
To explain:
The joining together of bases in DNA as per the description given by Person W and Person C in their excerpt
Introduction:
Using Person F’s data, Person W and Person C measured the width of the helix and the spacing of the bases. Together they built a model of the double helix that conformed to other scientists’ research. The data was used by Person W and Person C to solve the structure of DNA. The data indicated that DNA was a double helix formed by two strands of

Answer to Problem 43A
The bases are joined together by hydrogen bonds.
Explanation of Solution
According to Person W and Person C’s model of DNA, there are two chains of nucleotides that are held together by the nitrogenous bases. The planes of the bases are perpendicular to the fiber axis. The bases are joined together by weak hydrogen bonds. They form pairs with one base from one chain hydrogen bonded to a single base from the other chain. There are two types of bases; purines and pyrimidines. Adenine andguanine are purines, while thymine and cytosine are pyrimidine bases. One purine base always pairs with a pyrimidine base.
Chapter 12 Solutions
Glencoe Biology (Glencoe Science)
Additional Science Textbook Solutions
Cosmic Perspective Fundamentals
Microbiology: An Introduction
Chemistry & Chemical Reactivity
Chemistry: A Molecular Approach (4th Edition)
Applications and Investigations in Earth Science (9th Edition)
Human Anatomy & Physiology (2nd Edition)
- Explain how the hormones of the glands listed below travel around the body to target organs and tissues : Pituitary gland Hypothalamus Thyroid Parathyroid Adrenal Pineal Pancreas(islets of langerhans) Gonads (testes and ovaries) Placentaarrow_forwardWhat are the functions of the hormones produced in the glands listed below: Pituitary gland Hypothalamus Thyroid Parathyroid Adrenal Pineal Pancreas(islets of langerhans) Gonads (testes and ovaries) Placentaarrow_forwardDescribe the hormones produced in the glands listed below: Pituitary gland Hypothalamus Thyroid Parathyroid Adrenal Pineal Pancreas(islets of langerhans) Gonads (testes and ovaries) Placentaarrow_forward
- Please help me calculate drug dosage from the following information: Patient weight: 35 pounds, so 15.9 kilograms (got this by dividing 35 pounds by 2.2 kilograms) Drug dose: 0.05mg/kg Drug concentration: 2mg/mLarrow_forwardA 25-year-old woman presents to the emergency department with a 2-day history of fever, chills, severe headache, and confusion. She recently returned from a trip to sub-Saharan Africa, where she did not take malaria prophylaxis. On examination, she is febrile (39.8°C/103.6°F) and hypotensive. Laboratory studies reveal hemoglobin of 8.0 g/dL, platelet count of 50,000/μL, and evidence of hemoglobinuria. A peripheral blood smear shows ring forms and banana-shaped gametocytes. Which of the following Plasmodium species is most likely responsible for her severe symptoms? A. Plasmodium vivax B. Plasmodium ovale C. Plasmodium malariae D. Plasmodium falciparumarrow_forwardStandard Concentration (caffeine) mg/L Absorbance Reading 10 0.322 20 0.697 40 1.535 60 2.520 80 3.100arrow_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





