Multiple Choice
Which of the following statements about the suprachiasmatic nucleus (SCN) is FALSE?
21
views
10. Cell Signaling
Introduction to Cell Signaling
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following statements is true regarding lipophilic hormones such as steroids?
A
They are hydrophilic and require transport proteins to move through the cytoplasm.
B
They are stored in vesicles and released by exocytosis upon stimulation.
C
They bind exclusively to cell surface receptors because they cannot cross the plasma membrane.
D
They can diffuse through the plasma membrane and bind to intracellular receptors.
Verified step by step guidance1
Understand the nature of lipophilic hormones, such as steroids. Lipophilic hormones are nonpolar and hydrophobic, meaning they can easily pass through lipid bilayers like the plasma membrane.
Recognize that lipophilic hormones do not require transport proteins to move through the cytoplasm. Instead, they can diffuse freely within the cell due to their hydrophobic nature.
Note that lipophilic hormones are not stored in vesicles or released by exocytosis. They are synthesized on demand and diffuse out of the cell where they are produced.
Understand that lipophilic hormones do not bind exclusively to cell surface receptors. Their ability to cross the plasma membrane allows them to interact with intracellular receptors located in the cytoplasm or nucleus.
Conclude that lipophilic hormones, such as steroids, can diffuse through the plasma membrane and bind to intracellular receptors, which is the correct statement in this case.
5:03mWatch next
Master Introduction to Cell Signaling with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Cell Signaling practice set
Problem sets built by lead tutorsExpert video explanations