Hershey and chase Study guides, Class notes & Summaries

ASU BIO 340 Exam 1 latest update questions and answers fall winter 2022 In Griffith's experiments, what made the harmless R cells grow capsules when exposed to heat-killed S cells? a. Protein b. DNA c. Lipids d. Polysaccharides b. DNA In the Hershey-Chase experiment radioactive Sulfur was used to: a. Be incorporated into the phage DNA because of its numerous sulfur atoms b. Be incorporated into the phage protein coat because of its numerous phosphorous atoms c. Be incorporated i...

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Test Bank for Alcamos Fundamentals of Microbiology 9th Edition by Pommerville Test Bank for Alcamos Fundamentals of Microbiology 9th Edition by Pommerville Chap01, Chapter 1 Multiple Choice 1. Who was one of the early natural philosophers who coined the name “cella” for the empty cork spaces that became the word we use today, “cells”? A. Robert Hooke B. Zacharias Janssen C. Francesco Stalluti D. Giovanni Faber Ans: A 2. Leeuwenhoek made lenses that allowed him to magnify o...

Hershey and Chase performed an experiment in order to determine how bacteriophages infect bacteria. What did they find? CORRECT ANSWER The bacteriophage injects DNA into the host cell. This was found because, after centrifugation, the pellet was radioactive The largest difference between a Gram + and Gram - bacterial cell is: CORRECT ANSWER The gram + cell has a much thicker peptidoglycan layer Why does a Gram + cell stain blue/purple in a gram stain? CORRECT ANSWER The Gram + cell stains ...

Which of the following early discoveries supports the idea that chromosomes carry the genetic information? i. Chromosomes segregate during meiosis ii. Chromosomes segregate during cell division iii. Chromosomes are made of protein iv. Mutations can be linked to specific chromosomes, such as sex chromosomes - correct answer i, ii, and iv In the early 1940's, many scientists thought that proteins and not DNA were responsible for the genetic inheritance of characters. If this opinion ha...

What statement best distinguishes scientific hypotheses from scientific theories? - ANSWER Hypotheses are usually narrower in scope; theories have broader explanatory power. A controlled experiment ____________. - ANSWER includes at least two groups, one of which does not receive the experimental treatment In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which fact? - ANSWER DNA contains phosphorus, whereas protein does not. In analyzi...

Anton van Leeuwenhoek - ANSWER Linen merchant that discovered the first microscope and saw living cells Oswald Avery - ANSWER Worked with strains of Pneumonia to determine genetic changes Robert Koch - ANSWER Correlated specific microbes with infections Gregor Mendel - ANSWER Worked with pea plants to show heredity patterns Carolus Linnaeus - ANSWER Zoologist that created the current naming system Alfred Hershey and Martha Chase - ANSWER Worked with bactiophage to show that DNA no...

ASU BIO 340 Exam 1 Questions & Answers 2024 selective breeding (artificial selection) - ANSWER-the process of developing organisms with specific characteristics as chosen by the breeders Gregor Mendel () - ANSWER-Amateur botanist who published an explanation of hereditary transmission in plants in 1866. Known for his pea-plant experiments and commonly referred to as the "father of genetics" modern genetics - ANSWER-the study of heredity and the variation of inherited characteristics...

Hershey and Chase performed an experiment in order to determine how bacteriophages infect bacteria. What did they find? The bacteriophage injects DNA into the host cell. This was found because, after centrifugation, the pellet was radioactive The largest difference between a Gram + and Gram - bacterial cell is: The gram + cell has a much thicker peptidoglycan layer Why does a Gram + cell stain blue/purple in a gram stain? The Gram + cell stains blue/purple because crystal violet rem...

1. Griffith's experiments with heat killed pathogenic bacteria and live non-pathogenic bacteria indicated something from the dead bacteria could do something to the living, non-pathogenic bacteria that he called transfor- mation. What changes were observed in colony appearance and pathogenic- ity?: When the heat-killed S cells were mixed with the living R cells they combined and formed living S cells- smooth encapsulated cells 2. What biological macromolecule did Avery, McCarty, and MacLeod i...