Hershey and chase Study guides, Class notes & Summaries
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BIO 171 FINAL EXAM 2 | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+
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genetic material must meet what criteria 
ANSWER: -information 
-replication 
-transmission 
-variation 
what happened in the late 1800s 
ANSWER: -biochemical basis 
-chromosomes carry genetic information 
what happened in the 1920s to 1940s 
ANSWER: -protein portion of chromosomes to be the genetic material 
explain Griffith's bacterial transformation 
ANSWER: -late 1920s Frederick griffith 
- streptococcus pneumoniae 
- staring that secrete capsules look smooth 
(fatal in mice) 
Deeagles - S...
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Bio 250 Exam 1 (Chapter 5-) || A Verified A+ Pass.
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Proteins- four things they do correct answers -building blocks for cell structures 
- form enzymes that catalyze chem reactions 
- regulate the activity of genes 
- enable cell to move and communicate 
 
junk dna correct answers dna that encodes for information not needed in the cell 
 
When can chromosomes be seen clearly correct answers during cell division 
 
Cell Division is the most.....need what? correct answers ...important bio. process, but you need a blueprint for daughter cells (inheri...
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Biology 203: Final Exam Review 100% Correct Solutions
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What cellular events occur in the G1 phase of the cell division cycle? - ANSWER normal growth and cell function 
 
What is the best way to describe homologous chromosomes? - ANSWER they carry information for the same traits 
 
In some parts of Africa, the frequency of individuals who are heterozygous for the sickle-cell anemia allele is higher than the frequency in North America, presumably because this reduces the frequency of malaria. Such a relationship is related to what? - ANSWER Darwin's ...
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Biology 203: Final Exam Review Questions and Answers with Complete Verified Solutions Graded A 2024
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What cellular events occur in the G1 phase of the cell division cycle? - normal growth and cell function 
 
What is the best way to describe homologous chromosomes? - they carry information for the same traits 
 
In some parts of Africa, the frequency of individuals who are heterozygous for the sickle-cell anemia allele is higher than the frequency in North America, presumably because this reduces the frequency of malaria. Such a relationship is related to what? - Darwin's theory of natural sel...
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IB Biology - Scientists of IB Bio 100% Correct
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IB Biology - Scientists of IB Bio 100% 
 
Correct 
 
Robert Hooke First person to observe cells and write the cell theory 
 
Ernst Ruska Developed the electron microscope in 1930s and won the Nobel Prize for it 
 
Friedrich Wohler Urea synthesis which falsified the theory of vitalism 
 
Davson-Danielli Proposed the 'protein sandwich' model for membrane structure 
 
Louis Pasteur Experiment with broth that confirmed that spontaneous generation of cells and 
organisms does not occur on Earth 
 
...
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Bio 203 Exam 4 practice test questions & answers
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What is the reason that closely linked genes are typically inherited together? - ANSWER The likelihood of a crossover event between these two genes is low 
 
All female mammals have one active X chromosome per cell instead of two. What causes this? - ANSWER Activation of the XIST gene on the X chromosome that will become the Barr body 
 
In his transformation experiments, what did Griffith observe? - ANSWER Mixing a heat-killing pathogenic strain of bacteria with a living nonpathogenic strain ca...
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BIO 111 TAMU Fletcher Exam 3 Questions and Answers 100% Solved
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BIO 111 TAMU Fletcher Exam 3 
Questions and Answers 100% Solved 
Friedrich Miescher - discovered DNA in 1869 But did not know (Isolated phosphate) rich acidic 
compounds 
Frederick Griffith - Discovered transformation during an experiment that involved injecting mice with 
smooth S cells, rough R cells, heat-killed S cells, and heat-killed S cells with living R cells. 
Avery, MacLeod, McCarty - Identified the heritable substance as DNA Used test tubes- vitro 
Hershey and Chase - performed e...
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biology 1406 exam 5 questions n answers latest update
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biology 1406 exam 5 questions n answers latest updateIn 1928, __________ was surprised to find that when he 
killed pathogenic bacteria, then mixed the bacterial remains 
with living harmless bacteria, some living bacterial cells 
became pathogenic. - correct answer Frederick Griffith 
 
In 1952, ___________ used bacteriophages to 
show that DNA is the genetic material of T2, a virus that infects the 
bacterium Escherichia coli (E. coli). - correct answer Hershey-Chase 
 
__________ are viruses ...
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Bio-Unit 6 Lesson 1 exam 2023 with 100% correct answers
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What does DNA store? - correct answer hereditary information 
 
Combining the work of other scientists with their own research, Watson and Crick discovered that two strands of DNA join together to form a(n) __________? - correct answer Double helix 
 
What are the two strands of a DNA molecule are held together by? - correct answer Hydrogen bonds 
 
An important factor in Oswald Avery's ability to identify the "transforming principle" as DNA was the fact that proteins __________? - cor...
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Biology 5235 Praxis 2 Latest Update Graded A+
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Biology 5235 Praxis 2 Latest Update Graded A+ observation the act of noticing and describing events or processes in a careful, orderly way 
hypothesis scientific explanation for a set of observations that can be tested in ways that support or reject it 
independent variable variable that is deliberately changed (manipulated variable) 
dependent variable variable that is observed and that changes in response to the independent variable (responding variable) 
control group exposed to the same cond...
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