2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions)

Page 1 of 6

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 1 preview image

BIO104-MidtermLabexam100% VERIFIED ANSWER2024/2025 ALREADYPASSEDSterilizationthe complete destruction or removal of allmicroorganisms, including viruses and endospores.-the organisms may be killed with steam under pressure,dry heat, radiation, chemicals or incineration-but it is an absolute valueDisinfectiona process in which vegetative (actively growing)microorganisms are destroyed on non-living objectsand surfaces (fomites)-disinfectants are only used on fomites because theytoxic and destructive to living human and animal tissues-disinfection is the destruction or removal of all microbeson fomites, except endosporesDegermers

Page 2 of 6

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 2 preview image

Page 3 of 6

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 3 preview image

agents that physically remove microorganisms from alimited area of the skin. Mostly a mechanical removalby soap and water, an alcohol swab, or other agent.-alcohol is the bestFomitesany non-living, inanimate object or surface that cancarry and transmit micoorganisms.-fomites can be safely disinfectedAntisepsisthe destruction or removal of vegetative pathogens onliving tissues (skin, mucous membranes)Antiseptics-chemical agents that can be safely applied, externally, toliving tissues (skin, mucousmembranes), to destroy or inhibit vegetative bacteria.-agent capable of producing antisepsis (theprevention of sepsis by preventing or inhibitingthe growth of disease-causing microorganisms)Sepsis1.) the growth (multiplication) of microorganisms in normallysterile tissues of the body2.) decay, contamination, purification3.) the presence of bacteria in blood that are activelymultiplying

Page 4 of 6

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 4 preview image

-an inflammatory condition caused by pathogens or their poisonsin bloodAseptic techniqueprevent all organisms from contaminating media orcontacting living tissues.-aseptic techniques are used so that:a.) you don't contaminate sterile media or pure culturesof bacteriab.) you are not contaminated by microorganismsUseful facts about bacteria that make aseptic technique important1.) bacteria are, by far, the most numerous and most widely distributed organisms2.) bacteria are the most adaptable and versatile organisms,they are found everywhere in nature, even in harsh environments where nothing else could live3.) while most bacteria are normally found in the environments to which they are adapted theyare not usually confined to those environments and instead those microorganisms found in andon you can be easily transferred toother environments (especially sterile media, pure cultures,sterile tissues)4.) so that the ability of bacteria to tolerate or take advantage of new environments and coupledwith the fact that bacteria and other microorganisms are very small and existeverywhere in hugenumbers means that special techniques and procedures are necessary for handling them5.) collectively these necessary techniques and procedures forsafely handling microorganisms (especially bacteria) arecalled aseptic techniques

Page 5 of 6

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 5 preview image

Ultrastructurethe fine (microscopic) details of organisms, tissues, and cells.Magnification-the ability of a lens, or lenses, to make an image larger-have the power of causing objects to appear larger then they are.Resolutionthe ability to see the finedetails of an image in clear sharp focusOcular lens (eye piece)the lens in a compound microscope thatyou look through and which magnifies theimage made by the objective lens. It isusually 10x.Objective lensthe lens in a compound microscope that does the initialmagnification of the specimen on the microscopeslide.40xscanning power100xlow power400x

Page 6 of 6

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 6 preview image

high power1000xoil immersion powerMorphologysize, shape, cell arrangement, and Gram staining reactionof bacteriabacillus (plural bacilli)-shape"staff" rod-shaped bacteriacoccus (plural cocci)-shape"berry" sphere or round-shapedbacteriaspiral (curved rods)-shapehelical or curved shapedVibrio-shapecomma-shaped bacteriaspirochetes-shapeflexible "S"-shapedRandom cell arrangementsingle cells, no overall arrangementDiplo cell arrangementpairs of cells

Preview Mode

This document has 19 pages. Sign in to access the full document!

Report

Learning Tools

Writing Tools

Browse Resources

2024-2025 BIO104 Midterm Lab Exam with Answers (95 Solved Questions) - Page 1

Study Now!

Document Details

Related Documents

Biology - Vascular Plants Structure and Function

Biology - The Unity and Diversity of Life

Biology - The Science of Biology

Biology - The Origin and Evolution of Life

Biology - The Chemical Basis of Life

Biology - The Biology of Cells

Biology - Support and Movement in Animals

Biology - Reproduction

Biology - Recombinant DNA and Biotechnology

Biology - Protista

Company

Explore

Study Tools