Biology 121 Exam 3 Study Guide ACTUAL
UPDATED Exam Questions and
CORRECT Answers
Central dogma - CORRECT ANSWER - describes how genetic information provides info for
cells
Nucleotide - CORRECT ANSWER - monomer of nucleic acids made up of a 5-carbon sugar,
a phosphate group, and a nitrogenous base
Heredity - CORRECT ANSWER - Passing of traits from parents to offspring
Frederick Griffith (1928) - CORRECT ANSWER - discovered transformation in bacteria
Avery, MacLeod, McCarty (1944) - CORRECT ANSWER - Repeated Griffith's experiment
using purified cell extracts
Removal of all protein from the transforming material did not destroy its ability to transform R
strain cells
DNA-digesting enzymes destroyed all transforming ability
Supported DNA as the genetic material
Hershey-Chase (1952) - CORRECT ANSWER - concluded that the genetic material of the
bacteriophage was DNA, not protein.
Rosalind Franklin (1952) - CORRECT ANSWER - Took an x- ray photo of DNA that shows
it looks like a helix.
Watson & Crick (1953) - CORRECT ANSWER - determined double helix structure of DNA
, Bacteriophage: - CORRECT ANSWER - A virus that infects bacteria
DNA is ordered in a - CORRECT ANSWER - 5' Phosphate to 3' Hydroxyl
Nitrogenous bases can pair together by - CORRECT ANSWER - Hydrogen Bonding
Base pairing - CORRECT ANSWER - the nearly perfect fit between A-T and G-C
nucleotides
Complementary - CORRECT ANSWER - Bases on opposite ends of double strand
Antiparallel - CORRECT ANSWER - Strands run in opposite directions
Properties of DNA - CORRECT ANSWER - Stores genetic information
Can be replicated
Can change (evolve) by mutation
Nucleoid - CORRECT ANSWER - A non-membrane-enclosed region in a prokaryotic cell
where its chromosome is located.
Nucleus - CORRECT ANSWER - Membrane bound region, with small pores, where
eukaryotic chromosomes are stored
Problem: DNA Tangling - CORRECT ANSWER - Solution: DNA Packaging
Histone - CORRECT ANSWER - positively-charged proteinsthat wrap around and organize
DNA
UPDATED Exam Questions and
CORRECT Answers
Central dogma - CORRECT ANSWER - describes how genetic information provides info for
cells
Nucleotide - CORRECT ANSWER - monomer of nucleic acids made up of a 5-carbon sugar,
a phosphate group, and a nitrogenous base
Heredity - CORRECT ANSWER - Passing of traits from parents to offspring
Frederick Griffith (1928) - CORRECT ANSWER - discovered transformation in bacteria
Avery, MacLeod, McCarty (1944) - CORRECT ANSWER - Repeated Griffith's experiment
using purified cell extracts
Removal of all protein from the transforming material did not destroy its ability to transform R
strain cells
DNA-digesting enzymes destroyed all transforming ability
Supported DNA as the genetic material
Hershey-Chase (1952) - CORRECT ANSWER - concluded that the genetic material of the
bacteriophage was DNA, not protein.
Rosalind Franklin (1952) - CORRECT ANSWER - Took an x- ray photo of DNA that shows
it looks like a helix.
Watson & Crick (1953) - CORRECT ANSWER - determined double helix structure of DNA
, Bacteriophage: - CORRECT ANSWER - A virus that infects bacteria
DNA is ordered in a - CORRECT ANSWER - 5' Phosphate to 3' Hydroxyl
Nitrogenous bases can pair together by - CORRECT ANSWER - Hydrogen Bonding
Base pairing - CORRECT ANSWER - the nearly perfect fit between A-T and G-C
nucleotides
Complementary - CORRECT ANSWER - Bases on opposite ends of double strand
Antiparallel - CORRECT ANSWER - Strands run in opposite directions
Properties of DNA - CORRECT ANSWER - Stores genetic information
Can be replicated
Can change (evolve) by mutation
Nucleoid - CORRECT ANSWER - A non-membrane-enclosed region in a prokaryotic cell
where its chromosome is located.
Nucleus - CORRECT ANSWER - Membrane bound region, with small pores, where
eukaryotic chromosomes are stored
Problem: DNA Tangling - CORRECT ANSWER - Solution: DNA Packaging
Histone - CORRECT ANSWER - positively-charged proteinsthat wrap around and organize
DNA
