Which phylum contains the ferns?
a. Anthocerophyta
b. Bryophyta
c. Pterophyta
d. Hepatophyta
Ans: c. Pterophyta
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Myoglobin supplies ____ to fuel muscle activity
a. oxygen for aerobic respiration b. phosphate for ATP formation c. direct energy for white muscle fiber contraction d. glucose for lactate fermentation e. glucose for aerobic respiration
Which of the following is the correct operational
sequence in the molecular mechanisms of cell-to-cell communication? I. signal transduction II. receptor activation III. functional response a. I >>> II >>> III b. II >>> I >>> III c. III >>> I >>> II d. II >>> III >>> I e. I >>> III >>> II
The worldwide spread of ________ resulted in a pandemic between 1918 and 1919 that claimed 20 to 150 million lives
a. Haemophilus influenzae b. influenza virus c. Streptococcus pneumoniae d. Yersinia pestis
Which reproductive consequence is possible for a man who has a 13;15 Robertsonian translocation when his wife has a normal karyotype?
A. He is unlikely to ever impregnate his wife. B. Because his wife has normal karyotype, there are no reproductive consequences. C. He has an increased risk for having a child born with either trisomy 13 or trisomy 15. D. He has an increased risk for having a child born with either monosomy 13 or monosomy 15.