Which of the following integral proteins allows ions to pass into or out of the cell?
Receptor
Channel
Ligand
Peripheral
The Correct Answer is B
a: Receptor - Receptors are proteins that bind to signaling molecules (ligands) outside the cell and initiate cellular responses but do not typically facilitate ion movement.
b. Channel-Integral membrane proteins called ion channels create pores in the cell membrane, allowing specific ions to pass through, thus facilitating ion movement into or out of the cell.
c: Ligand - Ligands are signaling molecules that bind to receptors, activating them, but they do not facilitate ion movement.
d: Peripheral - Peripheral proteins are found on the surface of the cell membrane but are not typically involved in creating ion channels
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a: Basal ganglia - The basal ganglia are involved in motor control and coordination but not in respiratory regulation.
b: Parietal lobe - The parietal lobe is involved in sensory processing and spatial awareness but not in respiratory regulation.
c. Medulla: The medulla oblongata, specifically the respiratory center within it, is responsible for the involuntary control of respiration, including setting the basic rhythm of breathing and responding to changes in blood pH and oxygen levels.
d: Hypothalamus - The hypothalamus regulates various physiological processes, including temperature regulation and hormone secretion, but not respiration.
Correct Answer is B
Explanation
a. Stratum granulosum: This layer is composed of keratinocytes that are in the process of dying and forming a barrier of keratin.
b. Stratum basale: This is the deepest layer of the epidermis, where keratinocytes are actively dividing. This layer contains stem cells that produce new keratinocytes to replace those shed from the surface.
c. Stratum lucidum: This layer is only present in thick skin, such as on the palms and soles, and consists of dead keratinocytes that have a translucent appearance.
d. Stratum spinosum: This layer contains keratinocytes that are beginning to produce keratin and other proteins but are not rapidly dividing.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.