You have discovered a compound that inhibits the placement of sterols in the plasma membrane. What can you deduce about the efficacy of this drug?
A) This drug may be broadly effective against both prokaryotic and eukaryotic cells.
B) This drug may be broadly effective against eukaryotic cells but may be toxic in human patients.
C) This drug may be broadly effective against prokaryotic cells.
D) This drug may be broadly effective against eukaryotic cells.
E) This drug may be broadly effective against both prokaryotic and eukaryotic cells but may be toxic in human patients.
Answer: B
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Fruits develop from _____
A) microsporangia B) receptacles C) fertilized eggs D) ovaries E) ovules
Which of the following statements regarding detection of shading in plants is not true?
A. Absorption of red light causes phytochrome to shift from its active state to its inactive state. B. Absorption of red light causes phytochrome to shift from its inactive state to its active state. C. Absorption of far-red light causes phytochrome to shift from its active state to its inactive state D. Absorption of red light causes a seed to germinate. E. Phytochrome is slowly shifted from its active state to an inactive state in the dark.
Which of the following allows for the earliest analysis of an embryo for a genetic disease?
1.fetoscopy 2.pre-implantation diagnosis 3.chorionic villus sampling 4.amniocentesis
Hershey and Chase set out to determine what molecule served as the unit of inheritance. They completed a series of experiments in which E. coli was infected by a T2 virus. Which molecular component of the T2 virus actually ended up inside the cell?
A) protein B) RNA C) ribosome D) DNA