
Concept explainers
Introduction:
The overall ability of an organism to fight off foreign disease-causing organisms is known as immunity. It is of two types, including innate and the acquired immunity. Innate immunity is the nonspecific type of defense, providing barriers for foreign agents that may enter the organism. In humans, innate immunity consists of skin, mucous coating the epithelium lining of the urogenital, respiratory and gastrointestinal tract, cytokine barriers, and acid in the stomach, natural killer T-cells, macrophages, and the complement system.
Acquired immunity is the pathogen-specific type of defense. Whenever the human body encounters a pathogen for the first time, a primary response is generated, which is of low intensity as no past memory of this pathogen exists. The primary response also generates memory cells so as to counter the pathogen better in case of future invasion. This secondary response is of high intensity. Both of these responses are carried out by B and T lymphocytes. In response to the antigens, the B cells produce antibodies and the T cells help them. Acquired immunity mediated by antibodies is known as a humoral response. The cell-mediated response is the other type of response, governed by the T-cells.

Want to see the full answer?
Check out a sample textbook solution
Chapter 9 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
- Amino Acid Coclow TABle 3' Gly Phe Leu (G) (F) (L) 3- Val (V) Arg (R) Ser (S) Ala (A) Lys (K) CAG G Glu Asp (E) (D) Ser (S) CCCAGUCAGUCAGUCAG 0204 C U A G C Asn (N) G 4 A AGU C GU (5) AC C UGA A G5 C CUGACUGACUGACUGAC Thr (T) Met (M) lle £€ (1) U 4 G Tyr Σε (Y) U Cys (C) C A G Trp (W) 3' U C A Leu בוט His Pro (P) ££ (H) Gin (Q) Arg 흐름 (R) (L) Start Stop 8. Transcription and Translation Practice: (Video 10-1 and 10-2) A. Below is the sense strand of a DNA gene. Using the sense strand, create the antisense DNA strand and label the 5' and 3' ends. B. Use the antisense strand that you create in part A as a template to create the mRNA transcript of the gene and label the 5' and 3' ends. C. Translate the mRNA you produced in part B into the polypeptide sequence making sure to follow all the rules of translation. 5'-AGCATGACTAATAGTTGTTGAGCTGTC-3' (sense strand) 4arrow_forwardWhat is the structure and function of Eukaryotic cells, including their organelles? How are Eukaryotic cells different than Prokaryotic cells, in terms of evolution which form of the cell might have came first? How do Eukaryotic cells become malignant (cancerous)?arrow_forwardWhat are the roles of DNA and proteins inside of the cell? What are the building blocks or molecular components of the DNA and proteins? How are proteins produced within the cell? What connection is there between DNA, proteins, and the cell cycle? What is the relationship between DNA, proteins, and Cancer?arrow_forward
- please fill in the empty sports, thank you!arrow_forwardIn one paragraph show how atoms and they're structure are related to the structure of dna and proteins. Talk about what atoms are. what they're made of, why chemical bonding is important to DNA?arrow_forwardWhat are the structure and properties of atoms and chemical bonds (especially how they relate to DNA and proteins).arrow_forward
- The Sentinel Cell: Nature’s Answer to Cancer?arrow_forwardMolecular Biology Question You are working to characterize a novel protein in mice. Analysis shows that high levels of the primary transcript that codes for this protein are found in tissue from the brain, muscle, liver, and pancreas. However, an antibody that recognizes the C-terminal portion of the protein indicates that the protein is present in brain, muscle, and liver, but not in the pancreas. What is the most likely explanation for this result?arrow_forwardMolecular Biology Explain/discuss how “slow stop” and “quick/fast stop” mutants wereused to identify different protein involved in DNA replication in E. coli.arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning




