From which of the following fish are the amphibians thought to have evolved?
a) Class Myxini
b) Class Actinopterygii
c) Class Sarcopterygii
d) Class Chondrichthyes
e) Class Cephalaspidomorphi
Answer: c) Class Sarcopterygii
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Which of the following is a component of a plasma membrane?
a. nucleic acids b. glyconucleotides c. glycolipids d. amino acids
What is the approximate maximum rate of respiration that scorpions exhibit?
a. Around 12 microliters of CO2 per minute/gram of scorpion weight. b. Around 22 microliters of CO2 per minute/gram of scorpion weight. c. They do not exhibit a maximum rate.
Which of the following statements is false?
A) All organisms consist of one or more cells. B) All cells arise from preexisting cells. C) The cell is the basic unit of structure for all organisms. D) All cells have a membrane-bound nucleus. E) Cells come in a wide variety of sizes and shapes.
What is the basic shape of a tRNA molecule?
A) A three-dimensional cloverleaf B) A straight strand C) A right-handed helix D) A globular ball E) A ?-pleated sheet