During resting breathing in humans, which of the following is accurate?
a. The diaphragm contracts and the internal intercostal muscles relax.
b. The diaphragm relaxes and the internal intercostal muscles contract.
c. The diaphragm contracts and the internal intercostal muscles contract.
d. The diaphragm relaxes and the external intercostal muscles contract.
e. Rib muscles and the diaphragm relax.
E
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Extracellular polymer substance (EPS) is a slimy, glue-like substance produced by bacteria to facilitate
the formation of endospores.
Indicate whether the statement is true or false.Where does karyogamy occur in zygomycetes?
a. basidia b. conidiophores c. sporangia d. asci e. zygospores
Binding of _____ to _____ in DNA can increase the rate of transcription of specific genes
a. activators; promoters b. activators; enhancers c. repressors; operators d. both activators; promoters and activators; enhancers
Pioneer plant species are usually characterized
by a. small size. b. high dispersal rates. c. slow maturation. d. high dispersal rates and high numbers of offspring e. small size, efficient dispersal mechanisms, and slow maturation