Helix structures Study guides, Class notes & Summaries
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UNIT 1 - Quizzes and Exam, UNE medical biochemistry Unit 1 Test Questions and Answers Solved 100% Correct!!
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Which of the following amino acid would not be commonly found in the middle of a an α-helical 
domain? - Proline. 
It is considered a 'helix breaker' and would not be found in an alpha helix; all other residues are 
nonpolar hydrophobic and could reside in a transmemebrane domain. 
Changes in the physiological variables listed below can alter the affinity of hemoglobin for oxygen. 
Which of the following will lower the affinity of hemoglobin for oxygen? 
a) decrease in protons 
b) increase in...
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NR 302 Health Assessment Final Exam Latest Update 2024 Verified Questions and Answers
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The retinal structures viewed through the ophthalmoscope are: 
optic disc, vessels, macula, background 
 
 
"Positive consensual light reflex" means... 
simultaneous constriction 
 
 
The thickening and yellowing of the lens due to aging is described as: 
cataract 
 
 
Eye emergency 
sudden change in vision 
 
 
Visual acuity is assessed with: 
Snellen eye chart 
 
 
The cover test is used to assess for: 
muscle weakness 
 
 
When using the ophthalmoscope, you would: 
remove your own glasses a...
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TTU Biology 1402 Exam 2- Dr. Held Latest Update Already Passed
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TTU Biology 1402 Exam 2- Dr. Held 
Latest Update Already Passed 
 
Karyotyping (#chromosome) -To determine if the patient has an abnormal # of chromosomes 
- "A photographic inventory of an individual's chromosomes." 
- ordered display of chromosomes, doubled. 
 
Criss- Cross Inheritance Sons inherit their X chromosome from their mother 
 
Codominance -The heterozygote expresses both traits (alleles). -"A" and "B" genes make 
structures (not enzymes)= sugar types. 
-Ex) Blood types (A,B, ...
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UNE Biochem 1005 Final Study Set Questions With Complete Solutions.
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UNE Biochem 1005 Final Study Set Questions With Complete Solutions. 
 
Which of the following best describes the structure of heme? 
-a nicotinamide structure that is readily oxidized 
-a negatively charged phosphate group 
-a planar porphyrin ring that binds iron 
-an n-link glycosylation 
A planar porphyrin ring that binds iron 
Covalent catalysis is used by many enzymes to cleave peptide bonds. Which of the following amino acids would not facilitate this type of catalysis? 
-valine 
-cysteine...
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BIO 220 Final Exam 2023/2024 with 100% correct answers
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A spiral shape constituting one form of the secondary structure of proteins, arising from a specific hydrogen-bonding structure. - correct answer alpha helix 
 
One form of the secondary structure of proteins in which the polypeptide chain folds back and forth, or where two regions of the chain lie parallel to each other and are held together by hydrogen bonds. - correct answer beta sheet 
 
In a polypeptide chain, the first amino acid has an exposed _______ - correct answer amino group 
 ...
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Bellas Microbiology Exam II With 100% Verified Solutions | Updated & Verified | 2024
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Prokaryote Characteristics - - No membrane surrounding their DNA; no nucleus 
- Lack organelles - internal membrane-bound structures 
- Small; ~1.0 μm in diameter (RBC ~10 μm) 
- Simple structure 
Prokaryote Types - Bacteria & Archaea 
Prokaryote External Structures (3) - Glycocalyces, Flagella and Fimbrae & Pilli 
Gycocalyx - "Sugar cage" - Polysaccharides 
- Capsule & Slime Layer 
Capsule - Hard glycocalyx with consistent structure around prokaryote 
Slime Layer - Inconsistent outsider lay...
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CHEM 210 Module 6 Exam Questions and Answers Latest Updated 2024/2025 - Portage Learning.
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CHEM 210 Module 6 Exam Questions and Answers Latest Updated 2024/2025 - Portage Learning. In RNA, guanine always pairs with . 
Thymine 
Guanine 
Cytosine 
Uracil 
Both A and B 
CYSTOSINE 
DNA is built from which of the following? 
Nucleosides 
Genes 
Purines 
Nucleotide 
Codons 
NUCLEOTIDE 
The Z-form helix of DNA is stabilized mainly by . 
Ionic bonds 
Covalent bonds 
Hydrogen bonds 
Ion-dipole bonds 
Hydrogen covalent bonds 
HYDROGEN BONDS 
Question 1 
3 / 3 pts 
CHEM 210 Portage Learning Chem...
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NR 302 Health Assessment Final Exam with 100% Correct Answers 2023
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The retinal structures viewed through the ophthalmoscope are: - Correct answer-optic 
disc, vessels, macula, background 
"Positive consensual light reflex" means... - Correct answer-simultaneous constriction 
The thickening and yellowing of the lens due to aging is described as: - Correct answercataract 
Eye emergency - Correct answer-sudden change in vision 
Visual acuity is assessed with: - Correct answer-Snellen eye chart 
The cover test is used to assess for: - Correct answer-muscle weakne...
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UNE BIOCHEM 1005 WEEK 1 QUESTIONS WITH COMPLETE SOLUTIONS
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What are the four different protein structures? correct answer: 1. Primary 
2. Secondary 
3. Tertiary 
4. Quaternary 
 
What is the primary structure of a protein? correct answer: a linear sequence of amino acids in polypeptide chains which is written from the amino terminus (N-terminus) to the carboxyl terminus (C-terminus) 
 
What is the secondary structure made of? correct answer: a-helix, b-sheets, and bends, turns, or loops 
 
How are alpha helices formed? correct answer: They are forme...
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CHEM 210 Module 6 Exam Questions and Answers Updated 2024/2025 (Portage Learning)
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CHEM 210 Module 6 Exam Questions and Answers Updated 2024/2025 (Portage Learning) In RNA, guanine always pairs with . 
Thymine 
Guanine 
Cytosine 
Uracil 
Both A and B 
CYSTOSINE 
DNA is built from which of the following? 
Nucleosides 
Genes 
Purines 
Nucleotide 
Codons 
NUCLEOTIDE 
The Z-form helix of DNA is stabilized mainly by . 
Ionic bonds 
Covalent bonds 
Hydrogen bonds 
Ion-dipole bonds 
Hydrogen covalent bonds 
HYDROGEN BONDS 
Question 1 
3 / 3 pts 
CHEM 210 Portage Learning Chem 210 - M...
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