An Analyst Runs an Alkane Standard on a GC-MS Prior

question 14

Multiple Choice

An analyst runs an alkane standard on a GC-MS prior to running a sample from a case. The following data is obtained:
Retention time of the compound in the sample: 7.21 minutes
Retention time of the C7 test alkane: 6.42 minutes
Retention time of the C8 test alkane: 7.58 minutes
Calculate the retention index of the compound in the sample

• A) 821
• B) 768
• C) 792
• D) 702
• E) none of the above

Appreciate the importance of biodiversity and species diversity measures, including the Shannon index, in assessing ecosystem health.

Examine human practices in agriculture and conservation that influence biodiversity and ecosystem stability.

Analyze the effect of external factors, including abiotic filters and disturbances, on community composition and succession.

Understand the concept and significance of keystone species, ecosystem engineers, and primary consumers in ecosystems.

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Definitions:

Troponin

A regulatory protein in the actin filaments of muscle fibers.

Actin

Actin is a globular protein that forms filaments, which are crucial for various cellular processes including muscle contraction and cell motility.

Rheumatoid Arthritis

A chronic inflammatory disorder affecting joints, including those in the hands and feet, characterized by joint pain, swelling, and stiffness.

Synovial Fluid

A viscous fluid found in the cavities of synovial joints, lubricating and nourishing the joint tissues.