Which of the following statements is not true regarding fertilizers?
A. There are bacteria that act as natural fertilizers, making nitrogen available to plants.
B. Fertilizers can improve the health of plants by providing missing minerals.
C. There are no natural fertilizers, only chemical fertilizers.
D. Fertilizers provide minerals that the plants need to grow.
Answer: C
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When epidermal growth factor binds to its _____________, the receptor phosphorylates itself, triggering a signal transduction pathway.
A. thermoreceptor B. G-protein coupled receptor C. mechanoreceptor D. ligand-gated ion channel receptor E. enzyme-linked receptor
What is a disadvantage of asexual reproduction? a. It does not introduce variety into populations
b. Finding a mate is not required. c. It is not an efficient process. d. It can create high density of populations.
Mean arterial pressure can be increased by all of the following EXCEPT
A) increasing heart rate. B) increasing sympathetic activity. C) increasing blood volume. D) decreasing end-diastolic volume. E) increasing venous return
During the Calvin cycle, plants:
A) fix CO2 into sugar. B) create ATP. C) convert solar energy to chemical energy. D) oxidize H2O to oxygen.