BIO 1014 LAB REPORT WEEK 1 PART 1 / BIO1014 LAB REPORT WEEK 1 PART 1: GRADED A | 100% CORRECT |SOUTH UNIVERSITY

BIO 1014 LAB REPORT WEEK 1:
Endocrine System: The Actions of Hormones on Target Cells

1. The receptor is activated by the input signal that is the
___HORMONE__________. This signal causes a biochemical change in the
cell. Name three of the five possible changes.

1. ____CONTRACTION_________________________

2. ____SECRETION____________________________

3. ____TRANSPORT___________________________

2. Water-soluble proteins such as ____PEPTIDES______ and
___CATECHOLAMINES_____ bind to receptors located where on the cell?
__ON THE CELL MEMBRANE___

3. G proteins:

a. What is bound to the G protein in the inactive state? __GDP______
In the active state? __GTP___

b. What catalyzes the conversion of ATP to cAMP? __ADENYLATE____
__CYCLASE____

c. What is known as the first messenger? __HORMONE__ Second messenger?
__cAMP___

d. A molecule of cAMP activates __PROTEIN__ ___KINASE___ ___A__, which
can phosphorylate many proteins.

e. A single molecule of a hormone can have a large effect on the cell due to
this process, called__AMPLIFICATION__.