Biol220 Study guides, Class notes & Summaries

BIOL2200 MID SEMESTER PRACTICE EXAM 2024 WITH 100% CORRECT ANSWERS Phospholipid bilayers are NOT stabilised by: a. van der Walls forces b. covalent bonds c. hydrogen bonds d. ionic bonds e. hydrophobic interactions - correct answer b. covalent bonds A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute B. The protein can undergo a conformational change to switch between two states: either both binding sites are ex...

Phospholipid bilayers are NOT stabilised by: a. van der Walls forces b. covalent bonds c. hydrogen bonds d. ionic bonds e. hydrophobic interactions - b. covalent bonds A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute B. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane, or both are exposed exclusively on the ot...

What is the DNA -> RNA process? - RNA polymerase I creates a transcript. This is primary RNA with 5' cap and 3' with poly(a) site. Maturation of RNA includes cleaving at the poly(a) site and RNA splicing of introns to leave matureRNA. What is the mRNA to protein process? - Codons run through ribosome in 3 base pairs. A corresponding tRNA recognises 3 base pair and brings with it conjugate bases and an AA. This adds the relevant AA for every 3 base pair, creating a polypeptide. What is...

DNA that encodes information for proteins is within the ________ - nucleus What makes up the transcription complex that transcribes DNA? - Polymerases and transcription factors Transcriptional complexes transcribe DNA into _______ - mRNA ________________ machinery reads mRNA after it has been shuttled into the cytoplasm - translational Where are ribosomes formed? - nucleus ______________ make up the translational machinery that reads mRNA - Ribosomes The amino acid chain that forms the p...

Question 1. What is modern cell biology? - An integrated discipline that includes cell culture, microscopy, molecular biology, genetics, and biochemistry. Question 2. What is gene ontology? - A major bioinformatics initiative to unify the representation of gene and gene product (i.e. proteins and RNA) attributes. The project includes development of a controlled vocabulary of a protein's attributes. Question 3. What are the three domains of gene ontology? Briefly describe them. - Cellular ...

Phospholipid bilayers are NOT stabilised by: a. van der Walls forces b. covalent bonds c. hydrogen bonds d. ionic bonds e. hydrophobic interactions - b. covalent bonds A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute B. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane, or both are exposed exclusively on the ot...

A myocyte is a ___. (a) Nerve cell (b) Muscle cell (c) Stem cell (d) Epithelial cell (e) Storage cell - b) muscle cell What taxonomic classification level is the Eukaryota? (a) Domain (b) Phylum (c) Organ (d) Class (e) Sub-phylum (f) Sub-domain - a) domain Which term best describes the mode of obtaining nutrition in most animals? (a) Heterotroph (b) Homotroph (c) Phototroph (d) Autotroph (e) Chemotroph (f) Mixotroph - a) heterotrophWhile fish, cetaceans (marine mammals), and i...

A myocyte is a ___. (a) Nerve cell (b) Muscle cell (c) Stem cell (d) Epithelial cell (e) Storage cell - b) muscle cell What taxonomic classification level is the Eukaryota? (a) Domain (b) Phylum (c) Organ (d) Class (e) Sub-phylum (f) Sub-domain - a) domain Which term best describes the mode of obtaining nutrition in most animals? (a) Heterotroph (b) Homotroph (c) Phototroph (d) Autotroph (e) Chemotroph (f) Mixotroph - a) heterotrophWhile fish, cetaceans (marine mammals), and i...

What is the DNA -> RNA process? - RNA polymerase I creates a transcript. This is primary RNA with 5' cap and 3' with poly(a) site. Maturation of RNA includes cleaving at the poly(a) site and RNA splicing of introns to leave matureRNA. What is the mRNA to protein process? - Codons run through ribosome in 3 base pairs. A corresponding tRNA recognises 3 base pair and brings with it conjugate bases and an AA. This adds the relevant AA for every 3 base pair, creating a polypeptide. What is...