Phospholipid bilayer Guides d'étude, Notes de cours & Résumés

PCOL355 Final Test Questions with Correct Answers Which of the following cells secrete anti-coronavirus antibodies? -Activated B cells -Antigen-presenting cells -T-helper cells -Cytotoxin T cells - Answer-Activated B cells PTX-loaded PEG-EB2 had a faster PTX release over Taxol. True/False - Answer-False Pfizer-BioNTech developed Comirnaty, and Moderna developed SPikevas, two widely used COVID-19 nanovaccines using micelles nanoparticles. True/False - Answer-False Centrifugation ...

Liver cells have an especially large network of _______ because the liver removes waste products from the bloodstream smooth endoplasmic reticulum What is biased language excludes or stereotypes people on gender or other physical or mental traits What is formal English? uses full words, avoiding contractions. If one must use an acronym, it should be spelled out first. Uses an objective tone and avoids first- and second-person pronouns Formal language follows conventional rules and is u...

BIOL 1P91 – Final EXAM .OVER 280 QUESTIONS WITH VERIFIED CORRECT ANSWERS Holds the cell together and controls what goes in and out - ANSWER cell membrane separates cell contents from the surrounding environment - ANSWER plasma membrane uptake and export of ions and molecules, cell compartmentalization, protein storing, anchoring cytoskeleton, production of ATP and NADPH, cell signalling, cell and nuclear division, and adhesion of cells to each other and to the extracellular...

IB Bio HL I Semester 1 Exam Review with Certified Solutions Outline the Cell Theory -All organisms are composed of one or more cells -Cells are the smallest unit of life -All cells come from pre-existing cells Discuss the evidence for Cell Theory -Robert Hooke uses microscope to observe living cells -Louis Pasteur performs chicken broth experiment to prove that cells come from pre-existing cells Outline the therapeutic uses of stem cells -Implanted stem cells to rebuild brain tis...

Stanley Miller's 1953 experiments demonstrated conclusively that...Answer - organic molecules can be synthesized abiotically under conditions that may have existed on early Earth. In a single molecule of water, the two hydrogen atoms are bonded to a single oxygen atom by...Answer - polar covalent bonds What do the four 'elements of life' -carbon, hydrogen, and nitrogen-have in common?Answer - They all have unpaired electrons in their valence shells. Water is able to form hydrogen ...

Viruses are CORRECT ANSWER obligate intracellular parachutes what do viruses not have CORRECT ANSWER organelles, cytoplasmic membrane, cytosol, can't carry out metabolic reaction, don't grow n size or respond to environment, cannot reproduce independantly virions CORRECT ANSWER when virus is outside of host -possess a protein coat called capsid -capsid surround and protects nucleic acid(viral genome) viral envelope CORRECT ANSWER -present on some animal viruses -phospholipid bilaye...

Phospholipid Bilayer Phospholipid - correct answer consists of a somewhat circular phosphate group head, and two long , fatty acid chain tails Hydrophilic Head - correct answer Its attracted to water and arranged to be closest to the water molecules Hydrophobic Tail - correct answer Are repelled by water and arranged to be farthest from water molecules Carbohydrate Chain - correct answer substance on the plasma membrane helps identify chemical signals from outside the cell and define c...

BIOL 1107 Final Exam (Answered) Complete Verified Solution 100% The interior region of a phospholipid bilayer is characterized as: Hydrophobic The movement of water across a cell plasma membrane into or out of a cell is an example of: Both osmosis and diffusion. In the example of secondary active transport, what would happen if ATP suddenly became unavailable for Step 1 in Panel a. of the figure shown? The movement of the molecules through the anti-porter would continue for a while until...

Cell Membranes TEST FILE QUESTIONS AND ANSWERS (By Catherine Ueckert) Multiple Choice 1. The compounds in biological membranes that form a barrier to the movement of hydrophilic materials across the membrane are a. integral membrane proteins. b. carbohydrates. c. lipids. d. nucleic acids. e. peripheral membrane proteins. Answer: c Textbook Reference: 6.1 What Is the Structure of a Biological Membrane? Page: 106 Bloom’s Category: 1. Remembering 2. The plasma membrane of an...

Describe the role of a ribosome in the production of a polypeptide. /3 - Correct answer1. mRNA binds to ribosome; 2. Idea of TWO codons/binding sites; 3. tRNA with ANTICODONS binds; 4. (Catalyses) formation of PEPTIDE bond between AMINO ACIDS (held by tRNA molecules); 5. Moves along (mRNA to the next codon); Describe the structure of glycogen. /2 - Correct answer-1. Polysaccharide of α-glucose; OR polymer of α-glucose; 2. (Joined by) glycosidic bonds OR Branched structure; NHE3 ac...