correct word