At the completion of oogenesis, ____ are produced
a. male gametes
b. four sperm cells
c. four egg cells
d. one egg cell and three polar bodies
e. haploid spores
d
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Before Mendel, most people would have predicted that a cross of a red rose with a yellow rose would
produce ____. A. all red roses B. all yellow roses C. all orange roses D. about half yellow roses and half red roses E. about three-fourths red roses and one-fourth yellow roses
Which of the following is a false statement about plant secondary metabolites?
A. Some of them can cross the placenta during pregnancy. B. They are too unpredictable to use in pharmaceutical research. C. Some can be used to treat human diseases. D. The activity of certain medicines is due to secondary metabolites. E. Some can be poisonous to humans.
Critically low levels of CD4 lymphocytes are a key diagnostic indicator of (AIDS/MS/SLE)
What will be an ideal response?
Toxoplasmosis includes all the following, except
A. ingesting pseudocysts from contaminated raw or undercooked meat. B. intrauterine infectious are generally mild with very little damage to fetal tissues. C. tachyzoites can cross the placenta. D. immunocompromised patients often develop a fatal, disseminated infection. E. ingesting or inhaling oocysts from infected cats or cat feces.