Antibody titer can be measured by
A) negative microscopy.
B) agglutination.
C) plate counts done after isolating the pathogen.
D) polymerase chain reaction.
Answer: B
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Which of the following are characteristics of biomes? Check all that apply.
_____ A biome is a large geographical area with distinctive plant and animal groups. _____ Biomes are only located at certain longitudes and latitudes. _____ The climate and geography of a region determines what type of biome can exist in that region. _____ Each biome consists of only one type of ecosystem. _____ Temperate evergreen forest is one of the major biomes.
Each year, plants and algae remove approximately ________ of the CO2 in the atmosphere.
A. half B. 1/7th C. 1/50th D. 100%
Which of the following would be most effective in reducing the amount of CO2 in the atmosphere?
A) cyanobacteria B) anaerobic microbes C) heterotrophic organisms D) fungi E) nitrogen fixers
During cellular respiration, what molecule collects the majority of the electrons from the food that we eat?
A) CO2 B) glucose C) ATP D) NAD+ E) FAD+