Which hormone possesses a chemical structure classified as a polypeptide:
Show answer Hide answer
Answer: D. Vasopressin
Explanation
Vasopressin functions as a peptide hormone containing amino acid chains in its structure. The hypothalamus synthesizes vasopressin before it travels down for posterior pituitary release. Peptide hormones differ fundamentally from steroid molecules by lacking lipid-based ring structures. Vasopressin is alternatively known as the antidiuretic hormone for regulating water balance. Polypeptide chains consist of numerous amino acids linked together by peptide covalent bonds. Endocrine signaling relies heavily on peptide hormones to regulate internal physiological processes.
Doctors monitor vasopressin levels when diagnosing conditions like diabetes insipidus in patients. Water retention in kidneys gets controlled directly by circulating blood vasopressin concentrations. Synthetic vasopressin medications help manage specific medical emergencies involving severe blood pressure drops. Thyroxine is an amino acid derivative containing iodine atoms rather than polypeptide chains. Epinephrine represents a catecholamine derived from tyrosine rather than being a large peptide. Norepinephrine functions primarily as a catecholamine neurotransmitter and hormone without polypeptide structures.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
Related questions
Q1. What membrane potential in_________volts exists when a neuron remains inactive:
Show answer Hide answer
Answer: B. 0.07
An inactive neuron maintains a resting membrane potential around 0.07 volts. This voltage corresponds to negative seventy millivolts inside the cellular membrane. Ion pumps maintain this electrical gradient while the neu...
Q2. How can a morpheme be most accurately defined _____________________?
Show answer Hide answer
Answer: D. the smallest unit of language that conveys a meaning
A morpheme is defined as the smallest linguistic unit that carries meaning. These units cannot be divided further without losing their distinct semantic value. Words are composed of one or more morphemes combined accordi...
Q3. What does the concept of a modified extended family denote_________?
Show answer Hide answer
Answer: A. relatives who live close by but do not share a household
The selection correctly defines a modified extended family as relatives living nearby in separate households. This family structure maintains close social and emotional ties without sharing a single physical residence. K...
Q4. How does a hungry person evaluate food_____________?
Show answer Hide answer
Answer: A. Primary reinforcer
A hungry person evaluates food as a primary reinforcer satisfying hunger drives. Primary reinforcers reduce physiological deficits without needing associative learning. Biological needs dictate the rewarding value of foo...
Q5. Which structural component is absent in a neuron _______________?
Show answer Hide answer
Answer: B. septum
A septum is not a structural component of a standard nerve cell. Neurons consist of a cell body dendrites and an axon with optional myelin. Septa are typically found in cardiac or brain anatomical partitions rather than...
Q6. A prominent research focus concerning organizational power investigates women's workplace experiences. Which statement below also characterizes women at work?
Show answer Hide answer
Answer: B. It is illegal to treat pregnancy as a cause for dismissal
Federal employment laws strictly prohibit dismissing any employee based on pregnancy status. The Pregnancy Discrimination Act protects pregnant workers from unfair treatment at their jobs. Employers cannot terminate staf...