Bio 198 exam 1 - Study guides, Class notes & Summaries

How many ml of yeast and water would you need to create a 1/10 dilution? 1 ml of yeast suspension 9 ml of water How many ml of yeast and water would you to create a 1/100 dilution? 1 ml of yeast dilution 9 ml of water How much distilled water was taken in ml in the small beaker from the back counter of the room? 40-50 ml Spectrophotometer measures the concentration of solutions by shining a beam of light at it, the move disolved or suspended (yeast) material the solution contains, the more th...

The atomic number refers to the amount of ______ in an atom. protons Atoms in which the number of electrons does not equal the number of protons are known as _________ ions a _______ bond is formed when 2 atoms share one or more pairs of valence electrons. covalent Chemical bonds that form due to the attraction between oppositely charged atoms that have gained or lost electrons are called _________. ionic bonds A catalyst is a substance that _________ the rate of a reaction without being alt...

BIO-198 Exam 1 Questions and Answers 2024/2025( A+ GRADED 100% VERIFIED).

Techniques for estimating the number of yeast cells in a culture... - Serial dilutions - Spectrophotometer - Compound microscopes - Estimating concentrations from a calibration curve What is an important single-cell organism? Yeast If you want to dilute yeast 1/10 - how much yeast and water would be in the dilution? What about 1/30? 1/10 = 1 ml yeast/ 9 ml water 1/30 = 1 ml yeast/ 29 ml water Spectrophotometer An instrument that measures the concentration of solutions by shining a beam of li...

What is a cell? The smallest unit of life What are the 3 aspects of the Cell Theory? 1. The cell is the smallest unit exhibiting the properties of life 2. All organisms are made of 1 or more cells 3. Each new cell arises from an existing cell What is the range of an Electron Microscope? 1 nm - 100 μm What is the range of a Light Microscope? 100 nm - Approx. 1.5 mm What is the range of the Human Eye? Approx. 110 μm - < 1 m What are organelles? Membrane-bound structures within the cytopl...

Ionic bond the complete transfer of electrons, a bond between a metal and a non-metal Covalent bond electrons are shared, a bond between 2 non-metals Polar bond uneven sharing of electrons Ex. H20 Non-polar bond even sharing of electrons Ex. CH4 Lipids a diverse group of hydrophobic molecules to keep water inside and/or outside of a cell phospholipids the phosphate group of lipids that keeps water out of the cell contains a hydrophillic head with hydrophobic tails liposomes an artificia...

What is life? organisms that 1. Require energy and raw materials, 2. Sense and respond to change, 3. Pass DNA to offspring, 4. Made of up cells What are the four major proterities of life? population, community, ecosystem, biosphere Describe the success levels of life organization. atom: unit of matter Molecule: atoms bonded together Cell: smallest unit of life Organism: individual made of cells Population: group of individuals of a species in an area Community: all the populations of an ...

  1. What instruction should the nurse include in the discharge teaching plan of a client who had a cataract extraction today? a. Sexual activities may be resumed upon return home b. Light housekeeping is permitted but avoid heavy lifting c. Use a metal eye shield on operative eye during the day d. Administer eye ointment before applying eye drops 2. A male adult comes to the urgent care clinic 5 days after being diagnose with influenza. He is short of breath, febrile, and coughing gre...

1. Which information is not required for an x-ray log? a. Patient address b. Patient name c. X-ray position d. Body measurements 2. A 7 week old Labrador is coming to the clinic because of vomiting and diarrhea. Upon arrival where should the dog wait for its appointment? a. ICU b. Designated exam room c. Front lobby d. Treatment room 3. A Chihuahua needs a nail trim. Which type of appointment is most appropriate? a. Drop off b. Boarding c. Technician/Assistant d. Surgical 4. ...