Portage Learning Microbiology Final Exam

Portage Learning Microbiology Final Exam
Final Exam - Requires Respondus LockDown Browser + Webcam
The Final Exam is composed of questions based upon material presented in the entire course. It will assess 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.
Briefly explain how a Scanning Transmission Electron Holography Microscope (STEHM) works and
what it is specifically used to see.
Your Answer:
Question 1 4 / 4 pts
Match each of the following organelles with the correct description.
Nucleus Contains genomic content i
Endoplasmic reticulum Series of membrane-enclos
Lysosomes Contain hydrolytic enzymes
Chloroplasts Site of photosynthesis
Portage Learning Microbiology Final Exam
It emmits electrons instead of beams of light. The electrons will pass through the sample and allow for
viewing. SEM and TEM are used differently, one looks at the outside shell of sample or cell and the
other looks at the inside of the cell. One is a 3-D image and the other is 2D.
Answer: An image is formed using an electron beam but coupled with a holography
technique to study surfaces of proteins and subcellular structures. A STEHM has the
capacity to magnify subatomic structures up to 20 million times larger than what can be
viewed with the naked eye.

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