What would happen if the trachea did not have cartilaginous rings?
A) Incoming air would not undergo filtration.
B) Incoming air would not be humidified.
C) Sense of smell would be lost, and food would taste funny.
D) The trachea would collapse.
D
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Which are endocrine organs? (Check all that apply.)
_____ adenohypophysis _____ adrenal gland _____ cochlea _____ hypothalamus _____ ileum _____ lymph node _____ neurohypophysis _____ ovary _____ pancreas _____ pineal gland _____ salivary gland _____ sebaceous gland _____ spleen _____ testis _____ thyroid gland
Answer the following statement true (T) or false (F). Experiment 1 depends on recombination.
A researcher is studying the rII locus of phage T4. Three rII- strains are obtained: A, B, C, and D. In the first experiment, E. coli strain K(?) is coinfected with two rII- strains simultaneously and the results are recorded. Infection with A and B phage = plaques form Infection with A and C phage = plaques form Infection with B and C phage = no plaques form Infection with B and D phage = no plaques form Infection with C and D phage = no plaques form In a second experiment, coinfections are performed first in E. coli strain B, then the progeny phage are used to infect E. coli strain K(?). Progeny of A and B phage = plaques form Progeny of B and C phage = plaques form Progeny of C and D phage = plaques form Progeny of B and D phage = no plaques from
Four of the five answers listed below are molluscan body features. Select the exception
a. gills b. head and foot c. mantle d. conspicuous segmentation e. radula
Which substance correctly identifies a reactant in the following chemical equation?
CO2 + H2O ? H2CO3 a. water b. carbon c. oxygen d. hydrogen e. carbonic acid