Contractions of the dome-shaped __________ and the intercostal muscles between the ribs alter the volume of the thoracic cavity during breathing.
Fill in the blank(s) with the appropriate word(s).
diaphragm
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Which of the following cell types retains the ability to undergo cell division?
A) a sclereid B) a parenchyma cell near the root tip C) a functional sieve tube element D) a tracheid E) a stem fiber
One strategy to overcome antibiotic resistance is to use the same antibiotics in animal husbandry as those that are prescribed for humans, since the potential for resistant bacteria to evolve would be limited to only a small number of drug classes.
Answer the following statement true (T) or false (F)
Fresh water has an osmolarity of
a. ~5 mOsm/L. b. ~225 mOsm/L. c. ~300 mOsm/L. d. ~1000 mOsm/L. e. ~1500 mOsm/L.
What type of connective tissue is able to withstand stretching in any direction and consists of fibroblasts interspersed among a tight mesh of randomly arranged collagen fibers?
a. loose connective tissue b. dense regular connective tissue c. dense irregular connective tissue d. cartilage e. bone