Phospholipid bilayer Study guides, Class notes & Summaries
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PCOL355 Final Test Questions with Correct Answers
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PCOL355 Final Test Questions with Correct Answers 
Which of the following cells secrete anti-coronavirus antibodies? 
-Activated B cells 
-Antigen-presenting cells 
-T-helper cells 
-Cytotoxin T cells - Answer-Activated B cells 
 
PTX-loaded PEG-EB2 had a faster PTX release over Taxol. 
True/False - Answer-False 
 
Pfizer-BioNTech developed Comirnaty, and Moderna developed SPikevas, two widely used COVID-19 nanovaccines using micelles nanoparticles. 
True/False - Answer-False 
 
Centrifugation ...
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ATI TEAS 7 2023
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Liver cells have an especially large network of _______ because the liver removes 
waste products from the bloodstream 
smooth endoplasmic reticulum 
What is biased language 
excludes or stereotypes people on gender or other physical or mental traits 
What is formal English? 
uses full words, avoiding contractions. If one must use an acronym, it should be 
spelled out first. Uses an objective tone and avoids first- and second-person 
pronouns 
Formal language follows 
conventional rules and is u...
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BIOL 1P91 – Final EXAM .OVER 280 QUESTIONS WITH VERIFIED CORRECT ANSWERS
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BIOL 1P91 – Final EXAM .OVER 280 
QUESTIONS WITH VERIFIED CORRECT 
ANSWERS 
Holds the cell together and controls what goes in and out - 
ANSWER cell membrane 
separates cell contents from the surrounding environment - 
ANSWER plasma membrane 
uptake and export of ions and molecules, cell 
compartmentalization, protein storing, anchoring cytoskeleton, 
production of ATP and NADPH, cell signalling, cell and nuclear 
division, and adhesion of cells to each other and to the 
extracellular...
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IB Bio HL I Semester 1 Exam Review with Certified Solutions
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IB Bio HL I Semester 1 Exam Review 
 
with Certified Solutions 
 
Outline the Cell Theory -All organisms are composed of one or more cells 
-Cells are the smallest unit of life 
-All cells come from pre-existing cells 
 
Discuss the evidence for Cell Theory -Robert Hooke uses microscope to observe living cells 
-Louis Pasteur performs chicken broth experiment to prove that cells come from pre-existing 
cells 
 
Outline the therapeutic uses of stem cells -Implanted stem cells to rebuild brain tis...
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IUPUI BIOLOGY K101 FINAL EXAM 2024 WITH 100% CORRECT ANSWERS
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Stanley Miller's 1953 experiments demonstrated conclusively that...Answer - organic molecules can be synthesized abiotically under conditions that may have existed on early Earth. 
 
In a single molecule of water, the two hydrogen atoms are bonded to a single oxygen atom by...Answer - polar covalent bonds 
 
What do the four 'elements of life' -carbon, hydrogen, and nitrogen-have in common?Answer - They all have unpaired electrons in their valence shells. 
 
Water is able to form hydrogen ...
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MIC 205 exam 3 Daydif questions with correct answers
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Viruses are CORRECT ANSWER obligate intracellular parachutes 
 
what do viruses not have CORRECT ANSWER organelles, cytoplasmic membrane, cytosol, can't carry out metabolic reaction, don't grow n size or respond to environment, cannot reproduce independantly 
 
virions CORRECT ANSWER when virus is outside of host 
-possess a protein coat called capsid 
-capsid surround and protects nucleic acid(viral genome) 
 
viral envelope CORRECT ANSWER -present on some animal viruses 
-phospholipid bilaye...
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Phospholipid Bilayer question n answers graded A+ 2023/2024
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Phospholipid Bilayer 
Phospholipid - correct answer consists of a somewhat circular phosphate group head, and two long , fatty acid chain tails 
 
Hydrophilic Head - correct answer Its attracted to water and arranged to be closest to the water molecules 
 
Hydrophobic Tail - correct answer Are repelled by water and arranged to be farthest from water molecules 
 
Carbohydrate Chain - correct answer substance on the plasma membrane helps identify chemical signals from outside the cell and define c...
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BIOL 1107 Final Exam (Answered) Complete Verified Solution 100%
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BIOL 1107 Final Exam (Answered) Complete Verified Solution 100% 
 
The interior region of a phospholipid bilayer is characterized as: 
Hydrophobic 
The movement of water across a cell plasma membrane into or out of a cell is an example of: 
Both osmosis and diffusion. 
In the example of secondary active transport, what would happen if ATP suddenly became unavailable for Step 1 in Panel a. of the figure shown? 
The movement of the molecules through the anti-porter would continue for a while until...
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Life: The Science of Biology, Ninth Edition Sadava • Hillis • Heller • Berenbaum CH 6 Cell Membranes
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Cell Membranes 
 
TEST FILE QUESTIONS AND ANSWERS 
(By Catherine Ueckert) 
 
Multiple Choice 
 
1.	The compounds in biological membranes that form a barrier to the movement of hydrophilic materials across the membrane are 
a.	integral membrane proteins. 
b.	carbohydrates. 
c.	lipids. 
d.	nucleic acids. 
e.	peripheral membrane proteins. 
Answer: c 
Textbook Reference: 6.1 What Is the Structure of a Biological Membrane? 
Page: 106 
Bloom’s Category: 1. Remembering 
 
2.	The plasma membrane of an...
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AQA A-Level Biology Paper 1 2023 Q&A
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Describe the role of a ribosome in the production of a polypeptide. /3 - Correct answer1. mRNA binds to ribosome; 
2. Idea of TWO codons/binding sites; 
3. tRNA with ANTICODONS binds; 
4. (Catalyses) formation of PEPTIDE bond between AMINO ACIDS (held by tRNA 
molecules); 
5. Moves along (mRNA to the next 
codon); 
Describe the structure of glycogen. /2 - Correct answer-1. Polysaccharide of α-glucose; 
OR 
polymer of α-glucose; 
2. (Joined by) glycosidic bonds 
OR 
Branched structure; 
NHE3 ac...