Cell fractionation - Study guides, Class notes & Summaries
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AQA A-Level Biology Questions with Answers | Graded A
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AQA A-Level Biology Questions with Answers | Graded A 
Glucose is absorbed from the lumen of the small intestine into epithelial cells. Explain 
how the transport of sodium ions is involved in the absorption of glucose by epithelial 
cells. (5 marks) [Unit 1, June 16] - Correct Answer ️️ -1. Na+ ions leave epithelial cell 
and enter blood; 
2. (Transport out is by) active transport / pump / via carrier protein using ATP; 
3. So, Na+ conc. in cell is lower than in lumen (of gut); 
4. Sodium/N...
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BIO 181 North Carolina State University -BIO-181 Quiz 2 GCU with answers
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BIO-181 Quiz 2 GCULight Microscopy - correct answer The use of any kind of microscope that uses visible light to observe specimens 
 
Electron Microscopy - correct answer uses a beam of electrons to create an image of the specimen 
 
Cell Fractionation - correct answer The disruption of a cell and separation of its organelles by centrifugation. 
 
Cell Size and Surface Area - correct answer A cells efficiency depends on its size. If the larger the cell the less efficient the cell is especially i...
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AQA A-Level Biology. 3.2 – Cells questions and answers 100% guaranteed success.
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AQA A-Level Biology. 3.2 – Cells questions and answers 100% guaranteed success. 
 
 
 
 
 
 
 
 
Structure of Nucleus. - correct answer. 1. Nuclear envelope: double membrane surrounding nucleus, outer membrane continuous with the (R)ER of the cell. 
 
2. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. 
 
3. Nucleoplasm: granular, jelly-like material making up the bulk of the nucleus. 
 
4. Chromosomes: protein-bound, linear DNA. 
 
5. Nucleolus: small...
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ARRT SAFETY REVIEW QUESTIONS WITH 100% CORRECT ANSWERS!!
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Which cell types have the lowest radiosensitivity: 
nerve cells 
muscle cells 
spermatids 
lymphocytes - nerve cells (except in fetal life, they are highly radiosensitive) 
Which cells are the most radiosensitive in the body - lymphocytes 
Which interaction between x-ray photons and matter involves a high energy photon and the ejection of 
an outer shell electron? 
photoelectric effect 
coherent scatter 
Compton scatter 
pair produciton - Compton scatter 
What is likely to occur if 250 mGy is ac...
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Biology 1406 Exam 2 Review (chapters 6,7,8) Collin College - Question and answers rated A+
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Biology 1406 Exam 2 Review (chapters 6,7,8) Collin College - Question and answers rated A+ Biology 1406 Exam 2 Review (chapters 6,7,8) 
 
 
Name the scientists who first studied cells and mention their contributions. - correct answer Robert Hooke: first person to view cells, first person to build a microscope. Antonie van Leeuwenhoek: first person to view living cells (bacteria, pond water) .Matthias Schleiden and Theodore Schwann (1830): proposed the cell theory (all living things are composed ...
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Biology 1107 Exam 2 Kennesaw State University Questions And Answers With Verified Solutions
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Light Microscope - -visible light is passed through a specimen 
Magnification - -ratio of image to real size 
Resolution - -image clarity 
Contrast - -difference in brightness 
Cell fractionation - -Takes cells apart 
-separate organelle 
-Determine function of organelles 
Prokaryotic Cell - -NO nucleus 
-DNA is unbound region (nucleoid) 
Eukaryotic cells - -DNA is in nucleus 
-membrane bound organelles 
-larger then prokaryotic cells 
The Nucleus - -Cell's genes 
-DNA in chromosomes 
Nucleolus...
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BIOD 101 PRACTICE EXAM 2023-2024 QUESTIONS WITH ANSWERS NEW GENERATIONS
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BIOD 101 PRACTICE EXAM QUESTIONS WITH ANSWERS NEW GENERATIONS 
 
Organelles of the endomembrane system include all of the following EXCEPT: 
 
a. endoplasmic reticulum 
b. lysosomes 
c. mitochondria 
d. endosomes 
e. Golgi complex 
c. mitochondria 
Which one of the following is a FALSE statement about secretory pathways? 
 
a. materials produced in the endoplasmic reticulum may leave the cell by phagocytosis 
b. during constitutive secretion, materials are continually secreted from the cell 
c....
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ARRT BOARD EXAM 2024 with Guaranteed Correct Answers
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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...
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Biology 1406 Chapter 6 well answered
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Biology 1406 Chapter 6 well answered Light Microscope - correct answer (microscope) where visible light is passed through the specimen and then through glass lenses. The lenses refract the light in such a way that the image of the specimen is magnified. Used to study organelles 
 
Parameters In Microscopy - correct answer Magnification is the ratio of an object's image size to its real size. 
Resolution is a measure of the clarity of the image. 
Contrast accentuates differences in parts of the...
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Campbell Biology Ch. 6 - 7 Test Bank Questions & 100% Correct AnswersLatest Test | Graded A+ | Passed
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1) When biologists wish to study the internal ultrastructure of cells, they can achieve the 
finest resolution by using 
A) a phase-contrast light microscope. 
B) a scanning electron microscope. 
C) a transmission electronic microscope. 
D) a confocal fluorescence microscope. 
E) a super-resolution fluorescence microscope. 
֎ -:- C 
2) The advantage of light microscopy over electron microscopy is that 
A) light microscopy provides for higher magnification than electron microscopy. 
B) light mi...
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