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Biology 171 UH MANOA Exam Practice Questions and Answers (100% Pass)
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Biology 171 UH MANOA Exam Practice Questions and Answers (100% Pass)
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©PREP4EXAMS@2024 [REAL EXAM DUMPS] Friday, July 19, 2024 6:13 AMBiology 171 UH MANOA Exam Practice
Questions and Answers (100% Pass)
What four structures do all cells have? - ✔️✔️cell membrane , ribosomes , genetic material ,
cytoplasm
How does a prokaryotic cell differ from a eukaryotic cell? - ✔️✔️Eukaryotic cells contain
membrane-bound organelles, prokaryotic cells do not
What is the cytoskeleton made of? - ✔️✔️proteins
What is the order of taxonomy? - ✔️✔️Domain, Kingdom, Phylum, Class, Order, Family, Genus,
Species
What are the characteristics of life? - ✔️✔️organization, energy processing, growth and
development, evolutionary adaptation, regulation, reproduction, response to stumulus
What are the three domains? - ✔️✔️Bacteria, Archaea, Eukarya
When does a hypothesis become a theory? - ✔️✔️when there is consistency in experiments and
data
Where do hydrogen bonds form? - ✔️✔️between slightly positive hydrogen atom and slightly
negative atom of a nearby polar covalent molecule
Do hydrogen bonds form between two different types of molecules, or do they have to be the
same type of molecule? - ✔️✔️both
What do ionic bonds form? - ✔️✔️ions
What is an ionic bond? - ✔️✔️A chemical bond that's formed when an atom transfers an electron
to another Atom
What is a covalent bond? - ✔️✔️when two atoms share electrons
What types of covalent bonds are there? - ✔️✔️nonpolar and polar
What is a nonpolar covalent bond? - ✔️✔️electrons are shared equally (ex H2)
What is a polar covalent bond? - ✔️✔️unequal sharing of electrons (ex H2O)
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,©PREP4EXAMS@2024 [REAL EXAM DUMPS] Friday, July 19, 2024 6:13 AM
In a polar covalent bond, which atom will have a negative charge? - ✔️✔️The one that carries the
shared electron more of the time
What are the emergent properties of water? - ✔️✔️cohesive behavior, ability to moderate
temperature, expansion upon freezing (lower density as solid than liquid), versatility as a solvent
Where are emergent properties of water found? - ✔️✔️In a collection of water molecules, not just
an individual water molecule
Why are water molecules cohesive and adhesive? - ✔️✔️because they're polar
What is cohesion? - ✔️✔️Attraction between molecules of the same substance
What is adhesion? - ✔️✔️An attraction between molecules of different substances
What does cohesion cause? - ✔️✔️surface tension
What is the specific heat of water? - ✔️✔️The amount of energy it takes to increase 1 g of a
substance by 1 °C
What has lower density cold water or warm water? - ✔️✔️warm water
Hydrophilic - ✔️✔️water loving, dissolves in water
Hydrophobic - ✔️✔️water fearing, does not dissolve in water
What are acids? - ✔️✔️Hydrogen donors, have low pH
What are bases? - ✔️✔️H+(Proton) Acceptors, produce OH-ion, high pH
Buffer - ✔️✔️compound that prevents sharp, sudden changes in pH by accepting OH and H ions
organic chemistry - ✔️✔️the study of all chemicals containing carbon
Why is carbon so important? - ✔️✔️4 valence electrons means carbon can form lots of bonds, and
a large variety of complex molecules
structural isomers - ✔️✔️Differ in the physical arrangement of the atoms
geometric isomers - ✔️✔️have the same covalent arrangements but differ in spatial arrangements
(cis and trans)
Enatiomers - ✔️✔️Differ in the arrangement of atoms around an asymmetric carbon
The molecules are mirror images of each other (left/right hand)
Where are the same compounds found on a cis version? - ✔️✔️same side
Where are the same compounds found on a trans version? - ✔️✔️opposite sides
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, ©PREP4EXAMS@2024 [REAL EXAM DUMPS] Friday, July 19, 2024 6:13 AM
Which function group behaves as a base? - ✔️✔️amimines
What type of biological macromolecules
are steroids? - ✔️✔️lipids
dehydration synthesis - ✔️✔️Builds a larger polymer, and produces a water molecule
Hydrolysis Reaction - ✔️✔️Breaks a polymer apart, and consumes a water molecule
What are examples of monosaccharides? - ✔️✔️glucose, fructose, galactose
What are examples of disaccharides? - ✔️✔️maltose, sucrose, lactose
What are examples of polysaccharides? - ✔️✔️starch, glycogen, cellulose, fiber
Aldose - ✔️✔️carbonyl group located at the end of the carbon skeleton.
Ketose - ✔️✔️carbonyl group in middle of carbon chain
How are disaccharides formed? - ✔️✔️dehydration synthesis
Where is energy stored in plants? - ✔️✔️starch
Where is energy stored in animals? - ✔️✔️glycogen
Cellulose - ✔️✔️A substance (made of sugars) that is common in the cell walls of many
organisms, structural polyssacharide
Chitin - ✔️✔️structural polysaccharide in arthropods and fungi
What do polymers that contain sugars do? - ✔️✔️they may:
store hereditary info
store energy
protect the cell
Are lipids hydrophobic or hydrophilic? - ✔️✔️hydrophobic
What are examples of lipids? - ✔️✔️fats, oils, waxes, steroids, phospholipids
saturated fats - ✔️✔️solid at room temperature, no double bonds (usually animal fats)
unsaturated fats - ✔️✔️liquid at room temperature, double bonds (usually plant and fish fats)
Phospolipids - ✔️✔️Formed by two molecules of fatty acids, phosphate and glycerol
Is the head or tail of a phospholipid hydrophobic? - ✔️✔️Hydrophilic (polar, waterloving) heads
and hydrophobic (non-polar, water-avoiding) tails orient into a bilayer.
What do phospholipids forms? - ✔️✔️membrane of all living cells and organelles
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