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MOLECULAR BIOLOGY WORKBOOK
$ 10,99Book Summary
The Molecular Biology Workbook is a comprehensive practical guide designed for third-year undergraduate students majoring in microbiology (Semester 5). The book aims to support and reinforce the understanding of core molecular biology concepts by systematically linking concise course reminders with a wide range of applied exercises and fully explained solutions.
The workbook covers the fundamental topics of molecular biology, beginning with DNA, including its structure, physicochemical properties, replication mechanisms, mutagenesis, and DNA repair processes. It then addresses RNA, its structure, types, and functions, as well as transcription mechanisms in both prokaryotic and eukaryotic cells. The book further explores protein biosynthesis, the genetic code, and translation, before concluding with gene expression regulation, particularly in prokaryotes.
Featuring more than 100 carefully designed exercises, supported by clear diagrams, tables, and step-by-step solutions, this workbook facilitates active learning, self-assessment, and exam preparation. It serves as an effective pedagogical tool that combines scientific rigor with educational clarity, making it a valuable reference for students in biological sciences and an introductory resource for early-stage researchers in molecular biology.
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The Gut-Brain Axis: Gut Microbiota and Emotional Regulation
$ 10,99The Gut–Brain Axis: Gut Microbiota and Emotional Regulation, by Dr. Mounira Ariech, explores the complex relationship between the digestive system, nutrition, brain function, and emotional well-being. It presents the gut microbiota as an active biological system that communicates continuously with the brain and contributes to the regulation of stress, anxiety, mood, and behavior.
The book begins by explaining the physiological and psychological foundations of stress and anxiety and examining how diet affects neurotransmitter production, inflammation, the immune system, and the hypothalamic–pituitary–adrenal axis. It then analyzes the microbiota–gut–brain axis as a bidirectional communication network involving neural, endocrine, immunological, and metabolic pathways. Particular attention is given to the vagus nerve, serotonin, GABA, short-chain fatty acids, the kynurenine pathway, and neurotrophic factors involved in emotional regulation.
The book also discusses how omega-3 fatty acids, magnesium, B vitamins, vitamin D, antioxidants, fiber, fermented foods, and other beneficial nutrients may support microbial diversity and psychological resilience. In contrast, diets rich in refined sugars, trans fats, excess sodium, chemical additives, and ultra-processed foods may contribute to intestinal dysbiosis, inflammation, anxiety, and emotional instability.
Ultimately, the book advocates an integrated approach combining nutritional care with psychological support. It presents targeted dietary strategies and microbiome-focused interventions as accessible complementary tools for managing anxiety, reducing the effects of chronic stress, and promoting long-term emotional stability.