Answer the following statements true (T) or false (F)
1.The right ventricle sends blood to the systemic circulation.
2.While arteries are usually full of oxygenated blood, the one major exception is the pulmonary artery.
3.In an open circulatory system, the heart pumps fluid through open-ended vessels into spaces where the fluid bathes the body's cells.
4.If you compared the blood pressure of an insect to that of a mammal, you would expect the pressure to be lower in the insect.
5.The pulmonary vein transports deoxygenated blood from the lungs to the heart.
1.FALSE
2.TRUE
3.TRUE
4.TRUE
5.FALSE
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High BOD values reflect small amounts of degradable organic matter in a sample of wastewater or other material
Indicate whether this statement is TRUE or FALSE.
A single bacterial cell may multiply to form a visible colony
Indicate whether this statement is true or false.
Cells taken from a tumor
A. may be used to grow viruses. B. can be cultivated in vitro indefinitely. C. may be used to grow bacteriophages. D. divide 50 times and then die. E. may be used to grow viruses AND can be cultivated in vitro indefinitely.
Geological evidence indicates that two landmasses, separated by a deep ocean channel, have been moving apart since 45 million years ago. You are studying a group of organisms that has widespread populations on both of the landmasses. Which is the most
likely hypothesis for the group's evolutionary history? A) The group's ancestors were definitely present on the original landmass. B) The group's ancestors cannot have been present on the original landmass. C) If the group's ancestors could not move across the open ocean, it is very likely that they were present on the original landmass. D) The group's ancestors must have independently colonized each of the landmasses from a third location within the past 45 million years.