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
D
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Sodium has 11 electrons arranged in three energy levels. In order to become stable, sodium forms an ion with:
A. no charge. B. -1 charge. C. +8 charge. D. +1 charge. E. -8 charge.
In all bryophytes, the sporophyte remains embedded in the thallus
A. true B. false
When a gamete that is lacking a sex chromosome due to nondisjunction has fused with a gamete carrying an X chromosome, this type of abnormality leads to the _________ .
A. Triple X syndrome B. Down Syndrome C. Edward Syndrome D. the Turner syndrome E. Klinefelter Syndrome
The hair cells in the utricle detect
A) subsonic sound vibrations. B) volume and pitch of sounds. C) differences in air pressure waves. D) position of the head with respect to gravity.