Bio 120 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...

BIO 171 Final Exam (GRADED A) Questions and Answers | Portage Learning Course BIO 171 Institution Portage Learning Final Exam Due No due date Points 120 Questions 30 Time Limit 90 Minutes Instructions The Final Exam is composed of questions based upon material presented in the entire course. It will asses s your level of mastery of the course content and goals. The format of the exam is similar to past module exams. You are about to begin a timed exam. Please make sure you are in a suitable...

Bio 120 Exam QUESTIONS WITH DETAILED VERIFIED ANSWERS | A+ GRADE ASSURED Synapomorphy A shared derived character or trait state that distinguishes a clade from the other organisms. Analagous Having characteristics that are similar because of convergent evolution, not homology. Homologous Similarity in characteristics resulting from a shared ancestry. Porifera Sponges No true tissues Mostly marine, aquatic Asymmetric 2 germ layers (endoderm and ectoderm) No coelom Sessile Sessile At...

Micro Bio 120 Final Exam 2024 QUESTIONS WITH DETAILED VERIFIED ANSWERS | A+ GRADE ASSURED True or False: The plasma membrane and most other membranes are composed of a lipid bi-layer in which integral proteins are buried. True True or False: Procaryotic cells are usually smaller than eucaryotic cells. True True or False: Most procaryotes have strong cell walls that give them shape. True The significance of the plasma membrane is that: A) It selectively allows some molecules to pass int...

BIO 120 Module 1 2024 QUESTIONS WITH DETAILED VERIFIED ANSWERS | A+ GRADE ASSURED proteins Ribosomes are responsible for the synthesis of carboxyl Amino acids are acids because they always possess which functional group? sulfur-32 (atomic number Q: Phosphorus-32, a radioactive isotope of phosphorus-31 (atomic number Q:, undergoes a form of radioactive decay whereby a neutron turns into a proton and emits radiation in the form of an electron. What is the product of such radioactive decay o...

BIO 120 Exam Study QUESTIONS WITH DETAILED VERIFIED ANSWERS | A+ GRADE ASSURED Pasteur's experiment provided conclusive evidence to reject the spontaneous generation hypothesis, which states that cells arise from nonliving material. As a consequence, his results supported the all-cells-from-cells hypothesis. Which element of Pasteur's experimental design was most important and why? His two treatments differed only in the shape of the flask, resulting in exposure of only one of the treatm...

BIO 120 Exam Study Guide 2024 QUESTIONS WITH DETAILED VERIFIED ANSWERS | A+ GRADE ASSURED Biology the scientific study of life (Survey of the diversity of life on earth) Fundamental principle is evolution Some properties of life (only eden ever gives responses related to relationships) - Order -Energy processing -Evolutionary adaptation -Growth and development -Responses to the environment -Regulation - body temperature, blood flow -Reproduction Reductionism from complex system to sim...