The Following Steps Occur in Rods When They Are Excited

question 55

Multiple Choice

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

---

Definitions:

Life Span

The maximum duration of life of a species or individual, encompassing all phases from birth to death.

Parenting

The process of promoting and supporting the physical, emotional, social, and intellectual development of a child from infancy to adulthood.

Sharing Confidences

The act of disclosing private or sensitive information with another person, trusting them to keep it secret.

Technology

Refers to the application of scientific knowledge for practical purposes, especially in industry.