Iris diaphragm - Study guides, Class notes & Summaries

Course Objectives: Cultivation of samples: growth conditions and equipment used Identification of samples: biochemical assays & tests available Evaluation of samples: microscopy- visualization and key characteristics of specimens Basic Equipment: Cleaning: Autoclave 125°C- uses heat, pressure, & steam to sterilize; autoclave will take minutes to sterilize & hot dry air which will take hours; before opening make sure it is depressurized and will have very hot air. Growing (bacteria/patho...

BIOD 171 Portage Learning Final EXAM Questions and Answers 100%Correct/Exam 1-7 2023/2024 UpdatePortage Learning BIOD 171 Final EXAM Questions and Answers 100%Correct/Exam 1-7 2023/2024 Update True or False: A virus is considered a microorganism. False. Viruses are not living and as such are not considered microorganisms. Viruses can, however, be classified as microbes, a more general term that includes microorganisms and viruses. 1. What is the smallest biological unit of life? A cell. ...

Microbiology Lab Midterm Questions and Answers Already Passed Compound microscope 1. Ocular-eyepiece lens (usually 10x) 2. Objective-nosepiece lenses (commonly 4x, 10x, 45x, and 100x) At what magnification do you use the oil immersion technique? 100x. Total Magnification = Magnification (Objective) x Magnification (Ocular) Important Parts of the Microscope Framework, Stage, and Lens System Framework Arm and base are the structural parts of the microscope which support the basic frame. Stage...

Biol 227 Lab Exam Latest Update with Verified Solutions Acoelomate (Platyhelminthes) planaria. has eyespots , auricles, incomplete digestion, pharynx, dorsoventrally flattened acoelomate filled with parenchyma derived from mesoderm albumen egg white, just under shell, supples water, nutrients, o2 allantois collects waste allantois in mammals tube that fuses with chorion to form chorioallantoic placenta Allomyces Chytridiomycota Alveolata A protistan clade that includes d...

Who is the father of microscopy? Antonie van Leeuwenhoek Lamp: produces visible light to illuminate the specimen Condenser: collects light and directs it through the stage opening (converges or focuses the rays of light to a single point) Iris diaphragm: regulates the amount of light available to the objective lens Factors that affect microscope function: Resolving power, numerical aperture, magnification, working distance Resolving power: ability of a microscope to differentiate two ...

CSMLS Questions With Verified Correct Answers New Update 2024 A+ Graded Which of the following actions should be taken first when a new co-worker consistently fails to replenish analyzer reagents at the end of their shift? - ANS-Discuss the concern with the co-worker directly What is the term for the moral obligation a health care professional has to keep patient health information private? - ANS-Not privacy lmao Pale cytoplasmic staining w/ H&E or lacks three distinct shades of pink - AN...

Antonie Van Leeuwenhoek Correct Answer-Dutch merchant, microbiologist. Discovered the microbial world. Called microbes, "animacules". Constructed over 250 microscopes that could magnify up to 300 times. Condenser Correct Answer-Focuses light through specimen. Iris diaphragm Correct Answer-Controls the amount of light entering the condenser. Resolving Power Correct Answer--Ability of a microscope to differentiate two closely spaced objects as being distinct from one another. -Can dist...

A nanometer is defined as: A. 10-3 B. 10-6 C.10-9 D. 10-12 C. A nanometer is defined as one-billionth of a meter. 2. True or False: A nanometeris longer than a micrometer. False. A nanometer is 1,000 times smaller than a micrometer. 1. Resolution and contrast are two critical factors that influence your ability to see an object. Explain each. Resolution refers to the distance between two objects at which the objects still can be seen as separate. Poor or low resolution means two (or mor...

Bio 253 Practical 1 All Answers Correct Mitochondria is the site of ATP production/powerhouse 1 Protein synthesis is formed in the the ribosomes 2 (dots on the rough ER) Brainpower Read More lipid synthesis is conducted in the smooth endoplasmic reticulum 6 The nucleus is thecontrol center containing DNA 4 The nucleolus is responsible for the production of ribosomes located inside the nucleus 8 centrioles makes spindle fibers for cell division 5 Cell membrane controls what ente...

Portage Learning: Microbiology Module 3 Already Graded A Define the measurements micrometer and nanometer. A micrometer (μm) is defined as being one-millionth of a meter and is commonly designated at 10-6 meters. A nanometer (nm) equals 10-9 m or one-billionth of a meter. What are the two critical factors that influence your ability to see an object? Resolution and contrast. Resolution refers to the distance between two objects at which the objects still can be seen as separate. Poor or low r...