Which of the following best describes cyanobacteria?
A. They all can use H2S as a source of electrons for photosynthesis.
B. They carry out oxygenic photosynthesis.
C. They carry out anoxygenic photosynthesis.
D. Their photosynthetic pigments are carried in chlorosomes.
Answer: B
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Schistosoma and Plasmodium species both require
A) direct sexual contact for transmission. B) immunocompromised hosts. C) transmission by insect vectors. D) two hosts to complete their life cycle and reproduce.
When geographic variation occurs among the members of a species, individuals
a. may be mistaken for separate species. b. cannot mate successfully. c. cannot produce offspring with intermediate characteristics. d. may be absent in most locations. e. may be from different subpopulations
An important group of peripheral membrane proteins are enzymes such as the phospholipases that cleave the head groups of phospholipids. What properties must these enzymes exhibit?
A) resistance to degradation B) independence from cofactor interaction C) water solubility D) lipid solubility E) membrane-spanning domains
When fluorescently labeled oligonucleotides that are known to be specific to the microbe of interest are used to label natural samples, the technique is known as ________.
A. fluorescent in situ hybridization (FISH) B. epifluorescence microscopy C. gel electrophoresis D. polymerase chain reaction (FISH)