All of the following are classified in the Homo genus except
A) Neanderthals.
B) modern humans.
C) Orrorin tugenensis.
D) Otzi.
C) Orrorin tugenensis.
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In what way are all amino acids similar?
a. They all have an amino group. b. They all have a carboxyl group. c. They all have a distinctive side chain. d. All of the above.
Which of the following is an example of an energy-requiring reaction?
a. The combustion of the gas in your car to move it forward. b. The burning of a log to generate heat. c. The synthesis of carbon dioxide into glucose.
d. The oxidation of metal to form rust. e. The metabolism of glucose to form ATP.
The use of a molecular clock
A. depends on nucleic acid changes being neutral and not tied to adaptation. B. depends on nucleic acid changes occurring at a fairly constant rate. C. still needs to be calibrated with the fossil record. D. All of the choices are correct.
Reproductive systems with external fertilization are most common in
A) terrestrial animals. B) populations with many more males than females. C) animals that are widely dispersed. D) aquatic animals.