Biology Lab Final Exam
What is the ratio of C, H, and O in carbohydrates?
1:2:1
In lab, you will test the effects of the following on the rate of diffusion.. (answers are concentration, molecular weight, and all are accurate).
All of these choices are accurate
Stat: T-test uses
Bar graph
This variable provides the measurements that will address the answer you seek. It goes on the y-axis and is usually a response to other variables or manipulators.
Dependent variable
Which project will you use for your scientific poster?
Either cellular respiration photosynthesis (your choice)
Anabolic reactions breakdown food to obtain energy.
False
This variable is manipulated by you in the experiment. It goes on the x-axis.
Independent variable
What does PCR stand for?
Polymerase Chain Reaction
Foods with high GI's are especially detrimental to diabetics.
True
In lab 8 you can choose between measuring the effect of which two variables on the rate of photosynthesis?
Type of light and color of light
What type of comparison does Naomi Oreskes make to the scientific review process?
a car
What type of macromolecule is not regulated well by diabetics?
a carbohydrate
Where do you submit your diabetes report draft on BB?
in a new thread on the discussion board
An experiment is reliable if...
similar results can be found if repeated.
How many steps are there in the typical peer review process?
5
How do you detect the presence of starch?
Iodine
90-95% of diabetics have type 2 diabetics.
True
What is the first step of PCR?
denaturation
DNA polymerase are...
enzymes that synthesize growing DNA
Which of the following is NOT a requirement of a quality research proposal?
the research question must have a correct hypothesis.
What statistic will you use in the 7 and 8
unpaired t-test
How many hypothesis will you create in lab 1?
2
How many research proposals will you create in Lab 6?
2
What are the typical "acceptance rates" of high end journals?
6-8%
How long should your oral report summary last?
<3 minutes
We will use a search tool called a ________ to match our samples in a big DNA database called ________ which houses all known DNA sequences.
BLAST; genebank
You will detect the presence of mono- and some disaccharides using...
Benedicts solution
You will detect the presence of protein using...
Biuret solution
A complete list of the products of cellular respiration.
CO2, H2O, and energy
Match the organism or organelle to the correct process. There may be more than one right answer.
Chloroplasts: Light reactions of photosynthesis. Crayfish: Cellular respiration.
We are attempting to get the DNA sequence of our gene of interest (Gol) which is __________.
Cytochrome b
Your final project for Unit 2 will be created on a poster board.
False
A complete list of reactants in cellular respiration.
Glucose and oxygen
_________ is the tendency to resist change in order to maintain a stable, relatively constant internal environment.
Homeostasis
Which of the following is NOT a variable in the diabetics data set?
Icidence rate of diabetics in each state and results of the 2016 election by state.
Match the descriptive clue with the correct process.
Ion channels; facilitated diffusion. Carrier proteins; facilitated diffusion. Passive; facilitated diffusion. Protein pumps; active transport. Moves solute from area of low solute concentration to area of high concentration; active transport. Required ATP; active transport.
Which of the following is true about our positive control for DNA analysis?
It is a known DNA sample with target DNA, impala DNA; it tests the success and validity of our protocol; if it is incorrectly identified all of our results are invalid and we would need to start all over again with fresh extractions; it should always show up as expected in your gel (at the right length).
Which of the following is true about our negative control for the DNA analysis?
It tests for any contamination that may have occurred; it is a known sample with NO DNA, distilled water; if it is shown to be cow or impala we would need to start over again with fresh extractions.
Stat: Correlation uses
Scatterplot
To get the code from our DNA samples, they are placed into a __________ which can detect the order of nucleotide bases in our sample.
Sequencer
A concentration gradient with lower concentrations of glucose outside the cell than inside the cell, is referred to as hypoglycemia.
True
What type of gel will we/would we have created in lab?
agarose
what type of gel will we create in lab?
agarose
What is the second step of PCR?
annealing
A quality hypothesis must...
be objective, measurable, testable, and include a prediction and potential rationale.
You can study the rate of cellular respiration by measuring
both the products and the reactants
Glucose and galactose are types of...
carbohydrates
A metabolic process by which cells secure energy from various compounds is...
cellular respiration
Which process is the most efficient?
cellular respiration
Catabolic reactions synthesize large molecules from smaller ones.
false
Which of the following is NOT contained in a gel solution?
gel buffer
In lab 7 you can choose between measuring the effect of which two variables on the respiration rate of crayfish?
glucose concentration or temperature
In lab, you will first create a ________, then a _________.
group contract; research proposal.
Diffusion is the net movement of solute molecules from an area of:
high concentration to an area of low concentration.
Which condition may result in frequent urination and extreme thirst?
hyperglycemia
What is the first and foremost characteristic critiques must judge when reviewing a paper?
importance and interest to other researchers in the field
Type 2 diabeties...
is preventable through healthy lifestyle choices. The body cannot properly use insulin.
When interior and exterior solute concentrations are equal, the condition is said to be...
isotonic
Which of the following statements is FALSE regarding the scientific method?
it is a linear process with a known outcome.
An experiment is valid if...
it measures what it is designed to measure
Which of the following research projects are ALWAYS peer-reviewed?
journal articles
A pathway used by animal cells in oxygen deficient conditions is...
lactate fermentation
Standard sized DNA fragments used for comparison in gels are called
ladders
Standard sized DNA fragments used for comparison in gels are called...
ladders
What charge does DNA have
negative
What type of charge does DNA have?
negative
________ occurs in response to imbalances in solute concentration on either side of the plasma membrane. Water moves from an area of low solute concentration to an area of high solute concentration. It is passive (no energy required).
osmosis
What is the PH indicator we use in this experiment? (Lab 7)
phenolphthalein
To which electrode will DNA migrate in gel electrophoresis?
positive
Most often, researchers will use the poster format as a way to...
put their preliminary research together and test the waters of scientific critique.
Who actually does the "peer-review"?
several other scientists who work in the same field
Gel electrophoresis separates DNA fragments by what?
size
gel electrophoresis separates DNA fragments by what?
size
What is our titrant in this experiment?
sulfuric acid