MALDI-mass spectrometry was used to identify a protein from preserved T. rex samples. Briefly describe how this was done

What will be an ideal response?


The T. rex sample was believed to be collagen. A synthetic collagen was made and examined using MALDI-mass spectrometry. This generated a "fingerprint" for collagen. The T. rex sample was then examined with MALDI-mass spectrometry. The "fingerprints" matched, confirming the T. rex sample was collagen.

Biology & Microbiology

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Food poisoning generally results from the ingestion of food containing microbial toxins

Indicate whether the statement is true or false.

Biology & Microbiology

Review the pedigree shown in Figure 17.7 and choose the most accurate statement about the inheritance of an X-linked recessive mutation

A. For rare X-linked traits, most of the affected individuals are males. B. Daughters of affected males are always affected. C. The offspring of an affected male are usually affected. D. The sons of the sisters of affected males will always be affected. E. The brothers of affected males are always affected.

Biology & Microbiology

The risk of ____________________, which occurs when the embryo begins to grow outside the uterus, increases with the use of IVF

Fill in the blank(s) with correct word

Biology & Microbiology

Suppose a microbiologist wanted to identify the microbe responsible for a specific metabolic activity. To simultaneously assess metabolic activity and phylogenetic identity, the best technique would be ________.

A. optical tweezers with microelectodes B. microautoradiography with fluorescent in situ hybridization (MAR-FISH) C. isotope fractionation D. metatranscriptomics

Biology & Microbiology