Which of the following statements about viruses is false?
A diatom's ________ is a glassy cell wall.
frustule
Most marine planktonic viruses are best described as
icosahedral with lytic life cycles.
Which of the following represents the correct steps in nitrification?
Ammonia → Ammonium → Nitrite → Nitrate
A prokaryotic microbe that is small, can tolerate very high temperatures and high salinities, and produce methane is most likely a member of the ________.
Archaea
Which terrestrial fungus that produces aflatoxins has been recently found in soft coral tissues?
Aspergillus
What is the name for a DNA virus specifically suited for the infestation of bacteria?
Bacteriophage
Which of the following is an orange accessory pigment that absorbs blue light and protects chlorophylls from damage?
Beta-carotene
What method of reproduction do bacteria use?
Binary fission
Which types of bacteria use energy derived from chemical reactions involving inorganic substances such as sulfides and elemental sulfur rather than sunlight?
Chemosynthetic bacteria
Which of the following is an example of a haptophyte?
Coccolithophore
What is thought to be the reason for the decline of stromatolites?
Competition from seaweeds and sponge
What organisms are responsible for paralytic shellfish poisoning (PSP)?
Dinoflagellates
What organism is in a symbiotic relationship with zooxanthellae?
Foraminiferans
Archeons that can survive at very warm temperatures are ________.
Hyperthermophiles
Which of the following statements about viruses is false?
They contain organelles.
