Introduction:
The gonadotropins are the hormones secreted by the anterior pituitary. The hormones act on the gonads to increase the production of the sex hormones and also stimulates the production of ova in females and sperm in males.

Answer to Problem 1E
Correct answer :
The correct answer is option (c) GnRH.
Explanation of Solution
Explanation/justification for the correct answer:
Option (c) GnRH. The initiation of puberty is regulated by gonadotropin-releasing hormone (GnRH), which is secreted by the hypothalamus. GnRH further stimulates the secretion of gonadotropins from the anterior pituitary. The gonadotropin hormones regulate the function of the gonads. So, the correct answer is option (c).
Explanation for incorrect answer:
Option (a) Inhibin. Inhibin hormone is produced and secreted by the gonads (in males, by Sertoli cells and in females, by the granulosa cells of the ovarian follicles) and inhibits the synthesis of follicle-stimulating hormone (FSH) by the pituitary gland. So, this is an incorrect option.
Option (b) Androgens. Androgen is of two types, namely testosterone and androstenedione. Androgen is responsible for the development and stability of secondary sex-specific characters, the formation of sex-ducts, and sex-glands in males. So, this is an incorrect answer.
Option (d) FSH. The follicle-stimulating hormone (FSH) is a gonadotropin hormone that stimulates the development of ovarian follicles in the female and seminiferous tubules and production of sperms in the male. So, this is an incorrect answer.
Option (e) GHRH. Growth hormone-releasing hormone (GHRH) is secreted by the hypothalamus that stimulates the pituitary gland to produce and secrete growth hormone (GH). So, this is an incorrect answer.
In both males and females, gonadotropin secretion by the anterior pituitary is stimulated by the GnRH. Hence, the correct answer is option (c) GnRH.
Want to see more full solutions like this?
Chapter 22 Solutions
PRINCIPLES OF HUMAN PHYSIOLOGY (LCPO)
- What is this?arrow_forwardMolecular Biology A-C components of the question are corresponding to attached image labeled 1. D component of the question is corresponding to attached image labeled 2. For a eukaryotic mRNA, the sequences is as follows where AUGrepresents the start codon, the yellow is the Kozak sequence and (XXX) just represents any codonfor an amino acid (no stop codons here). G-cap and polyA tail are not shown A. How long is the peptide produced?B. What is the function (a sentence) of the UAA highlighted in blue?C. If the sequence highlighted in blue were changed from UAA to UAG, how would that affecttranslation? D. (1) The sequence highlighted in yellow above is moved to a new position indicated below. Howwould that affect translation? (2) How long would be the protein produced from this new mRNA? Thank youarrow_forwardMolecular Biology Question Explain why the cell doesn’t need 61 tRNAs (one for each codon). Please help. Thank youarrow_forward
- Molecular Biology You discover a disease causing mutation (indicated by the arrow) that alters splicing of its mRNA. This mutation (a base substitution in the splicing sequence) eliminates a 3’ splice site resulting in the inclusion of the second intron (I2) in the final mRNA. We are going to pretend that this intron is short having only 15 nucleotides (most introns are much longer so this is just to make things simple) with the following sequence shown below in bold. The ( ) indicate the reading frames in the exons; the included intron 2 sequences are in bold. A. Would you expected this change to be harmful? ExplainB. If you were to do gene therapy to fix this problem, briefly explain what type of gene therapy youwould use to correct this. Please help. Thank youarrow_forwardMolecular Biology Question Please help. Thank you Explain what is meant by the term “defective virus.” Explain how a defective virus is able to replicate.arrow_forwardMolecular Biology Explain why changing the codon GGG to GGA should not be harmful. Please help . Thank youarrow_forward
- Stage Percent Time in Hours Interphase .60 14.4 Prophase .20 4.8 Metaphase .10 2.4 Anaphase .06 1.44 Telophase .03 .72 Cytukinesis .01 .24 Can you summarize the results in the chart and explain which phases are faster and why the slower ones are slow?arrow_forwardCan you circle a cell in the different stages of mitosis? 1.prophase 2.metaphase 3.anaphase 4.telophase 5.cytokinesisarrow_forwardWhich microbe does not live part of its lifecycle outside humans? A. Toxoplasma gondii B. Cytomegalovirus C. Francisella tularensis D. Plasmodium falciparum explain your answer thoroughly.arrow_forward
- Select all of the following that the ablation (knockout) or ectopoic expression (gain of function) of Hox can contribute to. Another set of wings in the fruit fly, duplication of fingernails, ectopic ears in mice, excess feathers in duck/quail chimeras, and homeosis of segment 2 to jaw in Hox2a mutantsarrow_forwardSelect all of the following that changes in the MC1R gene can lead to: Changes in spots/stripes in lizards, changes in coat coloration in mice, ectopic ear formation in Siberian hamsters, and red hair in humansarrow_forwardPleiotropic genes are genes that (blank) Cause a swapping of organs/structures, are the result of duplicated sets of chromosomes, never produce protein products, and have more than one purpose/functionarrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education





