Glycocalyx - Study guides, Class notes & Summaries

BIO 202 Exam 1 Questions With Correct Answers Updated 2024/2025 Graded A+ | Verified Answers. What are the properties of life? - correct answer *Cells and organization *Energy use and metabolism *Environmental response *Regulation and homeostasis *Growth and development *Reproduction *Biological evolution When was earth formed? - correct answer 4.55 billion years ago When did life on earth first appear? - correct answer 3.5 billion years ago What are the evolutionary mechanisms? - corre...

Plasma membrane Ans: A selectively-permeable phospholipid bilayer forming the boundary of the cells cystoplasm Ans: cellular material between the plasma membrane and the nucleus consists of the cytosol and organelles nucleus Ans: Control center of the cell, houses DNA Endoplasmic Reticulum Ans: a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum) i...

MLT ASCP Practice (medical laboratory technicians) Questions With Complete Solution / Guide -Graded A What single feature of normal RBCs is most responsible for limiting their life span? a. Loss of mitochondria b. Increased flexibility of the cell membrane c. Reduction of hemoglobin iron d. Loss of the nucleus [Accurate Ans: - d. Loss of the nucleus Intravascular or fragmentation hemolysis is the result of trauma to RBCs in the circulation. True or false. [Accurate Ans: - True Ext...

Edward Jenner - Developed small pox immunization using cowpox agent Paul Ehrlich - sought a " magic bullet" to destroy pathogens Alexander Fleming - discovered penicillin Joseph Lister - Pioneered aseptic surgery John Snow - father of epidemiology (cholera in London) Ignaz Semmelweis - Pioneered asepsis by discovering that hand washing prevented streptococcal infections in obstetric patients Robert Koch - Pioneered the cultivation of bacteria on solid media Louis Pasteur -...

Prokaryote Characteristics - - No membrane surrounding their DNA; no nucleus - Lack organelles - internal membrane-bound structures - Small; ~1.0 μm in diameter (RBC ~10 μm) - Simple structure Prokaryote Types - Bacteria & Archaea Prokaryote External Structures (3) - Glycocalyces, Flagella and Fimbrae & Pilli Gycocalyx - "Sugar cage" - Polysaccharides - Capsule & Slime Layer Capsule - Hard glycocalyx with consistent structure around prokaryote Slime Layer - Inconsistent outsider lay...

true motility Correct Answer-directed motion of bacteria (energy expenditure by the cell) brownian movement Correct Answer-random back-and-forth jiggling motion due to collisions of water molecules with the cells (cells don't go anywhere)... results from kinetic energy of molecules around the cell flagella Correct Answer-long, whip-like structures that extend beyond the surface of the cell and glycocalyx and propel the cell through its environment. Composed of flagellin serovars Correc...

Two general approaches for studying cells and tissues? 1. Histological Approach (most frequent) 2.Direct Observation What does direct observation of cells and tissue entail? Cell and organ culture Transillumination of organs Radiation probes Vital and supravital staining Achondroplasia one form of dwarfism that affects bone growth wherein cartilage doesn't convert into a bone Achondroplasia is caused by? a mutation in fibroblast growth factor receptor 3 (FGFR3) gene Integral or transmembran...

_______ are the prominent macromolecules in cells - Proteins ________ _________ - compounds containing both carbon and hydrogen atoms - Organic chemicals __________ molecules (e.g. soap, _phospholipids_) have both hydrophobic and hydrophilic properties. - Amphipathic A ________ fatty acid forms a triglyceride whose straight chains pack together to form solid fats. - Saturated A compound microscope used the total magnification of the ______ lens and the _____ lens.w - Ocular, objective A...

Nucleic acids stain with ______ dyes which impart a ________ color. Therefore, nucleic acids are described as ______. A. Base-like; blue/purple; acidophilic B. Acid-like; red/pink/orange; basophilic C. Base-like; blue/purple; basophilic D. Acid-like; red/pink/orange; acidophilic - Answer-C. Base-like; blue/purple; basophilic Which molecules are lost from cells during the processing for H&E staining? a. Carbohydrates b. Proteins c. Lipids d. Nothing is lost - Answer-c. Lipids A slide-m...

Obligate halophiles - High osmotic pressure aka lots of salt like the great salt lake Facultative halophiles - Type that causes acne can be in salty also known as osmolaric but not nessesary Neutrophiles - Most bacteria Protozoa and pathogens like neutral ph rang 6.5-7.5 Acidophiles - Really acidic as low as 0 pH Alkalineophiles - Grow best in basic range up to 11.5 ex cholera Thermophiles - Higher temperatures above 45C ex hot springs Hyperthermophiles - Hottest 80C and above ...