BIO 171 Final Exam (GRADED A) Questions and Answers | Portage Learning

Final Exam Due No due date Points 120 Questions 30 Time Limit 90 Minutes Instructions The Final Exam is composed of questions based upon material presented in the entire course. It will asses s your level of mastery of the course content and goals. The format of the exam is similar to past module exams. You are about to begin a timed exam. Please make sure you are in a suitable, quiet place, free from distraction. Attempt History Attempt Time Score LATEST Attempt 1 89 minutes ALL CORRECT * Some questions not yet graded Uncoating: Release: Replication: Attachment: Entry: New infection: Your Answer: 1. Attachment: This is where the virus attaches to the host cell 2. Entry: The virus pushes through, to enter the host cell 3. Uncoating: The virus breaks apart, while entering ito thr cytoplasm 4. Replication: The virus does through the process of reproducing new viral proteins 5. Release: The new formed viruses are released 6. New infection: New viruses are formed and vacate the host cell Answer: 1-Attachment 2- Entry: the virus fuses with the host membrane and enters the cell 3- Uncoating 4-Replication 5-Release 6-New infection A multi-purpose media capable of growing a wide variety of microorganisms. Correct Answer Trypticase Soy Agar ou Answered Also known as lysogeny broth, it is a multi-purpose media capable of growing a wide variety of microorganisms. Correct Answer LB Agar ou Answered Pale red in color and is both selective and differential media. The presence of crystal violet and bile salts in its formulation restricts Gram- positive bacterial growth. As such, only Gram- negative microbes can be grown. Correct Answer MacConkey Agar Correct! This Agar is selective for Gram-positive bacteria and can differentiate members of the Staphylococci family. Match each type of microscopy with the correct description. ou Answered The simplest form of light, or optical, microscopes. Light, most often emitted from a standard halogen bulb, enters the microscope from the base (bottom) and is reflected via mirrors towards the sample. Correct Answer Bright Field Microscope ou Answered Incoming light is in the form of the ultraviolet (UV) spectrum. Correct Answer Fluorescence Microscope ou Answered Can provide detailed images of live cells without staining. Correct Answer Phase Contrast Microscope ou Answered Use of beams of electrons (rather than light) to increase its resolution capacity to less than 1nm —that’s 200x. Correct Answer Electron Microscope ou Answered Combines the usefulness of fluorescence microscopy with the ability to visualize cells in 3-D Correct Answer Confocal Microscope ou Answered This microscope reflects light off of the specimen at an angle rather than light passing through the specimen. Quiz Score: 45 out of 120 Show Less