Some plants under attack by insects can communicate this information to other parts of the same plant and to nearby plants via
A) vibrations in their roots. B) low-frequency sound waves.
C) the release of chemicals into the air. D) the release of chemicals into their roots.
C
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When human cells are placed in a hypertonic solution, water enters the cells, causing them to swell and eventually burst.
a. true b. false
The ________ velocity of an enzymatic reaction is the velocity at very high substrate concentration
Fill in the blank with correct word.
Compared to humoral immunity, cell-mediated immunity is more likely to defend against which of the following?
A) virally infected cells only B) transplanted tissue only C) cancer cells only D) both virally-infected cells and cancer cells E) virally-infected cells, cancer cells, and transplanted tissue
Lymph nodes are a place where cells of the immune system accumulate and share information.
a. true b. false