BIOC0001

BIOC0001 - INTRODUCTION TO CELL BIOLOGY EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED How many new cells do humans make everyday? 300 billion new cells What is a prosthetic group? - non-peptide (protein) group that binds covalently or non-covalently - can be metals or organic - act to support structure of the protein - can also act as an electron carrier Give 2 examples of compounds containing a porphyrin ring Haem, chlorophyll Name all parts of a eukaryotic cell [16] ...

BIOC0001 - NUCLEOTIDES AND NUCLEIC ACIDS EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE what is the initial packaging structure of DNA in eukaryotic cells? initial packaging structure of DNA is the DNA double helix wrapped around histone proteins to form nucleosomes what is the purpose of DNA packaging? DNA packaging helps DNA fit within the small size of a cell, aids in gene expression by regulating access to DNA, and provides security to minimise the likeliho...

BIOC0001 - PROTEIN EXPRESSION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE what are the components of prokaryotic and eukaryotic ribosomes? prokaryotic ribosomes consist of a small 30S subunit and a large 50S subunit, while eukaryotic ribosomes consist of a small 40S subunit and a large 60S subunit what is the function of the 5S ribosomal RNA piece? the 5S rRNA piece helps stabilise the ribosome's structure and facilitates the proper assembly of ribosomal un...

BIOC0001 - DNA TRANSCRIPTION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE describe the mechanism of RNA replication RNA replication occurs in viruses and involves the synthesis of RNA using an RNA template strand, a process carried out by RNA-dependent RNA polymerases explain the structure of promoters in prokaryotic gene organisation in prokaryotes, the promoters are specific DNA sequences located near the start site of a gene. they serve as binding sites for ...

BIOC0001 - PRACTICAL A (MOLECULAR BIOLOGY) EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE What is supercoiling? What is its purpose? The twisting of a DS DNA helix around itself allowing it to be packaged efficiently into a cell. Why might two sections of DNA which are the same length travel at different rates during gel electrophoresis? DNA can go from being supercoiled to relaxed during lab preparation. Supercoiled DNA is more compact and travels further. ...

WEEK10 BIOC0001 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Substrate-level phosphorylation The enzyme-catalyzed formation of ATP by direct transfer of a phosphate group to ADP oxidative phosphorylation Converting reduced coenzymes to oxidised form to generate ATP from ADP 4 Sources of reduced coenzymes fatty acid oxidation amino acid oxidation citric acid cycle glycolysis Shuttles enzymes which can transfer characteristic of an coenzyme across cell mem...

BIOC0001 - PRACTICAL B (TRANSAMINATION) EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Do animals store excess amino acids? No. What happens to excess amino acids? They undergo deamination. Describe the general deamination process. The amine group is removed and converted to ammonia with the remainder of the amino acid, mostly carbon and hydrogen, being used in other metabolic reactions. The ammonia is excreted in the urine as urea. What is the function of ...

WEEK4 BIOC0001 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED main components of protein Nitrogen, oxygen, carbon, sulfur basic components of amino acid alpha carbon attached to carboxyl group, hydrogen and amine group primary structure sequence of amino acids secondary structure protein folding due to hydrogen bonds along backbone tertiary structure 3d structure of chain determined by interactions with r group quaternary structure when multiple polypeptides come toget...

WEEK 7 BIOC0001 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Enzymes substances which catalyses chemical reactions in living organisms How enzymes stabilise transition state Interactions with functional groups and substrates to generate an alternative low energy reaction pathway Coenzymes protein which enzyme needs to function Cofactor substance which enzyme needs to function; Can be organic or metal ion co-substrates Coenzyme which is transiently bound ...

BIOC0001 MEGA SET EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE Polymer a molecular structure formed by a large number of similar units (monomers) Polymerisation chemical process of linking two or more monomers Monomers of DNA? C A T G Monomers of RNA? C A U G What components make up a nucleotide? -Pentose sugar -Cyclic nitrogenous base -Phosphate groups What are the pyrimidines? single ringed structures-C, T, U What are the purines? doubles ringed s...