1. Spring Semester 2012-13
University of Puerto Rico - Cayey
RISE Program
Instructions for Laboratory Writing Assignments
1. For each assignment you should write a summary paragraph of 8-10 sentences and a range
from 160 -170 words.
2. A template for each assignment is attached. Once you complete the template email it to Dr. Elena
Gonzalez; she will grade it using the rubric below and return it to you. Within the next two days, you will
email it to me with the corrections incorporated. In your summary include a reference to each one of the
criteria in the rubric below.
3. Email subject should include: Your register number; first name; Assignment # and hand-in date.
Example: 6. Alejandra Assignment 3 May 3
Rubric for Assessing Laboratory Summaries
Name Monica Rivera Torres Points
Date 30 Points Total
Assignment Number Assignment 3
A. PURPOSE OF THE LAB
TECHNIQUE
1 2 3 4 5
Refers to purpose and objectives
of the lab techniques
B. BIOLOGICAL COMPETENCE
Demonstrates knowledge of
laboratory procedures
Reports findings adequately
C. ENGLISH COMPETENCE
Uses correct grammar, syntax,
spelling, and punctuation
Demonstrates clarity and
coherence
D. CRITICAL THINKING
In concluding identifies
applications and or implications of
the study

2. University of Puerto Rico - Cayey
RISE Program
Template for Laboratory Summaries of Assignment 3 Biol. 4997-Biomedical Techniques
Due date May 3, 2013
Reg.# 12 Name Monica Rivera Date:
Summary 7. Phages & Proteomics February 8 & April 12
Dr. Rubin worked with the students in the research project: Isolate a novel Phage from the
environment. Each student had brought a soil sample to the lab, previous to this workshop, to see if
they could find phages in it. They followed the protocol for the enrichment and purification.
Unfortunately, not everyone found phages even after several tries. Then those who did find phages
continued the process of purification in order to make a high titter assay. During Dr. Rubin’s
workshop, students got to run a gel with one of the student’s phages. We went through the process of
loading the gel, staining and distaining. The purpose of the gel was to be able to identify the phage. We
found two phages were the same type since the bands in the gel were exactly the same pattern.
Word Count__140__
Summary 8. Water sampling, testing, and statistical application March 8 & April 26, 2013
Dr. Arce gave a workshop on water quality. He explained what variables affect the quality of the
water. Examples of this are temperature, ph, sedimentation, turbidity, bacteria or fecal coliform. Then
he introduced us to the research project with the purpose of identifying whether or not a water
sample contains Escherichia coli. After taking a water sample from a river, pond, or sink, this water has
to be conserved in 4ºF in order to keep any bacteria alive. The water has to be tested within 8 hours of
taking the sample. Then the water is poured into a Quantytray which is later sealed and incubated for
24 hours. If after the 24 hours some of the wells are found yellow or florescent this means the water
was contaminated. In my case, 49/49 wells were all clear from Escherichia coli.. Water testing is
important to ensure the quality of water we are in contact with in a daily basis. Also this kind of
research is done in different sites across the island.
Word Count:_171__