The cellular process that changes DNA into a mRNA molecule is called _________
Fill in the blank(s) with the appropriate word(s).
Ans: transcription
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Some genes such as that for ?-actin are expressed at relatively constant levels in tissues regardless of variations in the animal's condition. What do we call this type of gene?
A. transposable element B. steady state gene C. constitutive gene D. recombinant gene E. multifunctional gene
What did the researchers conclude based on the data shown in figure (b)?
A. Harvesting fish randomly led to an increase in average size over time. B. Harvesting larger fish led to an increase in average size over time. C. Harvesting larger fish led to a decrease in average size over time. D. Harvesting fish in a slot limit led to a decrease in average size over time. E. Harvesting fish in a slot limit led to an increase in average size over time.
In which of the following diseases are motor
neurons destroyed?
a. polio b. amyotrophic lateral sclerosis c. Duchenne muscular dystrophy d. multiple sclerosis e. more than one of these
A reflex ____
a. only involves the use of sensory neurons b. is an automatic response to a stimulus that requires considerable thought c. is an automatic response to a stimulus that doesn't require thought d. is an involuntary response that requires only one neuron e. does not require the brain