The link between a first messenger and a second messenger in a cell that responds to peptide hormones is usually

A) cAMP.
B) cGMP.
C) adenyl cyclase.
D) a G protein.
E) calcium ion levels.


D

Anatomy & Physiology

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The intervertebral discs are composed of the tissue ________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Which are classified as afferent pain fibers?

A) large C fibers B) small A delta fibers C) both of the above D) neither of the above

Anatomy & Physiology

Describe the structural characteristics of the epidermis that contribute to its ability to protect the surface of an animal

What will be an ideal response?

Anatomy & Physiology

Which of the following is not one of the formed elements of blood?

A) RBCs B) platelets C) antibodies D) lymphocytes E) basophils

Anatomy & Physiology