Stimulation of olfactory receptor cells involves activation of G-protein molecules inside them
Indicate whether this statement is true or false.
TRUE
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Metabolism refers to all of the chemical reactions in a cell.
Answer the following statement true (T) or false (F)
The following steps occur in rods when they are excited by photons of light. What is the proper sequence for these steps? 1. Membrane sodium channels close. 2. Increased phosphodiesterase breaks down cGMP. 3. Retinal changes from the 11-cis form to the 11-trans form. 4. The membrane hyperpolarizes and the rate of neurotransmitter release declines. 5. Opsin activates transducin. 6. Opsin
activation occurs. A) 1, 6, 5, 2, 4, 3 B) 3, 6, 5, 2, 1, 4 C) 6, 3, 5, 2, 1, 4 D) 3, 6, 5, 1, 2, 4 E) 1, 3, 4, 5, 6, 2
The skull consists of the _____________ and the facial bones
Fill in the blank(s) with the appropriate word(s)
What is the specific role of the enzyme indicated by B during the formation of the new DNA strands?
A)joining the nucleotides that form the new DNA strand B)transferring nucleotides from the old DNA strand to the new DNA strand C)joining the fragments of DNA that are formed during lagging-strand synthesis D)producing an RNA primer that will be extended into the new DNA strand