Microbial ecologists seek to understand how microbes drive and respond to the biogeochemical cycles that are essential for life on Earth. However, at this time it is only possible to make any concrete connections, identifications, or measurements about the abiotic flux of nutrients rather than the interactions between microbes that make these fluxes possible.
Answer the following statement true (T) or false (F)
False
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When a virus has a broad host range,
A. it does not require close contact to infect a new host. B. it can infect many different cell types. C. it can infect many different species. D. the species that the virus can infect are spread over a large geographic distance, potentially causing pandemics. E. it can infect many cell types or species.
Mexican hairless dogs are heterozygous (Hh), carrying a single copy of the recessive lethal allele. In a given population, the Hh genotypic frequency is 60% and the frequency of each homozygote is 20%
Assuming w = 1 for the Hh and hh dogs, what is the estimated genotypic frequency of the lethal HH genotype after reproduction? A) 20% B) 14% C) 10% D) 39% E) 46%
________ lakes are nutrient-rich and tend to have large populations of algae.
A. Eutrophic B. Temperate C. Stratified D. Oligotrophic
Which of the following is an incorrect pairing?
A. electrolytes; ions B. synthesis; endothermic C. hydrolysis; hydrogen bonds D. catabolism; exothermic E. dehydration; anabolism