best grades

MHA Bundled Exams Questions and Answers (2024/2025) (Complete and Accurate)

Antiquity - 500AD - 500BC Medieval - 500 - 1400 - Monophonic (plain chant) Renaissance - - Polyphonic voice lines (motet & madrigal), added bass instruments Baroque - - Counterpoint, small orchestras (flutes, oboes, horns, and violins), harpsichord and organ become more popular Classical - - Strings, opera, symphony, and chamber music Romantic - - More expressive, free-form, middle class music education, nationalism 20th Century - - Rejection of common practice Important Medie...

The concept of treating all samples, whether known or unknown, as potentially hazardous (or pathogenic) materials is known as _____. - universal precautions List at least 3 observations a researchers would be sure to note while assessing an unknown microbial sample. - size and shape, motility, gram status, color change, chemical reactions While observing an unknown sample of limited amounts, a researcher must determine motility and Gram status using the same sample. What would you determine...

True or false: metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life. - True True or false: enzymes slow down chemical reactions to conserve energy - false, they speed up (catalyze) chemical reactions The term for metal ions that assist enzymes during the catalysis reaction - cofactors What is catabolism? - The process of breaking down larger molecules into useful energy sources Upon cellular injury, which metabolic process is inv...

Microbiology is the study of what? - My answer: Microbiology is the study of microorganisms and their biological processes at what is called the "micro" or "microscopic" level. Answer Key: Microbiology is the study of microbes (microorganisms and viruses) and their biological processes. What is the smallest biological unit of life? - the cell What is a macromolecule? - My answer: Macromolecules are large and complicated molecules that are made up of smaller molecules. Examples of macr...

• In 1844, Samuel Morse and Alfred Vail sent the first telegraph message between Washington, D.C., and Baltimore, Maryland. • In 1861, Western Union laid the first transcontinental telegraph line. • In 1866, the first permanent telegraph cable was laid across the Atlantic Ocean. What impact did this innovation have on daily life? - It became a major method of long-distance communication for many years. Southern Colonies vs. New England Colonies - development of different economies in ...

microorganisms - organisms that are too small to be seen with an unaided eye microbes in our lives - <1% pathogenic decompose organic waste produces by photosynthesis industrial chemicals fermentation outnumber us What are some eukaryotic cells? - fungi, protozoans, algae What are some prokaryotes? - bacteria, viruses(not a cell) What word describes that microbes are everywhere, all around us? - they are ubiquitous What is an example of a microbe? - polar bear hairs are hollow in wa...

How are thermal death point and thermal death time different? - Thermal death point is the lowest temperature that kills all cells in a broth in 10 minutes. Thermal death time is the time required to completely sterilize a particular volume of liquid at a given temperature. Is moist heat more effective than dry heat? - Because of its ability to penetrate microbial cells, moist heat kills microogranisms by denaturing their proteins. Sterilization can be achieved at lower temperatures in a sh...

bactericidal - ____________ antibiotics kill bacteria. Ex: antiseptics and prescribed antibiotics bacteriostatic - ________________ antibiotics inhibit the growth of bacteria and resulting in a reduced number of bacteria; they work with the immune system to remove the microbes from the body. -ex: sanitizers and disinfectants mechanisms of action - There are four ________________ ____ __________ for antibiotics. cell wall synthesis - The first mechanism of action of antibiotics is disrupti...

Describe the selective and differential properties of mannitol salt agar (MSA) for the isolation and identification of staphylococci. - As a selective medium, MSA has a high concentration of salt (7.5% NaCl), which is inhibitory to most bacteria other than the staphylococci. As a differential medium, MSA contains the sugar mannitol as a substrate for fermentation and phenol red as a pH indicator to detect the production of acid. S. aureus ferments mannitol and changes the color of the mediu...