Vessel elements differ from tracheids differ in that vessel elements contain pits
____________________ Indicate whether the statement is true or false.
F, perforations
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The osmoregulatory and ionoregulatory problems facing a saltwater fish are
A. loss of water and loss of ions. B. loss of water and gain of ions. C. gain of water and loss of ions. D. gain of water and gain of ions. E. buildup of urea in tissues.
A chromosome that results when the centromere splits in the wrong plane during meiosis, forming identical arms, is a(n)
A) ring chromosome. B) metachromosome. C) parachromosome. D) isochromosome.
The total amount of ATP that a cell gains for each glucose molecule depends on the presence of
A.) water B.) carbon dioxide C.) oxygen D.) glucose
Protists that absorb nutrients from dead organic matter are called
A) predatory. B) decomposers. C) photosynthetic. D) parasitic. E) symbiotic.