The _____ are the genetic material in a cell
A) chloroplasts
B) centrioles
C) lysosomes
D) chromosomes
D
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A deuteron is captured by an oxygen-16 atom which in turn emits a proton. What is the element and mass number of the product isotope?
a. oxygen-15 c. nitrogen-15 b. fluorine-15 d. oxygen-17
In an experiment, the experimental group is:
a. not subjected to experimental error b. not exposed to experimental treatments c. maintained under strict laboratory conditions d. treated exactly the same as the control group, except for one independent variable e. statistically the most important part of the experiment
The absolute pressure is
a. the gauge pressure plus 1 atmosphere. b. the gauge pressure plus the atmospheric pressure. c. the gauge pressure minus the atmospheric pressure. d. the atmospheric pressure plus 14.7 psi.
A long solenoid with closely spaced turns carries electric current. Each turn of wire exerts:
1.an attractive force on the next adjacent turn. 2.a repulsive force on the next adjacent turn. 3.zero force on the next adjacent turn. 4.either an attractive or a repulsive force on the next turn, depending on the direction of current in the solenoid.