Gnetophytes are more closely related to angiosperms than to other gymnosperms
A. true
B. false
B
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Explain why radiation affects cancerous cells to a greater degree than noncancerous cells
What will be an ideal response?
In an inherited form of high cholesterol, rr individuals have a blood cholesterol level greater than 500 mg/dL, Rr individuals are near 300 mg/dL, while normal (RR) cholesterol levels should be less than 200 mg/dL. The R allele is ___ to the r allele. Select one:
a. dominant b. homozygous c. incompletely dominant d. codominant e. recessive
Which group of plants was the first to produce seeds?
A) Bryophytes B) Gymnosperms C) Lycophytes D) Angiosperms E) Chlorophytes
Plant cells release hydrogen ions and oxygen from H2O molecules in ____.
A. photosystem I B. photosystem II C. cyclic photophosphorylation D. the light independent reaction E. carbon fixation