What does trna do - Study guides, Class notes & Summaries

Lesch-Nyhan Syndrome: what causes it and what are manifestations? - ***HGPRT deficiency in purine salvage pathway (this enzyme normally converts hypoxanthine to IMP and guanine to GMP). This deficiency leads to excessive Uric acid production and de novo purine synthesis. It is X linked recessive. Symptoms: hyperuricemia, gout, aggression / self mutilation, mental retardation, dystonia. 2. Treatment for Lesch-Nyhan? - ***Allopurinol / febuxostat second line. Both of these drugs inhibit...

Test Bank Porth Pathophysiology Concepts of Altered Health States 2nd Canadian EditionTable of Contents Chapter 01: Concepts of Health and Disease .......................................................................................................... 2 Chapter 02: Concepts of Altered Health in Children ............................................................................................. 13 Chapter 03: Concepts of Altered Health in Older Adults ............................................

Module 2 Exam Practice 113 Questions with Verified Answers What does RNA Pol I transcribe? - CORRECT ANSWER rRNA What does RNA Pol II transcribe? - CORRECT ANSWER mRNA snRNA What does RNA Pol III transcribe? - CORRECT ANSWER tRNA rRNA snRNA What is wrong with this definition of a gene? "A gene consists of DNA sequences that encode a single polypeptide" - CORRECT ANSWER 1. Not all genes are DNA sequences (RNA viruses) 2. Not all RNA molecules encode for a single polypeptide L...

Genetics Exam 2 practice exam 107 Questions with Verified Answers In five Hfr strains, each of which was used to build a time-of-entry map, the genes entered the recipient cells as follows: Strain 1: S L A C T F Strain 2: N P F T C A Strain 3: T F P N U Y Strain 4: S H Y U N P Strain 5: U N P F T C Which of the following represents a correct compilation of these results? A) S L A C T F P N H C U B) N P F T S L A C H U T C) T C A L S P N U Y H D) U N P F T C A L S T F E) S L A C T F...

BIOL200 SimUText questions with Complete Solutions what is the function of a gene? to contain information for building specific cellular products what proteins are encoded by genes? proteins that maintain cell membranes proteins that help convert sugar to energy protein channels that allow molecules in and out of cells When cells make proteins, is the gene in the DNA destroyed or used up in the process? No, the information in DNA is copied into a molecule of RNA How are DNA, RNA and polypepti...

MICROBIOLOGY-EXAM 1 WITH COMPLETE SOLUTIONS 100% What is microbiology? What does it examine? How many pounds do they make up in gut? what's the difference between microorganisms and microbes? - correct answer study of microbes: microorganisms and viruses (which are not alive) examines how microbes interact with humans, food, and how they can be used BY humans 3 lbs microorganisms: bacteria, archea, fungi, protozoa, and algae microbes: include everything AND viruses How ar...

AQA A-level Biology - Topic 4 questions answers 100% guaranteed success. Define variation - correct answer. Differences that exist between individuals In what ways can variation be caused? - correct answer. It can be caused by genetic factors, such as alleles from mutations. It can also be caused by the environment, such as climate. Most variation is caused by a combination of genetic factors and environmental factors Why is it impossible to study a whole population? - correct a...

What is homeostasis? The maintenance of a constant internal environment. What is a stimulus? A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? Detect the stimulus or change in environment. What happens after the receptors? Receptors send messages to the CNS via the sensory neurone. What makes up the central nervous system? The brain or spinal cord What is an effector? Muscles or glands tha...

Pyrimidine - correct answer One carbon ring Cytosine, Thymine, Uracil Purine - correct answer Two carbon rings Adenine, Guanine How are nucleotides joined together? - correct answer Condensation to form phosphodiester bond What is the function of mRNA? - correct answer Carries genetic info out of nuc...

Biochemistry WGU C785 FINAL EXAM Questions With Correct Answers Latest 2024 GRADED (Biochemistry Units 2-7) What is the basic structure of an amino acid? What do they look like? - Answer amino group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable group How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, and charged? - Answer Non-polar/hydrophobic - end with CH or "can't have" water. Polar - end with OH, SH, or NH. Charged - e...