Bio 1201 - Study guides, Class notes & Summaries

bio 1201 gregg exam 3 Questions With 100% Correct Answers.

LSU Bio 1201 Final Exam Pomarico Questions and Answers

transport proteins - are responsible for controlling passage across the membrane fluid mosaic model - The membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids fatty acid tails - nonpolar, hydrophobic fatty acid heads - hydrophilic, polar periphial proteins - bound to the surface of the membrane integral proteins - penetrate the hydrophobic core (ones that span the membrane are transmembrane protiens How do cells recognize each other? - by binding to molec...

BIO 1201 Unit 1 Sammons LSUA Exam Questions and Answers 100% Pass Non Polar - electonegativity sum of two elements is more than 0.5 Polar - electronegativity sum of two elements is less than 0.5 4C (39F) - Water is most dense Valence Shell - outermost electron shell element - A substance that cannot be broken down into simpler substances compound - A substance made up of atoms of two or more different elements joined by chemical bonds atom - smallest unit of matter ion - different numb...

the units of heredity and are made up of segments of DNA - Answer-genes how many chromosomes do humans have in the nucleus of their somatic cells? - Answer-46 chromosomes (23 pairs) the two chromosomes in each pair are called... - Answer-homologous chromosomes/homologs each pair of homologous chromosomes includes... - Answer-one chromosome from each parent what does meiosis result in - Answer-4 haploid daughter cells what does meiosis 1 do - Answer-separates homologous chromosomes when do...

LSU Bio 1201 Exam 4 Licata course requirement solution

why are membranes called phospholipid bilayers? - Answer-phospholipids have hydrophilic head and hydrophobic tail, hydrophobic face inside of cell making 2 layers what is meant by fluid mosaic? - Answer-Mosaic of proteins drifting laterally in fluid bilayer of phospholipids how are membranes adjusted for different temperatures? - Answer-membrane fluidity adjusted by changing the ratio of unsaturated to saturated fatty acids how do the relative amounts of saturated and unsaturated fats chan...

Which four elements make up 90% of life? - C, H, N, O Does DNA have uracil or thymine? - Thymine What is a macromolecule? - Molecule made up of polymers What are the complementary base pairs in DNA - A-T, G-C Which of the following are not pyrimidines? T, C, U, A, G - A, G What causes an element to become an isotope? - Change in # of neutrons What is an enantiomer? - Two molecules that are mirror images of each other What characteristic is specific of tertiary structure? - Interactions w...

Bio 1201 Exam 3 UPDATED Questions and CORRECT Answers Enzyme complexes that break down protein are called _____. lipases ubiquitins amylase proteasomes nucleases - CORRECT ANSWER - proteasomes (Proteasomes are enzyme complexes that break down proteins.