Bis 2a midterm 2 Study guides, Class notes & Summaries

On early Earth, the first things that looked like they might be classified as living organisms used iron sulfur clusters as catalysts. If these "naked" iron sulfur clusters can catalyze reactions, why do our cells instead use proteins carrying iron sulfur clusters as catalysts? a. To decrease substrate specificity b. To increase substrate specificity c. To prevent spontaneous oxidation of the iron in the cluster d. a and c e. b and c - ️️e. b and c Two tabby (striped) cats are bred...

1. A couple who are both carriers for the gene for cystic fibrosis have two children who have cystic fibrosis. What is the probability that their next child will have cystic fibrosis? (Assume parents are heterozygous) a) 0% b) 25% c) 50% d) 75% e) 100% - ️️b) 25% 2. In crossing a homozygous recessive with a heterozygote, what is the chance of getting an offspring with the homozygote recessive phenotype? a) 0% b) 25% c) 50% d) 75% e) 100% - ️️c) 50% 3. In snapdragons,...

What are proteins made of? - ️️Proteins are made up of amino acids linked together by peptide bonds, as well as the R groups attached to the amino acids (which make them unique and give certain characteristics) Proteins are formed through the process of condensation, when the carboxylic group and the amine group of the amino acids bind together to produce water, forming a peptide bond. How the various levels of organization (primary, secondary...) affect the structure and activity of a...

What does a protein do to be able to react with other molecules? - ️️produced as a linear stretch but folded up to be able to react What are catalysts made of? - ️️proteins plus other small molecules Why does life use a catalyst for every reaction? - ️️A. make it go faster B. emphasize the rare useful reactions and avoid toxic alternatives C. to optimize rates for current conditions D. to allow species to compete with other species by employing a specialized lifestyle Wha...

BIS 2A MIDTERM 2 2023/2024 On early Earth, the first things that looked like they might be classified as living organisms used iron sulfur clusters as catalysts. If these "naked" iron sulfur clusters can catalyze reactions, why do our cells instead use proteins carrying iron sulfur clusters as catalysts? a. To decrease substrate specificity b. To increase substrate specificity c. To prevent spontaneous oxidation of the iron in the cluster d. a and c e. b and c - CORRECT ANSWER-e. ...

Britt Bis 2A Midterm 2 study guide DUE 9 OCTOBER 2023 1. A protein's tertiary structure is stabilized by... a. Hydrophobic R groups b. Ionic bonds c. Phosphodiester bonds d. Hydrogen bonds e. a, b, and d -CORRECT ANSWER- e. a, b, and d In animals, if the fuel consumed exceeds energy expended, fats are synthesized from carbohydrates in order to store the excess energy. Acetyl-coA Carboxylase catalyzes the first dedicated step in fatty acid synthesis. This enzyme responds to a larg...

Amino acids in a protein chain are attached by bonds called ____________. - ️️Peptide Bond Where do peptide bonds form? - ️️Between the carboxyl group of one amino acid and the amino group of another amino acid. What changes when a protein denatures? - ️️Three dimensional structure The peptide bond that forms between two amino acids is an example of a - ️️Covalent Bond Which cell makes up the bulk of the cell membrane? - ️️phospholipids Which lipid provides a w...

What is the difference between channel proteins and carrier proteins? - ️️While they are both transport proteins active in facilitated diffusion, channel proteins are always open and work faster than carriers. While carrier proteins bind to a substance and change shape for that substance to pass through. What is Tonicity? - ️️The ability of an extra cellular solution to change in volume by affecting osmosis. What is osmoregulation? - ️️Mechanism of controlling the affects of os...

BIS 2A Midterm 1 Britt Which of the following statements best describes covalent bonds? - CORRECT ANSWER-the sharing of an electron pair between atoms; relatively strong bond Which of the carbon atoms is most oxidized? - CORRECT ANSWER-CO2 How can living things grow and display increasing levels of order, reorganizing random molecules into complex organized molecules? - CORRECT ANSWER-living things capture the energy from their environment, like nearby exergonic reactions, and use tha...

BIS 2A lecture notes fall quarter. This document covers materials included in midterm 2.