NUSC 1165 Exam 3 2026/2027 | 40+ Questions & Answers | Protein, Amino Acids, Energy Balance, BMI & Vitamins | University of Connecticut

This NUSC 1165 Exam 3 2026/2027 study guide provides 40+ questions and verified answers across 6 pages, concentrating on three major areas of introductory nutrition: protein and amino-acid metabolism, Chapter 7 Energy Balance, and Chapter 8 Water-Soluble Vitamins. The material covers protein functions, essential and nonessential amino acids, protein digestion and absorption, protein synthesis, dietary patterns, energy balance, BMI and body composition, hunger regulation, bariatric surgery, vitamin bioavailability, and major B-vitamin functions and deficiencies. The question-and-answer format makes the document a concise resource for rapid Exam 3 preparation and concept review. The protein section explains the structural and metabolic functions of protein, including structural support, molecular transport, enzyme and hormone formation, fluid balance, and energy production when required. Students review amino-acid structure, essential versus nonessential amino acids, limiting amino acids, and complete proteins. The document identifies meat, poultry, fish, eggs, dairy products, legumes, nuts, soy, and other foods as important protein sources and explains that complete proteins contain all nine essential amino acids in adequate amounts. Protein metabolism receives additional attention through digestion, absorption, transamination, deamination, and protein synthesis. The guide traces protein digestion from mechanical processing through stomach hydrochloric acid and pepsin to pancreatic enzymes such as trypsin and chymotrypsin in the small intestine. Amino acids are then absorbed and transported toward the liver through portal circulation. Students also review transcription, in which DNA information is copied to mRNA, and translation, in which mRNA and tRNA participate in assembling amino acids into protein chains at the ribosome. The document states an adult protein requirement of 0.8 g/kg body weight and gives a higher 1.2–2.0 g/kg range for athletes. It also compares several dietary patterns: vegan, vegetarian, lacto-ovo vegetarian, pescatarian, and omnivorous diets. These topics make the protein section particularly relevant for questions involving dietary protein quality, amino-acid availability, metabolism, and differences between plant- and animal-based eating patterns. Chapter 7: Energy Balance covers the relationship between energy intake and energy expenditure, along with practical methods for evaluating body size and health risk. Students review the BMI formula—weight in kilograms divided by height in meters squared—BMI classifications, body-fat percentages, waist circumference, and apple versus pear body-fat distribution. The study material identifies abdominal or apple-shaped fat distribution as carrying greater heart-disease risk and gives waist-circumference cutoffs of greater than 40 inches for men and 35 inches for women. Energy metabolism is further examined through feasting and fasting states. The document explains storage of carbohydrate as glycogen and fat in adipose tissue during energy abundance, while fasting involves glycogen breakdown, fatty-acid and ketone use, and protein contribution to gluconeogenesis. Estimated Energy Requirement (EER) is presented as depending on age, sex, height, weight, and activity level. Appetite regulation includes leptin, ghrelin, and peptide YY, with leptin and peptide YY associated in the document with reduced hunger or appetite and ghrelin with increased hunger. The guide also reviews bariatric and weight-loss surgery, including gastric banding, gastric bypass, and gastric sleeve procedures. Benefits listed in the document include weight loss, improved health, greater self-esteem, and stamina, while potential complications include nutrient deficiencies, dumping syndrome, gallstones, hernias, and staple-line problems. This section connects energy balance with clinical approaches to weight management. Chapter 8: Water-Soluble Vitamins introduces vitamins as organic micronutrients involved in growth and metabolism and discusses vitamin deficiency, fortification, enrichment, and bioavailability. Factors affecting bioavailability include solubility, overall diet composition, dietary fat, age, health, and alcohol use. The document also contrasts water-soluble vitamin transport with fat-soluble vitamins, which are absorbed alongside dietary fat and transported in chylomicrons through the lymphatic system. High-yield vitamin content includes thiamin (B1), niacin (B3), folate (B9), and vitamin B6. The guide associates thiamin deficiency with beriberi and Wernicke-Korsakoff syndrome, niacin deficiency with pellagra and its “4 D’s,” and folate deficiency with neural-tube defects. Vitamin B6 is discussed in relation to amino-acid metabolism and homocysteine, while the final summary on page 6 consolidates the major vitamin functions and deficiency consequences for quick examination review. Relevant students: This document is particularly relevant to University of Connecticut NUSC 1165 students, undergraduate nutrition students, health science students, nursing and allied-health students taking introductory nutrition, and learners preparing for NUSC 1165 Exam 3. It is especially useful for students reviewing proteins and amino acids, protein requirements, protein synthesis, energy balance, BMI, body composition, appetite hormones, bariatric surgery, vitamin bioavailability, B vitamins, and vitamin-deficiency disorders. The uploaded file identifies the course as NUSC 1165; the institution name is not printed on these six pages, so the University of Connecticut association follows the NUSC 1165/UConn course context rather than being independently stated in this particular file. 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