Prelab quiz 2 Flashcards
Model organisms are species that are used to study certain aspects of biology. Which of the following is NOT a characteristic of a model organism?
has a well studied genome
Can be manipulated easily
has a small number of offspring
has short generation times
has a small number of offspring
A controlled experiment is one that ________.
is repeated many times to make sure the results are accurate
proceeds slowly so a scientist can make careful records
keeps all variables constant
tests experimental and control groups in parallel
tests experimental and control groups in parallel
How does catechol oxidase (the enzyme studied in this lab) prevent damaged fruit from rotting?
The product of the enzymatic reaction inhibits the growth of microorganisms
The product of the enzymatic reaction allows the growth of microorganisms
the substrate of the enzymatic reaction, catechol directly inhibits the growth of microorganisms
the substrate of the enzymatic reaction, benzoquinone, inhibits the growth of microorganisms
The product of the enzymatic reaction inhibits the growth of microorganisms
In the experiment where you are measuring the effect of temperature on enzymatic activity, the independent variable is
temperature
catechol oxidase
absorbance at 470 nm
pH
temperature
Which of the following instructions contribute to a productive experimental design?
alter only one condition between the control and the experimental condition
do not include a control, it is a waste of resources.
do not run the experiment more than once, the results might become confusing
include a small sample size
alter only one condition between the control and the experimental condition
Beta lactamase is a gene, which is incorrect for it?
It kills the cells by blocking the synthesis of bacterial cell wall
It is expressed in the pGlo plasmid
It is an antibiotic resistance gene
It encodes beta lactamase enzyme
It kills the cells by blocking the synthesis of bacterial cell wall
Which of the following is NOT required for a successful transformation
a promoter
a host
a vector
a selection method
a promoter
Modern biologists use a variety of techniques to study living organisms at all levels. What level of organization would describe an animal’s eye?
organ system
cell
organ
tissue
organ
What is competency for a cell?
The chemical process of switching the gene.
The insertion of a formed plasmid into the cell.
Change in the structure and permeability of the cell membrane.
Super coiled molecules formed in the plasmid of the cell.
Change in the structure and permeability of the cell membrane.
