A hypothesis is
a. a statement of fact.
b. often expressed negatively.
c. a form of critical thinking.
d. a testable prediction.
e. none of these.
Answer: d
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Which of these is/are necessary for PCR?
A. template DNA B. DNA polymerase C. the four DNA nucleotides D. DNA primers E. All of the pieces listed are necessary for PCR.
The two strands of a DNA double helix are said to be antiparallel. This means that ____
a. the 5' end of one strand is directly paired with the 5' end of the other strand b. since the double helix twists, it is not perfectly parallel c. one strand has a negative charge and the other strand has a positive charge
d. the 5' end of one strand is directly paired with the 3' end of the other strand e. both strands have a negative charge
Bone marrow is part of the lymphatic system
Indicate whether the statement is true or false
You find an organism that possesses many bristles and parapodia that it uses to burrow. What is it most likely to be?
A. Millipede B. Tapeworm C. Polychaete D. Hookworm E. Flatworm