How does sap move from the sieve tube into a sink?

A. by a pump
B. by pressure
C. by gravity
D. by osmosis
E. by active transport


Ans: B. by pressure

Biology & Microbiology

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Resonance ________ describes a condition in which extra electrons are delocalized over all possible bonds.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Water treatment processes for drinking water

A. are similar to wastewater treatment. B. are only necessary when using recycled water. C. includes disinfection but not filtration. D. has no biological treatment phase.

Biology & Microbiology

The activity of which organelles helps keep the

ingestion of all but excessive amounts of ethyl alcohol from being fatal? a. Golgi bodies b. vesicles c. mitochondria d. lysosomes e. peroxisomes

Biology & Microbiology

When the blood level of calcium falls below normal, which hormone stimulates osteoclasts to break

down bone and release calcium? a. growth hormone b. thyroid hormone c. calcitonin d. thyroid hormone e. PTH

Biology & Microbiology