Which of the following is the correct sequence of blood flow in birds and mammals?
A) left ventricle ? aorta ? lungs ? systemic circulation
B) vena cava ? right atrium ? right ventricle ? pulmonary vein
C) pulmonary vein ? left atrium ? left ventricle ? pulmonary circuit
D) vena cava ? right atrium ? right ventricle ? pulmonary artery
E) right atrium ? pulmonary artery ? left atrium ? ventricle
Answer: D
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Select the correct sequence of animal developmental events
a. fertilization ? cleavage ? gastrula ? blastula b. fertilization ? cleavage ? blastula ? gastrula c. fertilization ? blastula ? cleavage ? gastrula d. fertilization ? gastrula ? blastula ? cleavage e. fertilization ? blastula ? gastrula ? cleavage
Ste5 binds to MAPKKK, MAPKK, and MAPK to organize the kinase cascade. What type of signaling molecule is Ste5?
A. Adapter protein B. Scaffold C. Second messenger D. Enzyme
A falsifiable hypothesis cannot be tested
__________________ Indicate whether the statement is true or false.
Which of the following would be correctly classified as a protein?
A) cholesterol B) starch C) an enzyme D) cellulose