When a cell reproduces by mitosis and cytoplasmic division, does its life end?
What will be an ideal response?
This is a very big question with huge ramifications. On the one hand, that given cell does cease to exist so it could be thought that its life ends. On the other hand, no part of the cell actually is lost in mitosis and thus it could be thought that the cell continues to live. If the latter is the case, and argument could be made that all cells alive today are as old as the first cell!
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In E. coli, lactose binds with:
A. the lactose operon repressor, preventing it from binding to the operator. This allows the lacZ and lacY genes to be transcribed. B. the lactose operon operator, preventing it from binding to the repressor. This allows the lacZ and lacY genes to be transcribed. C. the lactose operon repressor, helping it bind to the operator. This prevents the lacZ and lacY genes from being transcribed. D. the lactose operon operator, preventing RNA polymerase from being recruited. This prevents the lacZ and lacY genes from being transcribed. E. the lactose operon operator, recruiting RNA polymerase. This allows the lacZ and lacY genes to be transcribed.
The movement of alleles from one population to another is called population flow
Indicate whether the statement is true or false
This protein functions in muscle contraction.
a. Keratin b. Hemoglobin c. Actin d. Insulin e. Pepsin
How does marsupial reproduction differ from the reproduction of placental mammals?
What will be an ideal response?