No nuclear membrane Study guides, Class notes & Summaries

. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus should be observed. A single circular chromosome is characteristic of prokaryotic cells, which do not have histones. Free-floating nuclear material describes a prokaryotic cell, which would not h...

Test Bank for Porth's Essentials of Pathophysiology 5th Edition by Tommie L Norris Test Bank for Porth's Essentials of Pathophysiology 5th edition by Tommie L Norris 1. Chapter 1 Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by: A) Bound and transmembrane proteins B) Complex, long carbohydrate chains C) Surface antigens and hormone receptors D) A gating system of selective ion channels ...

Test Bank for Porth's Essentials of Pathophysiology 5th Edition by Tommie L Norris Test Bank for Porth's Essentials of Pathophysiology 5th edition by Tommie L Norris 1. Chapter 1 Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by: A) Bound and transmembrane proteins B) Complex, long carbohydrate chains C) Surface antigens and hormone receptors D) A gating system of selective ion channels Feedback: Th...

Large pressure gradient between left ventricle and aorta during systole - Answer- aortic stenosis (calcification) Hyperacute transplant rejection is what type of hypersensitivty rxn - Answer- type 2 - pre existant recipient antibodies react to donor antigen acute transplant rejection is what type of hypersensitivity rxn - Answer- type 4- T cell mediated OR humoral: similar to hyperacute except antibodies form after transplant which type of transplant rejection is both type 2 and type...

Made first microscope - correct answer -Von leeuwenhoek Washing hands to reduce puerperal fever - correct answer -Semmelweis Disproved spontaneous generation - correct answer -Pasteur Antiseptic surgery - correct answer -Lister Koch's postulates - correct answer -Organism must be observed in every case of dz Organism must be isolated and grown in pure culture Organism must cause the dz when injected into susceptible animal Organism must be recovered from experimental animal and i...

KSU Biology 198 Exam 3 Questions and Answers Already Graded A When viewing with a(n) ____ microscope, organisms can be alive or dead, you can see larger structures, and the color of the organisms. light When viewing with a(n) _________ microscope, organisms must be dead, but you can view very small things such as ribosomes and protein as well as the texture of organisms. electron The __________ states that all cells come from pre-exisisting cells, are the smallest unit of life, an...

mycology - ️️the study of fungi fungi characteritics - ️️-aerobic: NO fermentation -grow at 22-30 C (~ room temp) -grow at neutral pH -prefer humid conditions -eukaryotic cells -many are free living in the environment (saprobes) and do not cause disease eukaryotes - ️️fungal cells -cell wall of chitin -80 S ribosomes -membrane bound organelles -ergoserol cellular membranes -contains nucleus (often multinucleate) and nuclear membrane -contains DNA organized into chromosom...

cell - correct answer basic structural and functional unit of living organisms most cells are composed of what elements? - correct answer N, O, C, H tissues - correct answer groups of cells similar in structure and function are all cells the same? - correct answer no 3 main regions of a cell - correct answer nucleus, cytoplasm, and plasma membrane nucleus - correct answer control center of the cell. contains DNA. 3 regions: nucleolus, chromatin, and nuclear envelope (membrane)...

Eukaryote characteristics (3) CORRECT ANSWER -nuclear membrane -gametes->zygotes -diploid=genetic exchange of crossing over Prokaryote characteristics (3) CORRECT ANSWER -no nuclear membrane -asexual -haploid (no meiosis or mitosis) Molecular clock CORRECT ANSWER -individual variation of macromolecular sequences -random occurrence of selectively neutral changes Why do we use SSRNA or 16rRNA for molecular clock ? CORRECT ANSWER -some regions evolve slowly enabling comparisons of...

Hierarchic Organizational system for nomenclature (Ans- Kingdom Phylum Class Order Family Genus Species (Least) "Keep Penguins Cool Or Find Good Shelter" Scientific Method (Ans- Observation Hypothesis Experiment Conclusion Water (Ans- All life, and therefore biology , occurs in water. Properties of Water (Ans- 2 Hydrogen bonds Covalently bonded to Oxygen. Hydrogen Bonding between molecules. - High specific heat - Large bodies or water stabilize climates - S...