Bio 1201 Study guides, Class notes & Summaries

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...

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...

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...

Exam 3: BIO1201/ BIO 1201 Review (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: how do different alleles occur Answer: through mutation Q: what 3 things contribute to genetic variation Answer: crossing over, independent assortment, random fertilization Q: when does independent assortment occur? Answer: metaphase I of meiosis Q: random fertilization Answer: any sperm can fertilize any egg Q: the ...

Exam 1: BIO1201/ BIO 1201 Study Guide (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: Nucleolus: nonmembranous structure involved in production of ribosomes; a nucleus has one or more nucleoli Q: Chromatin Answer: material consisting of DNA and proteins; visible in a dividing cell as individual condensed chromosomes Q: cell wall Answer: outer layer that maintains cell's shape and protects cell from mechanical damage; ma...

Final Exam: BIO1201/ BIO 1201 (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: Where does the most energy production occur in cellular respiration? Answer: Oxidative phosphorylation Q: What are the properties of a proton compared to neutrons and electrons? Answer: Heavy, positive Q: Which molecules can cross the membrane the easiest? Answer: Nonpolar, small Q: Which isomer has a carbon-carbon double bond? ...

Exam 1: BIO1201/ BIO 1201 (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: T/F: A compound has characteristics different from those of its elements Answer: True Q: An element's properties depend on the structure of its ______. Answer: Atom Q: An ____________ is the smallest unit of matter that still retains the properties of an element. Answer: Atom Q: Atoms can be broken down into smaller particles like ____...

Exam 4: BIO1201/ BIO 1201 (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: what makes a specific locus homozygous? Answer: if both homologous chromosomes carry the same allele at a given gene locus (also called true-breeding) Q: what makes a specific locus heterozygous? Answer: if 2 homologous chromosomes carry different alleles at a given gene locus (also called hybrid) Q: what is the punnett square method? Answer:...

Exam 2: BIO1201/ BIO 1201 Review (Latest 2024/ 2025 Update) | Questions and Verified Answers| 100% Correct| Grade A – LSU Q: what is active transport? Answer: work must me done; must use supplied energy; employs carrier molecule Q: for which transport processes are carrier molecules involved? Answer: facilitated diffusion and active transport Q: which transport processes require the input of additional energy? Answer: active transport Q: what is a semi...