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@io-med.com Oct 9, 2026, 7:21 PM

Today's MCAT question (Bio/Biochem). Answer and explanation tomorrow in the replies.

#MCAT #premed #biochemistry

During the initial stages of amino acid catabolism, the amino group is typically removed from most amino acids through a process known as transamination. This reaction involves the transfer of the amino group to an α-keto acid acceptor, most commonly α-ketoglutarate. What is the primary immediate outcome of transamination in amino acid catabolism?
A. The original amino acid is converted into its corresponding α-keto acid, and α-ketoglutarate becomes glutamate.
B. The amino group is directly released as free ammonia, which is then immediately excreted from the body.
C. ATP is directly generated from the cleavage of the amino group, providing immediate cellular energy for metabolism.
D. New peptide bonds are formed between amino acids, leading to the synthesis of larger protein structures.

@fds.wsocial.eu Oct 9, 2026, 7:00 PM

Invisible Ink Could Make #Tattoos Less Permanent
#Biochemistry #Science

@fds3rd.bsky.social Oct 9, 2026, 7:00 PM

Invisible Ink Could Make #Tattoos Less Permanent
#Biochemistry #Science

@fds.wsocial.eu Oct 9, 2026, 6:49 PM

An SPF Testing Scandal Sheds Light on Sunscreen and its Flawed Ratings
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@fds3rd.bsky.social Oct 9, 2026, 6:49 PM

An SPF Testing Scandal Sheds Light on Sunscreen and its Flawed Ratings
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@apcmicrobiomeirel.bsky.social Oct 9, 2026, 8:22 AM

Congratulations to APC PI Prof. Catherine Stanton, ranked #1 in Ireland in research.com's 2026 Best Female Scientists ranking!

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@4quazulu.bsky.social Oct 9, 2026, 8:09 AM

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@chemcenterbio.bsky.social Oct 8, 2026, 5:49 PM

STOP Buying 20% LESS POTENT Peptides From RESELLERS!

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Source: pmc.ncbi.nlm.nih.gov/articles/PMC...
Source: pubmed.ncbi.nlm.nih.gov/40635175/

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@uwbiochem.bsky.social Oct 8, 2026, 12:36 PM

Deadline Oct. 15: We are hiring for a professor at any level to join our creative and dynamic community. Candidates in all areas of #biochemistry will be considered, and we are particularly interested in candidates in systems and synthetic biology. jobs.wisc.edu/jobs/assista...

Poster for job ad. Read further details at jobs.wisc.edu. Job number JR10012489.

@fds3rd.bsky.social Oct 7, 2026, 6:39 PM

#Chemistry #NobelPrize for Asymmetric Organic Synthesis
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@fds.wsocial.eu Oct 7, 2026, 6:39 PM

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@mnemosy.bsky.social Oct 7, 2026, 9:27 AM

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@moleculemaker.bsky.social Oct 6, 2026, 7:49 PM

Discovery doesn't happen in silos, and that's why MATRIX-Uni helps students explore interdisciplinary #AIresearch.

#ILLINOIS transfer student Mariia Martova worked with #NSFMMLI researchers to apply her #computerscience skills to #biochemistry.

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@fds3rd.bsky.social Oct 6, 2026, 7:30 PM

Vipers’ Self-Defense Mechanism Could Spark a New Antivenom Strategy
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@fds.wsocial.eu Oct 6, 2026, 7:30 PM

Vipers’ Self-Defense Mechanism Could Spark a New Antivenom Strategy
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@ucllifesciences.bsky.social Oct 6, 2026, 2:29 PM

🧬 Thinking about studying Biochemistry? Join our UCL Biochemistry BSc & MSci Q&A sessions on 15 October and get your questions answered by staff and students.

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Book now: www.ucl.ac.uk/life-science...

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Graphic advertising UCL Biochemistry BSc and MSci Q&A sessions on 15 October 2026, featuring a scientific illustration of a cell membrane in shades of blue, turquoise and purple. UCL Faculty of Life Sciences branding appears in the bottom-right corner.

@chemcenterbio.bsky.social Oct 6, 2026, 12:50 PM

The 1000% BDNF Explosion That Rewires the Entire Brain: Is It Real?

Source: pubmed.ncbi.nlm.nih.gov/12893840/
Source: pubmed.ncbi.nlm.nih.gov/18611290/
Source: pubmed.ncbi.nlm.nih.gov/16635254/
Source: pubmed.ncbi.nlm.nih.gov/23673233/

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@bcmaterials.bsky.social Oct 6, 2026, 5:13 AM

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@io-med.com Oct 5, 2026, 9:25 PM

Today's MCAT question (Bio/Biochem). Answer and explanation tomorrow in the replies.

#MCAT #premed #biochemistry

In the *lac* operon, the presence of lactose in the bacterial environment leads to the expression of genes necessary for lactose metabolism. This regulation occurs through a specific molecular interaction. Which of the following best describes the direct effect of lactose on the *lac* operon?
A. Lactose binds to the repressor protein, inducing a conformational change that prevents its binding to the operator region.
B. Lactose directly binds to RNA polymerase, enhancing its affinity for the promoter sequence of the operon.
C. Lactose acts as a corepressor, binding to the repressor protein and increasing its affinity for the operator.
D. Lactose binds directly to the operator region of the operon, physically blocking the repressor's attachment.