You have placed cultures in an anaerobe jar, activated the gas pack, and sealed the jar. Later in the day you check the jar and notice that the methylene blue strip is colorless. What does this indicate?
There is a leak in the seal and oxygen is entering the jar.
An anaerobic environment has been successfully established within the jar.
The chemical reactions in the GasPak have not worked properly and no CO2 has been produced within the jar.
The palladium catalyst must be reactivated.
An anaerobic environment has been successfully established
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A healthy, young couple are carriers of cystic fibrosis; the chance that each of their future children will inherit this serious illness is
A. 50%. B. 0%. C. 75%. D. 25%. E. 100%.
When a signaling molecule binds to a G protein linked receptor, the ligand-receptor complex associates with GDP
protein and causes GDP to be replaced by GTP. __________________ Indicate whether the statement is true or false.
When bacterial genes are transferred to another bacterium by a virus, it is called ________.
A. transfection B. conjugation C. transduction D. transformation
In the Linnaean classification system, each species is given a unique scientific name, such as Sequoia sempervirens. What is are the two parts called that make up this name?
a) genus and phylum b) class and kingdom c) order and family d) genus and specific epithet e) specific epithet and order