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Stimulation of Cell Replication

View the animation below, then complete the quiz to test your knowledge of the concept.






1Growth factor receptors are typically found in the
A)cell membrane.
B)cytoplasm.
C)nucleus.
D)mitochondria.
E)Golgi apparatus.



2The growth factor-receptor complex initiates
A)DNA replication.
B)mRNA transcription.
C)protein synthesis.
D)protein kinase cascades.
E)protein breakdown.



3Proteins that stimulate cell division include
A)caspases.
B)cyclins.
C)cyclin-dependent kinases.
D)caspases and cyclins.
E)cyclins and cyclin-dependent kinases.



4Animal cells divide usually only when specific growth factors are present.
A)True
B)False



5There are only a few types of growth factors.
A)True
B)False







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