In a plant cell, DNA may be found _____
A) only in the nucleus
B) only in the nucleus and chloroplasts
C) in the nucleus, mitochondria, and chloroplasts
D) in the nucleus, mitochondria, chloroplasts, and peroxisomes
C
You might also like to view...
Histology is the study of
(a) cells. (b) organelles. (c) tissues. (d) organisms.
Which of the following is an application of transposon tagging?
A. To test if a transposon is replicative B. As a tool to clone novel genes C. To track the movement of transposons between species D. To inactivate transposons in a genome
The age of a fossil can often be determined using radiometric dating of the rocks in which the fossil is found. Because uranium-238 has a half-life of 4.5 billion years, it means that:
A. when it is 9 billion years old, a rock will have no uranium-238 remaining. B. when the earth is 9 billion years old, no uranium-238 will exist. C. a uranium-containing rock that is 4.5 billion years old would, today, have only about half as much of its uranium in the form of radioactive uranium-238 as a rock that was just recently formed. D. uranium-238 cannot be used to establish the age of fossils greater than 4.5 billion years old.
The number of hosts in the life cycle of a tapeworm is
A. one. B. two. C. three. D. different for different types of tapeworms.