Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5-7
100
A variable that changes in direct response to how another variable is manipulated is
The dependent variable
100
Which is a matter of mixture?
A pure culture of bacteria
100
Difference between inorganic and organic molecules is
Organic molecules contain C-H bonds but the inorganic not
100
The Cell Theory: who first discovered plant cells?
Jakob Schleiden
100
How do enzymes expedite a chemical reaction?
Lower the activation energy of the substrate Form an enzyme-substrate complex via hydrogen bonds Some vitamins help the reaction
200
All the organisms on SBU campus make up
Communities
200
What are the two basic types of energy
Kinetic and potential energy
200
What make carbon unique as the central atom in organic molecules?
Its four electrons in the outer orbit
200
What are the features all cells have?
Membrane Cytoplasm Genetic materials
200
Why an enzyme is specific?
Because of the shape of active sites that fit the substrates
300
What is biology?
A study of naturally living things
300
How are heat and temperature related? Give an example
When heat energy is added to a substance, its molecule movement will accelerate; thus, the temperature will rise.
300
What are isomers?
Organic molecules that have the same number and composition of atoms but with different arrangements.
300
What makes up the phospholipid bilayer
Phospholipid bilayer is made of hydrophobic tails and hydrophilic heads
300
How an enzyme is named?
for the substrate it acts on
400
Explain physical and chemical properties of water
High surface tension High heat of vaporization Hydrogen bonds hold water molecules together An universal solvent
400
Identify carbon in the Periodic Table of Element, 6C12, Which indicates the following except
Atomic weight is 18, because it is the total.
400
How is a polymer synthesized or degraded?
By dehydration synthesis or hydrolysis
400
Why cell membrane appears fluid-mosasic?
Its fluidic phospholipid bilayers are embedded with proteins
400
What is the difference between anabolism and catabolism?
That produce energy from the break down of larger molecules Reactions involved in the synthesis of cell components
500
Covalent bonds form when
C shares electron with H so that there are 8 electrons in the outer orbit.
500
What is molecule?
It is made of two or more atoms joined by a chemical bond
500
What are the differences between saturated and unsaturated lipids?
Unsaturated lipids have double-bonds, C = C, which the saturated do not have
500
What is the function of ribosomes?
Protein synthesis or translation
500
How organisms are classified based on energy they use?
Autotrophs perform photosynthesis and chemosynthesis, but heterotrophs obtain organic molecules by eating autotrophs
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