Phospholipid bilayer Study guides, Revision notes & Summaries

Plasma membrane forms the outer boundary of the cell Cellular organelles each performs specific functions Nucleus contains the cell's genetic material and directs cell activities Cytoplasm the material between the plasma membrane and nucleus Main functions of cells -cell metabolism and energy release -synthesis of molecules -communication -reproduction and inheritance Plasma membrane also called the plasmolemma or cell membraneFunctions of the plasma membrane -encloses and supports the ...

Cell Theory - ANSWER-Discovered in the 17th century 1. All living things are composed of cells 2. The cell is the basic unit of life 3. The chemical reactions of life take place inside the cell 4. Cells arise from only preexisting cells 5. Cells carry genetic information in the form of DNA. This genetic material is passed from parent cell to daughter cell 6 Kingdoms - ANSWER-Bacteria, Archaea, Protista, Fungi, Plantae, and Animalia Prokaryotic - ANSWER-"before nucleus", lacks a memb...

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...

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...

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...

MBB347 FINAL EXAM QUESTIONS WITH ANSWERS Determine if the following features characterize eukaryotes, prokaryotes, both groups, or neither group. 1. They use a deoxyribonucleoside triphosphate as their "energy currency". 2. They chiefly use deoxyribonucleic acid molecules to store genetic information. 3. RNA molecules are their main catalysts. 4. Their DNA is typically found within sub-cellular organelles such as mitochondria, chloroplasts but mainly in the nucleus. 5. Their pr...

Biol 1201 Exam 2 Gregg Latest Update Already Passed Plasma membrane A selectively-permeable phospholipid bilayer forming the boundary of the cells. Hydrophilic heads and hydrophobic tails peripheral proteins Bound to the surface of the membrane Integral proteins penetrate the hydrophobic core Transport proteins Span membrane. Allow passage of hydrophilic substances functions of plasma membrane transport, enzymatic activity, signal transduction, cell-cell recognition, intercel...

NSC final exam questions & answers 2024/2025 how do neurons communicate? who was right? - ANSWERSgolgi- the reticular theory neurons are continuous cajal- neuron doctorine neurons are not continuous CAJAL was right axon hillock - ANSWERSinitial segment of the axon where axon and soma attach pathway of neuron signaling - ANSWERSdendrite->axon hillock->axon->axon terminal soma - ANSWERScell body houses nucleus and organelles dendrites - ANSWERSextensions of soma ...

Water correct answers H2O, molecular weight=18, oxygen is partial negative charge, hydrogen has slight positive charge. What is a dipole moment? correct answers difference in charge on two ends of a molecule Anions correct answers negatively charged ions Cations correct answers positively charged ions covalent bond correct answers A chemical bond formed when two atoms share electrons hydrogen bond correct answers Attraction between a slightly positive hydrogen atom and a slightly ...