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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology