Respond to the following statements with reference to the five plant macronutrients listed below.
A. This nutrient is an important component of proteins and nucleic acids.
B. This nutrient helps to maintain turgor pressure in stomata.
C. This macronutrient is a main component of all biological molecules.
D. This nutrient is essential to formation of chlorophyll and acts as a cofactor for many enzymes.
E. This nutrient is a component of ATP.
A. nitrogen
B. potassium
C. carbon
D. magnesium
E. phosphorus
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Growing bacteria that degrade an environmental pollutant, which is also toxic to the cells at artificially high concentrations, might require ________ to obtain a sufficient population for biochemistry studies
A) a continuous batch culture B) a second growth substrate to keep the culture in exponential growth phase C) steady state growth kinetics D) the use of a chemostat
Media function testing should be performed on commercially prepared media when:
a. organisms expected to grow on the media demonstrate growth. b. daily as required. c. on all new lots of media. d. only when the identity and growth cha-racteristics appear abnormal.
Prions
a. are more complex than viruses b. have large DNA genomes c. cause neurodegenerative disorders in mammals d. infect plant cells e. encode their own polymerases for nucleic acid replication
Even though the phylogenetic lineages for hominins are not definitive, four of the following statements describe
possibilities. Which is NOT a possibility? a. Homo preceded Australopithecus. b. Homo sapiens is the most recent. c. Australopithecus is probably more ancient than Homo. d. Homo erectus preceded Homo sapiens. e. Chimpanzees and bonobos are the closest living relatives to modern humans.