Two main symbionts of termites are ________ and ________
A) archaea / bacteria
B) bacteria / fungi
C) bacteria / protists
D) fungi / protists
Answer: C
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If the NMDA receptor is removed
a. long-term potentiation doesn't occur. b. short-term memory is not converted. c. long-term memory occurs but is shortened. d. short-term memory is lengthened. e. long-term potentiation doesn't occur and short-term memory is not converted.
What three features define eusociality? (Check three.)
_____ colony resides in an enclosed hive or nest _____ cooperative brood care _____ haplodiploidy _____ insect species only _____ overlap of generations _____ reproductive division of labor _____ reproduction during a mating flight
Identifying an autosomal recessive mutation in a mutagenic screen in Drosophila requires identification of a mutant in the F3 generation. If testing for a sex-linked recessive lethal mutation (e.g
, cn l + using a balancer chromosome such as cnCyO), in which generation can lines with mutations be identified?
According to the pressure-flow hypothesis, which of the following statements is NOT true?
a) Water moves from the xylem to the phloem of a plant. b) Water is necessary for sugars to move through phloem. c) Phloem is able to move sugars in either direction to meet the nutritional needs of the plant. d) The movement of water into a nutrient-rich region of the phloem decreases the pressure in that region.