The peptide hormone (protein based hormone) Oxytocin is normally produced in the hypothalamus and released by...

The peptide hormone (protein based hormone) Oxytocin is normally produced in the hypothalamus and released by the posterior pituitary. Where is the polypeptide strand of oxytosin synthesized? A. Ribosomes in the cytoplasm B. RNA polymerase in the nucleus C. Ribosomes associated with the rough endoplasmic reticulum D. Ribosomes associated with the smooth endoplasmic reticulum E. Golgi apparatus

Expert Solution

Oxytocin is a hormone that is synthesized by the hypothalamus. It is a 9 amino acid peptide hormone that is synthesized by the ribosomes present on the ER. Oxytocin is a secreted hormone and hence, it will be synthesized via the secretory pathway. It is formed as a precursor protein in the ribosomes attached to rough ER, bound to a carrier protein neurophysin. It passes through the RER to the Golgi apparatus, where it is packaged into the neurosecretory granules. When oxytocin passes to the neurohypophysis, neurophysin is cleaved to release oxytocin.

Free ribosomes in cytoplasm will synthesize soluble proteins that reside in cytoplasm. Smooth endoplasmic reticulum lacks ribosomes and hence is not involved in proteins synthesis. Golgi apparatus only packages the protein into secretory granules and catties out post translational modifications. RNA polymerase in the nucleus is involved in transcription and not protein translation.

Right choice: C. Ribosomes associated with the rough endoplasmic reticulum.

gladiator answered 4 months ago

Q1) which hormone is Not synthesized in the hypothalamus? Oxytocin (OT) Thyrotropin-releasing hormone (THR) Somatostatin Prolactin...

Q1) which hormone is Not synthesized in the hypothalamus? Oxytocin (OT) Thyrotropin-releasing hormone (THR) Somatostatin Prolactin (PRL) Antidiuretic hormone (ADH) Q2) Which of the following statement is false. Taste signals travel from the tongue through the facial and hypoglossal nerve. The middle ear consists of an air-filled chamber. Rods secrete glutamate from the base of the cell when not exposed to light. Peptide hormones are synthesized by the rough endoplasmic reticulum. None of these. Q3) Epidural anesthesia is introduce in...

For the following hormones released from the hypothalamus, list the hormone it triggers from the anterior...

For the following hormones released from the hypothalamus, list the hormone it triggers from the anterior pituitary and that hormone’s action at its target cell. (1 pt) Prolactin releasing hormone Thyrotropin releasing hormone Corticotropic releasing hormone Gonadotropin releasing hormone

24. Erythropoietin (EPO) is a hormone produced by the kidneys and released in response to hypoxia...

24. Erythropoietin (EPO) is a hormone produced by the kidneys and released in response to hypoxia to promote the maturation of RBCs. During the 1980s, a human recombinant form of EPO (rHuEPO) became available. Explain the advantages and dangers of administering someone rHuEPO to increase oxygen-carrying capacity of blood. 25. a.Take your pulse. b.Assuming that your SV is 70 ml and 1 ml of blood weighs 1g, calculate how long it would take your heart to pump your body weight...

QUESTION 23 ___ is produced from hypothalamus and released from posterior pituitary gland. ACTH ADH Growth...

QUESTION 23 ___ is produced from hypothalamus and released from posterior pituitary gland. ACTH ADH Growth hormone Prolactin QUESTION 24 The blind spot of the eye is where ___. the optic nerve leaves the eye more rod cells are found than cone cells the macula lutea is located only cone cells exist 1 points QUESTION 25 Which of the following is responsible for the coordination of muscle movement? pons hypothalamus cerebellum medulla oblongata 1 points QUESTION 26 The...

Hormones of the Hypothalamus and Pituitary Gland: Hormone Origin Target Effect Antidiuretic hormone (ADH) Made in...

Hormones of the Hypothalamus and Pituitary Gland: Hormone Origin Target Effect Antidiuretic hormone (ADH) Made in Hypothalamus Stored in Posterior Pituitary Gland Kidney Tubules Increase aquaporin proteins to increase water retention. Oxytocin Made in Hypothalamus Stored in Posterior Pituitary Gland Smooth muscle in uterus Mammary gland cells Contraction of uterus Milk release Thyroid stimulating hormone (TSH) Made in anterior pituitary gland Thyroid cells Triggers release of thyroid hormones Prolactin Made in anterior pituitary gland Mammary glands Stimulates growth of mammary...

The peptide Vasopressin is an antidiuretic hormone secreted by the pituitary gland of the brain. It...

The peptide Vasopressin is an antidiuretic hormone secreted by the pituitary gland of the brain. It has the sequence: Cys-Tyr-Phe-Gln-Asn-Cys-Pro-Arg-Gly A) Write out this sequence in one-letter code B) Name the C-terminal residue C) Give the net charge at pH 7 D) Draw the structure of the peptide showing side chains and identifying the peptide bonds

What 2 antagonistic hormones in the hypothalamus regulate growth hormone secretion?

Q. Discuss the details of secretion, regulation and function on target tissue of hormone Oxytocin.

Oxytocin is a nonprotein peptide (therefore has less than 40 amino acids). What is the charge...

Oxytocin is a nonprotein peptide (therefore has less than 40 amino acids). What is the charge on this peptide at pH 6.8?

The hormone atrial natriuretic peptide is secreted by the atria to regulate blood pressure in a...

The hormone atrial natriuretic peptide is secreted by the atria to regulate blood pressure in a homeostatic fashion .A. Atrial natriuretic peptide inhibits the secretion of renin and aldosterone. How would this peptide affect blood volume and blood pressure? B. Atrial natriuretic peptide also acts to dilate blood vessels. What effect will dilating blood vessels have on blood velocity and blood pressure? C. The body secretes atrial natriuretic peptide in response to a certain physical signal from the atria. What...

Question