Which of the following is characterized by the formation of a population of lymphocytes that can attack and destroy the foreign material?
a) hypersensitive immunity
b) cell-mediated immunity
c) acquired immunity
d) humoral immunity
Answer: b) cell-mediated immunity
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Which of the following is a characteristic of facilitated diffusion (passive transport) of a molecule across a membrane?
A) Its rate is higher than that of simple diffusion of the molecule. B) It is highly specific for the molecule being transported. C) The direction of transport is determined by concentration and/or electrochemical gradients. D) The rate of transport is saturable. E) All of the above are true.
A(n) threatened species is a species in imminent danger of extinction
___________________ Indicate whether the statement is true or false.
____ is believed to be produced in the leaves and transported to the phloem in the shoot apical meristem
a. Jasmonic acid b. Florigen c. Brassinosteroid d. Abscisic acid e. Ethylene
gene
What will be an ideal response?