Cell fractionation Study guides, Class notes & Summaries

The Sensorimotor System Exam Questions and Answers What are "Labeled Lines"? ANSWER Distinct Pathways for each sensory dimension What is "Sensory Transduction"? ANSWER The conversion of electrical energy from a stimulus into a change in membrane potential (generator potential) in a receptor cell The process in which a receptor cell converts the energy in a stimulus into a change in the electrical potential across its membrane Generator Potential ANSWER Graded potential generated ...

Actin A globular protein that links into chains, two of which twist helically about each other, forming microfilaments (actin filaments) in muscle and other kinds of cells. Active transport The movement of a substance across a cell membrane, with an expenditure of energy, against its concentration or electrochemical gradient; mediated by specific transport proteins. Adenosine triphosphate (ATP) An adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are...

light microscope (LM) - visible light is passed through the specimen and then through glass lenses organelles - the membrane-enclosed structures within eukaryotic cells electron microscope (EM) - focuses a beam of electrons through the specimen or onto its surface scanning electron microscope (SEM) - the electron beam scans the surface of the sample, usually coated with a thin film of gold useful for detailed study of the topography of a specimen transmission electron microscope (TEM) - us...

What is the TD 5/5 for the kidney? - Correct Answer 23 Gy What would a QA level 1 action item require? - Correct Answer Inspection, but treatment can continue What is the backscatter factor at the level of Dmax? - Correct Answer Tissue Air Ratio (TAR) What technique can be used to accomplish forced shallow breathing? - Correct Answer Gating What are the parts of the oral cavity? - Correct Answer Floor of the mouth, retromolar trigone, gingiva, anterior 2/3 of tongue, hard palate W...

2024 AQA AS BIOLOGYPAPER 2 2022 / 2024 AQA AS BIOLOGY Paper 2 Question Paper & Mark scheme (Merger) Glycolipid - ANS-A carbohydrate covalently bonded with a lipid. They act as recognition sites, help maintain stability of the membrane and help cells attach to one another. Cholesterol - ANS-Lipid that is an important component of cellsurface membranes because it adds strength. Excess in the blood can lead to atheroma. Permeability - ANS-How permeable a substance is depends on the...

Biology Midterm Latest Update Rated A cell membrane thin,flexible barrier around the cell; regulates what goes in and out of the cell cell wall strong supporting layer around the cell membrane in plants, algae, and some bacteria chloroplast captures the energy from sunlight and converts it to chemical energy cytoplasm material inside cell membrane-not including the nucleus cytoskeleton network of protein filaments within some cells that helps the cell maintain its shape and is involved in ma...

ARRT BOARD EXAM |100% Correct Answer| 2024/2025 Study year What is the TD 5/5 for the kidney? *Ans* 23 Gy What would a QA level 1 action item require? *Ans* Inspection, but treatment can continue What is the backscatter factor at the level of Dmax? *Ans* Tissue Air Ratio (TAR) What technique can be used to accomplish forced shallow breathing? *Ans* Gating What are the parts of the oral cavity? *Ans* Floor of the mouth, retromolar trigone, gingiva, anterior 2/3 of tongue, hard palate ...

Rad Bio Exam Review Questions and answers, graded A+/ verified. radiation hormesis - -theory that ionizing radiation is benign at low levels of exposure. low levels of natural background radiation can be beneficial. epilation - -hair loss from radiation erythema - -skin reddening from radiation Law of Bergonie and Tribondeau - -stems cells more radiosensitive, higher metabolic cell activity= more radiosensitive. direct effects - -direct ionization along charged particles. originial ioni...

Bio Chapter 6The smallest cell structure that would most likely be visible with a standard (not super- resolution) research-grade light microscope is a _____. A) mitochondrion B) microtubule C) ribosome D) microfilament A In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is the _____. A) relative solubility of the component B) size and weight of the com...

Cell theory - -All organisms are made of cells -The cell is the simplest collection of matter that can be alive -Cells are near the middle of the biological size range scanning electron microscope - Focus electrons onto the surface of a specimen, providing images that look 3-D Transmission Electron Microscopes - focus a beam of electrons through a specimen cell fractionation - Takes cells apart and separates the major organelles from one another centrifuges fractionate cells into thei...