Which term refers to uncontrolled growth of white blood cells?
A. hemophilia
B. thromboembolism
C. leukemia
D. thrombocytopenia
E. infectious mononucleosis
Answer: C
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While snowshoeing through the winter woods, you stop to look at a tree branch pictured at the right. Specifically, what are the brown structures hanging from the branch?
What will be an ideal response?
Which of the following alternate forms of nucleic acids are not known to be biologically important?
A. G tetraplex structures can form and act as recognition sites for enzymes that cleave DNA. B. Inverted repeats can form hairpins that are important for slowing or preventing protein synthesis. C. Palindromic sequences can act as recognition sites for enzymes that cleave DNA. D. Sequence-induced bending of the DNA can act as a binding site for transcription factors. E. Cruciform structures are formed during recombination.
Which color of light has the least important role in photosynthesis?
a. red b. green c. blue d. orange e. yellow
Woodpeckers and squirrels both nest in tree cavities. This is an example of interspecific competition
Indicate whether the statement is true or false