You are given a sample of an unknown food. Describe how you would test it for the presence of lipids.
What will be an ideal response?
Obtain an extract of the food by blending or mashing it. Spot test the extract on uncoated paper as you did in lab, or conduct a Sudan IV test as described on pages 59 and 60 of the lab manual.
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The sudden increase in the occurrence of a disease above the expected level is called ________.
A. an endemic B. hyperendemic C. sporadic D. an epidemic
Knockout mice with no active copies of the Dvl-1 gene ____
a. were apparently abnormal physically b. displayed normal social behavior c. were not easily startled d. were apparently normal physically and but not socially e. were apparently normal physically, but displayed abnormal social behavior and were easily startled
What is represented by the part of the figure labeled as “B”?
a. normal tissue b. cancerous tissue c. adipose tissue d. lymph nodes e. red blood cells
What type of mutation leads to a frameshift in the reading of DNA?
A) All point mutations B) Insertions only C) Deletions only D) Both insertions and deletions