Which molecule carries the genetic instructions for the physical characteristics of living
organisms? - *answers * DNA
In order for the genetic material to fulfill its role in cells, it must meet which of the following
criteria?
Multiple select question. - *answers * Replication, Transmission, Information, Variation
Which researchers championed the idea that a chemical substance is involved in the
transmission of traits from parents to offspring?
Multiple choice question. - *answers * Weismann and Nageli
What is the composition of a chromosome? - *answers * Protein and DNA
The English microbiologist Frederick Griffith discovered transformation while experimenting
with a bacterium now classified as ______. - *answers * Streptococcus pneumoniae
DNA controls the ______. - *answers * Characteristics of organisms
Ability of a fertilized egg to develop into an adult organism
The individuals who brought clarity to the late 19th century notion in genetics that living
organisms possess a blueprint that has a biochemical basis. - *answers * Weismann and Nageli
The cell structure that contains DNA is the ______. - *answers * Chromosome
The bacterium Streptococcus pneumoniae causes the disease _________, which can be fatal -
*answers * pneuomonia
,UIUC MCB 150 - Unit 4: Genetics
Why did the injection of dead smooth bacteria not kill Griffith's mice? - *answers * Because
dead bacteria are unable to cause disease
Which molecule carries the genetic instructions for the physical characteristics of living
organisms?
Multiple choice question. - *answers * DNA
If a strain of type R Streptococcus pneumoniae is injected into a mouse, you would expect
______. - *answers * The mouse to live
Griffith's work was performed at a time when the transforming substance was ______. -
*answers * not known
Which of the following types of Streptococcus pneumoniae bacteria did Griffith inject into
mice?
pigmented
live
smooth
rough
heat killed - *answers * live
smooth
rough
heat killed
Injection of which of the following in Griffith's experiments would cause the death of mice?
,UIUC MCB 150 - Unit 4: Genetics
Live smooth bacteria + live rough bacteria
Live smooth bacteria
Live rough bacteria
Dead smooth bacteria + dead rough bacteria
Dead smooth bacteria + live rough bacteria - *answers * Live smooth bacteria + live rough
bacteria
Live smooth bacteria
Dead smooth bacteria + live rough bacteria
Griffith's experiments demonstrated the ______ principle. - *answers * Transformation
Griffith's experiments demonstrated that the formation of the ______ to produce smooth (S)
bacteria is governed by genetic material. - *answers * capsule
What are the names of the nucleic acids found in cells? - *answers * DNA, RNA
Match the criteria for genetic material with the relevant aspects of Griffith's work.
Information -->
Replication -->
Variation -->
, UIUC MCB 150 - Unit 4: Genetics
Transmission --> - *answers * Information --> The transformed cells pick up material from dead
cells.
Replication --> The substance that produces the capsule can be copied.
Variation --> Choice, Bacteria have the ability to produce a capsule or not.
Bacteria have the ability to produce a capsule or not.
Transmission --> The transforming principle is passed via binary fission.
DNA and RNA are acidic molecules, which means they release ________ ions in solution and
have a net _________ charge at neutral pH - *answers * hydrogen, negative
DNA is a macromolecule composed of monomers called ________ - *answers * nucleotides
Which structural features of DNA, which has the highest level of complexity? - *answers *
genome
The experiments carried out by Griffith were important because they showed ______. -
*answers * that the genetic material could be passed from one cell to another
The nucleotides of a single DNA or RNA strand are linked by ______. - *answers * covalent
bonds
The interaction of two strands of DNA via hydrogen bonds results in a structure called the
______. - *answers * double helix
Nucleic acids are named as such because they ______. - *answers * release H+ in solutions