Phospholipid bilayer Study guides, Class notes & Summaries

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...

AP Bio FRQs Latest Version 2024/2025 Graded A+ Based on the model, explain whether the molecules shown crossing the membrane require energy to do so. The response indicates that energy is not required for the substances to cross the membrane because the substances are being passively transported from a region of higher concentration to a region of lower concentration. Depending on the organism, the optimal pH for enolase to catalyze its reaction is between 6.5 and 8.0. Describe how ...

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 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...

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 ...

BIOL1P91 Final Exam Prep test Questions With Verified Answers What are the 4 functions of the cell membrane 1. seperating internal and external environment 2. regulating traffic in the cell 3. Holding contents of the cell in place 4. creates interface for cellular activity What is the structure of the cell membrane - phospholipid bilayer - integral and peripheral membrane proteins - carbohydrate bonded to proteins - fluid mosaic model - asymmetrical leaflets fluid mosaic model of...

IB Biology Paper 1 Questions And Answers Already Passed Prokaryote or Eukaryote in paramecium? Compartments in the cell indicates that it's a eukaryote Property of water which makes it suitable for living? Thermal Watson and Crick discovery about DNA DNA is double helix What occurs in meiosis but not in mitosis? Homologous chromosomes pair up Variation within a population Fertilization and mutation properties of stem cells they can differentiate phospholipid bilayer the...