Olfactory receptor proteins are especially located on the membrane of their non-motile cilia and are coupled to ________.
A. G-proteins
B. cAMP
C. cGMP
D. Ca2+
Answer: A
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How can you explain the substantial lag between a signal and response in the phylum Porifera?
A) Lag occurs because sponges are asymmetrical. B) Lag occurs because sponges show no cephalization. C) Lag occurs because action potentials in cells of sponges are slow compared to action potentials in neurons. D) Lag occurs because the signal has to be very strong in order to see any response.
Cadherins and integrins are examples of what type of membrane protein?
a. cell adhesion molecules (CAMs) b. collective additive molecules (CAMs) c. adhesive membrane proteins (AMPs) d. adhesive lipid molecules (ALMs) e. adhesive locking molecules (ALMs)
Infertility treatments most often involve the injection of aromatases, leading to enhanced numbers of developing early ovarian antral follicles
Indicate whether the statement is true or false.
With each ventricular systole,
A) blood pressure remains steady. B) the ventricles fill with blood. C) blood pressure decreases. D) cardiac output decreases. E) blood pressure increases.