How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Questions and Vocab in Chapter 2 of C-12 Biology Book
energy need to start a chemical reaction
endothermic reaction in organism
chemical reactions that occur inside the cells of living things
exothermic reactions in organisms
chemical reactions that absorbs energy
protein that speeds up biochemical reaction
chemical reactions that releases energy
sum of all the biochemical reactions in an organism
substance that form as the result of a chemical reaction
starting material in chemical reaction
represents a chemical reaction
a process that changes some chemical substances into others
What type of reaction occurs when you digest your food?
reducing the amount of activation energy
How do enzymes work?
CH4 +2O2 →CO2 +2H2O
What is the chemical equation for burning methane?
Activities of enzymes depend on what?
Another name for "biological catalyst"
The joining of amino acids to form a protein is what type of reaction?
A push needed to start a chemical reaction?
During a chemical reaction, the __________ are used up to create the products.
All chemical reactions need ____________ to get started
___________ reactions in organism are called catabolic reactions
Your ______________ includes both exothermic and endothermic reactions.
A chemical reaction involves the breaking and forming of ____________
In a chemical reaction, all matter is ___________
Energy can be released during a chemical reaction in a form of ________ and light.
In a chemical reaction, there is the same amount of each ________ in the products as there was in the reactants.
A ____________ reactions builds up bigger molecules from smaller ones.
make up cells and carry out life processes
List 2 functions of organic compounds
Carbohydrates and Lipids
Which 2 compounds of organic compounds store energy?
DNA have 2 polynucleotide chains, RNA have 1 polynucleotide chain
What is the main difference between RNA and DNA
100s amino acid
How many amino acids does small protein have?
1000s amino acid
How many amino acids does large protein have?
Carbon creates stable bonds with other elements and itself
Why is carbon considered the essential element of life?
Water (H2O) is an
the number of hydrogen atoms bonded to carbon atoms
What is the main difference between saturated and unsaturated fatty acids?
helps cells keep their shape,destroy foreign substances,speeds up biochemical reactions
What are functions of protein?
_______ is how inherited characteristics are passed from one generation to the next.
What organic compound is the major component of cell membrane?
cell wall of plant is made out of
main element of organic compounds is
organic compound that stores energy, forms cell membranes, carries message
organic compound that contain instructions for protein
organic compound that provides energy to cells, stores energy, form body structures
organic compound that helps cell keep their shape
a pure substance, like carbon
may contain just a few simple sugars or thousands
subunit that makes up proteins
subunit used to make nucleic acids
Saturated fatty acid
lipid in which carbon atoms are bonded to as many hydrogen atoms as possible
Unsaturated fatty acid
lipid in which carbon atoms are bonded to groups of atoms other then hydrogen
major component of cell membranes
anything that take up space and has mass
A substance that consist of 2 or more elements
protein which binds foreign substance such as bacteria and targets them for destructions
monosaccharide used for energy by the cells of most organisms
protein that binds with oxygen molecules
shape of DNA
used by plants to store energy
used by plants to form rigid walls around the cell
DNA contains________ instructions for proteins and ______ helps assembles the protein.
Matter is anything that takes up space and ________
Describe the best environment for the enzyme pepsin.
Why is water so important
product from a breakdown of water, with a positive charge, forms another water molecule accepts the hydrogen ion
Photosynthesis-water is a reactant Respiration- water is a product
main difference between photosynthesis and cellar respiration in term of water
Water planet because 75% of surface is water
Earth is sometimes called the....
.... is a strong acid
example of solution
A solution with a lower concentration of hydronium ion is a
sticks together, boiling point, expands when freezes
Hydrogen bonds affect water's properties such as
icecaps and glaciers
Most freshwater is found where
212F or 100C
pH less then 7
pH more then 7
measure of acidity of a solution
same composition throughout
needs an acidic environment to work
an organ that secretes a strong base into the small intestines
difference in electrical charge within the same molecule
holds water molecule together
Water's_____________ gives a unique properties that helps explain why it vital to all living things.
Ice floats on water because ice has a _________ density
____________ is slightly basic with a pH just above 7
in a water molecule, hydrogen atoms have a ______________ charge.
indicates that a chemical reaction has a occurred
cytosine always binds with....
adenine always binds with....
brown paper bag
In a lipid test, the indicator is a...
In a protein test, the indicator is a
In a starch(carbs) test, the indicator is
In a glucose(carbs) test, the indicator is