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WorksheetsPBS
Total questions: 15
Worksheet time: 15mins
Check all that apply: Which of the following physiological responses did we record in class for our own lie detector tests?
Skin Conductivity
Heart Rate
Respiration Rate
Blood Pressure
Which of the following steps is NOT included in the Experimental Design Process?
Make a Prediction
Communicate Findings
Conduct the Experiment
Research the Topic
What is the scientific term for a white blood cell?
Thrombocyte
Platelet
Erythrocyte
Leukocyte
Which of the following is a protein found in red blood cells that carries oxygen?
Uracil
Hemoglobin
Terraglobin
Cytosine
You complete blood type testing and there is no agglutination with either anti-A or anti-B antibodies. What type of blood is present?
Type A
Type B
Type AB
Type O
If a blood spatter diameter was about 16 mm, at what height would it have fallen from? (Use the best fit line to determine)
60 cm
80 cm
100 cm
120 cm
Four different bases make up DNA, and the sequence of these bases encodes the information that determines an organism’s traits. Select the option that correctly lists the four bases and describes how they pair to make the rungs of the DNA ladder.
The four bases are uracil (U), arginine (A), cyclosine (C) and guarine (G). U pairs with A and C pairs with G.
The four bases are adenine (A), guanine (G), cytosine (C) and thymine (T). A pairs with T and C pairs with G.
The four bases are alanine (A), gorine (G), cyclosine (C) and thyidine (T). A pairs with T and C pairs with G.
Which of the following are proteins found in chromosomes that assist in the wrapping & condensing of DNA molecules?
Nucleotides
Histones
Hemoglobin
Organelles
______________________ is the lab process that allows DNA analysts to separate and compare DNA samples for forensic purposes.
Gel Electrophoresis
Confirmatory Testing
Kastle-Meyer Test
Polygraph Test
A student performed a gel electrophoresis experiment. The results are represented in the diagram
below. Compared to the fragments at the top of the gel, the fragments at the lower end are
larger, and move slower
larger, and move faster
smaller, and move faster
smaller, and move slower
PBS is commonly used in laboratories for which of the following purposes?
A) As a nutrient medium for bacterial growth
B) As a buffer solution for maintaining pH
C) As a staining agent for microscopy
D) As a solvent for organic reactions
What does PBS stand for in a scientific context?
A) Phosphate Buffered Saline
B) Potassium Bromide Solution
C) Polyethylene Butylene Sulfate
D) Protein Binding Substance
Which of the following is a key component of PBS?
A) Sodium chloride
B) Glucose
C) Ethanol
D) Acetic acid
In cell culture, why is PBS often used to wash cells?
A) It provides nutrients to the cells
B) It helps in detaching cells from the culture dish
C) It removes excess serum and dead cells
D) It stains the cells for better visibility
How does PBS help in maintaining the physiological pH of a solution?
A) By acting as an acid
B) By acting as a base
C) By acting as a buffer
D) By acting as a catalyst
