Pathogenic genes - Study guides, Class notes & Summaries

What is the reason that closely linked genes are typically inherited together? - ANSWER The likelihood of a crossover event between these two genes is low All female mammals have one active X chromosome per cell instead of two. What causes this? - ANSWER Activation of the XIST gene on the X chromosome that will become the Barr body In his transformation experiments, what did Griffith observe? - ANSWER Mixing a heat-killing pathogenic strain of bacteria with a living nonpathogenic strain ca...

WGU pathophysiology D236-Exam Questions and Answers 2022/2023 What is Starling's Law of Capillary forces? How does this explain why a nutritionally deficient child would have edema? - ANSWER Starling's Law describes how fluids move across the capillary membrane. There are two major opposing forces that act to balance each other, hydrostatic pressure (pushing water out of the capillaries) and osmotic pressure (including oncontic pressure, which pushes fluid into the capillaries). Bot...

OPENSTAX MICROBIOLOGY TEST BANK / OpenStax Microbiology THIS TEST BANK COVERS ALL CHAPTERS 1-26 OF THE BOOK, Answered. Which of the following is true of the microbial world? A. All microbes are harmful. B. Humans could survive without microbes. C. Many microbes are helpful.* D. Most microbes are pathogenic. Difficulty: Easy ASM Standard: 23, 24 2. Which of the following is when humans first suspected the existence of microbes? A. during the Industrial Revolution B. in prehistoric times*...

Hereditary Breast and Ovarian Cancer correct answers BRCA 1/2 Breast 50-87% Second primary tumor 50-64% BRCA 1: 20-45% BRCA 2: 10-30% BRCA 2: Male breast 6-10% Li-Fraumeni Syndrome correct answers -Sarcoma, breast, leukemia, adrenal and many others -May present in almost every way (ie all family members with same cancers or all with different) -Adrenocortical carcinoma considered pathognomonic -50% have some type by 30, 90% by age 60 -TP53 accounts for 70% of individuals Beckwit...

All of the following are characteristics that make plasmids good cloning vectors, except A. they are small B. they are well characterized C. they can be transferred into appropriate host cells D. they can carry genetic markers, such as antibiotic resistance genes E. they can accept a relatively large amount of foreign DNA Ans: E. they can accept a relatively large amount of foreign DNA Types of Plasmids: -Fertility Factors -Resistance Factors -Bacteriocin Factors -Virulence Plasmids ...

Examples of pathogens that cause human disease include: a. bacteria b. viruses c. fungi d. parasites (protozoans and worms) e. All of the above - e. All of the above Which of the following is not associated with mucosal surfaces? a. mucus-secreting goblet cells b. lysozyme c. M cells d. beating cilia e. white pulp - e. white pulp One reason that pathogenic microorganisms have an advantage in the host they infect is because they: a. have previously been encountered th...

Largest to Smallest - Genome > Chromosome > Chromatin > DNA > Genes > Nucleic Acid DNA Polymerase III - synthesizes new DNA only in the 5' to 3' direction Leading Strand - has one primer Lagging Strand - has multiple primers Griffith - pathogenic pneumonia cells were able to transform non-pathogenic cells Chargaff - base composition varied from species to species and A-T and C-G complementation Hershey and Chase - concluded that the genetic material of the bacteriophag...

Coliforms are a subgroup of enteric bacteria classified by their ability to ferment which sugar? - lactose A Durham tube is included in the LT broth tubes to detect ___, a byproduct of lactose fermentation. - gas production ___ is an enzyme that degrades starch. - Amylase ___ is an opportunistic pathogen that commonly causes staph infections. - Staphylococcus aureus A clear area due to lysis by a phage in a lawn of host cells is called a(n) ____. - Plaque A confluent growth of cells in th...

Straighterline Microbiology Questions and Answers | Latest Version | 2024/2025 | Rated A+ What is the role of plasmids in bacterial cells? Plasmids are small, circular DNA molecules that can carry additional genes, such as those for antibiotic resistance. How do bacteria typically reproduce? Bacteria typically reproduce through a process called binary fission, where a single cell divides into two identical daughter cells. What is the function of the bacterial flagellum? ...

selective breeding (artificial selection) the process of developing organisms with specific characteristics as chosen by the breeders Gregor Mendel () Amateur botanist who published an explanation of hereditary transmission in plants in 1866. Known for his pea-plant experiments and commonly referred to as the "father of genetics" Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More modern genetics the st...