At which level(s) is eukaryotic gene expression regulated?
a. transcription
b. translation
c. posttranscription
d. posttranslation
e. all of these
E
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Which are likely involved in promoting cell differentiation during animal development?
A. differential distribution of cytosolic factors among early embryonic cells B. extracellular signals C. cellular receptors D. specific morphogens E. All of the choices are correct
If the cilia on Bob's inner ear hair cells are damaged, what can be done to improve Bob’s hearing, other than a hearing aid?
Hair cells are delicate sensors of sound, movement, and gravity. Since they are stimulated by movement of the stereocilia and kinocilium, these structures are vulnerable to damage when stimulus is too strong or sustained. A. transgenic expression of a cilia protein B. minoxidil treatment C. injection of microtubules into the cochlea D. not much – there is currently no drug that can regenerate hair cells
In ______, eggs are fertilized inside the mother, and young are born alive.
a. viviparity b. ovipary c. ovoviparity d. oviparity
The parts of the plant that conduct water and dissolved minerals from the roots to the leaves are
A. xylem. B. stomata. C. roots. D. phloem. E. cuticle.