Green algae such as Ulva demonstrate an alteration of generations. The diploid phase is called the
a. gametophyte generation.
b. embryo.
c. sporophyte generation.
d. diploid generation.
e. zygote.
C
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Phylogenetic trees show inferred evolutionary relationships in the form of multiple branching lineages connected by nodes.
Answer the following statement true (T) or false (F)
In animals with sex chromosomes, males inherit their X chromosomes from their ______ and transmit them to their _____
A. mothers / daughters B. mothers / sons C. fathers / daughters D. fathers / sons E. mothers / both sons and daughters
While shopping at your local drugstore, you stop at the blood pressure machine. It measures your blood pressure as 115/75 (good—that's healthy!). This number means that
A. arterial pressure is 115 mm Hg when the ventricles contract and 75 mm Hg in between ventricular contractions. B. arterial pressure is 75 mm Hg when the ventricles contract and 115 mm Hg in between ventricular contractions. C. arterial pressure is 115 mm Hg when the atria contract and 75 mm Hg in between atrial contractions. D. your sinoatrial node generates a 115 mV signal and your atrioventricular node generates a 75 mV signal. E. your sinoatrial node generates a 75 mV signal and your atrioventricular node amplifies this to a 75 mV signal.
When is a glucose molecule produced by the Calvin cycle?
a. after three turns, during the Fixation stage b. after six turns, during the Regeneration stage c. after six turns, during the Reduction stage d. after eight turns, during the Fixation stage