Chapter 12
Biology Concepts and Applications · 6 exercises
Problem 1
Which is not a nucleotide base in DNA? a. adenine b. guanine c. uracil d. thymine e. cytosine f. All are in DNA.
3 step solution
Problem 2
What are the base-pairing rules for DNA? a. \(\mathrm{A}-\mathrm{G}, \mathrm{T}-\mathrm{C}\) b. \(\mathrm{A}-\mathrm{C}, \mathrm{T}-\mathrm{G}\) c. \(A-U, C-G\) d. \(A-T, G-C\)
3 step solution
Problem 3
One species' DNA differs from others in its ____________. a. sugars b. phosphates c. base sequence d. all of the above
4 step solution
Problem 4
When DNA replication begins,_____________. a. the two DNA strands unwind from each other b. the two DNA strands condense for base transfers c. two DNA molecules bond d. old strands move to find new strands
4 step solution
Problem 5
DNA replication requires ____________. a. free nucleotides b. new hydrogen bonds c. many enzymes d. all of the above
4 step solution
Problem 6
Cell differentiation involves ___________. a. cloning b. nuclear transfers c. selective gene expression d. both b and \(c\)
3 step solution