Xylem is able to extract water from soil because it is in direct contact with the soil

A. true
B. false


B

Biology & Microbiology

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What happened in Australia when rabbit hemorrhagic disease virus was released to control the rabbit population?

What will be an ideal response?

Biology & Microbiology

Plants in the desert-adapted families Cactacea (cactus) and Euphorbia (euphorbs) share many of the same physical characteristics, such as succulent stems that store water and CAM photosynthesis, but they do not share a recent common ancestor. This evidence suggests that these families are an example of  

A.  convergent evolution. B.  homologous structures. C.  vestigial structures. D.  divergent evolution.

Biology & Microbiology

Dominant

What will be an ideal response?

Biology & Microbiology

Arrange the following electron carriers in the electron transport chain, based on their standard reduction potentials.Cytochroms a3(Fe3+) + e? ? Cytochrome a3 (Fe2+)   Eo (volts) = 0.35Ubiquinone + 2H+ + 2e? ? Ubiquinone H2                  Eo (volts) = 0.10Cytochrome a (Fe3+) + e? ? Cytochrome a (Fe2+)      Eo (volts) = 0.29Cytochrome c (Fe3+) + e? ? Cytochrome c (Fe2+)      Eo (volts) = 0.25

A. cytochrome c - ubiquinone ? cytochrome a ? cytochrome a3 B. cytochrome a3 ? cytochrome a ? cytochrome c ? ubiquinone C. ubiquinone ? cytochrome a ? cytochrome a3 ? cytochrome c D. ubiquinone ? cytochrome c ?  cytochrome a ?  cytochrome a3

Biology & Microbiology