Humans contract bacterial infections such as tuberculosis or syphilis. What is this ecological relationship called?
A) Resource partitioning
B) Predation
C) Mutualism
D) Parasitism
E) Competition
D
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The Ecdysozoa include (select all that apply)
A. annelid worms B. mollulsks C. sea anemones D. arthropods E. vertebrates
Prokaryotes ____
a. have a nucleus b. are multicellular c. always have cell walls d. are either bacteria or archaeans e. always have flagella
Which prokaryotic nutritional groups uses CO2 and sunlight to produce energy?
a. photoautotrophs b. chemoautotrophs c. photoheterotrophs d. chemoheterotrophs e. methanoheterotrophs
Which of the following is false about plant
hormones? a. They bind to receptors on target cells. b. Their mechanism of action is completely different from that of animal hormones. c. Signal transduction may influence a metabolic pathway. d. The plant response may depend on a change in gene expression. e. Signal transduction may involve shape change by a receptor.