Water is a _________ molecule because it has a positive charge on one end and a negative charge on the other.
A) acid
B) polar
C) base
D) kinetic
What is B) polar
100
Water breaks down into acids and __________.
What is bases?
200
This subatomic particle is located in the nucleus and does not have a charge.
What is a neutron?
200
2 types of nucleic acids are ______ and RNA
What is DNA??
200
Carbohydrates are made of __________, hydrogen and ______________.
What is carbon and oxygen?
200
Polar molecules will disove in ______________.
What is water?
200
_______________ have a pH less than 7.
What is acids?
300
This subatomic particle is located in the nucleus and has a positive charge.
What is a proton?
300
All enzymes end in ________
What is ase?
300
Which reperesents a carbohydrate molecule?
A) C8H12O4
B) C2H4O6
C) C6H12O6
What is C) C6H12O6?
300
_________________ have a pH greater than 7.
What is bases?
400
This subatomic particle travels around the nucleus and has a negative charge.
What is an electron?
400
he rate of action of an enzyme is affected by:
A) pH, particle size and temperature
B) enzyme concentration, pH, and temperature
C) particle size, number of electrons and temperature
What is B) enzyme concentration, pH, and temperature?
400
All sugars end in _________
What is ose?
400
The opposite of a polar molecule is a ____-_________ molecule.
What is non-polar?
400
_______ is neutral on the pH scale. Pure _________ is neutral.
What is 7 and water?
500
The atomic number tells us how many ____________ there are in the nucleus.
What is protons?
500
Long chains of amino acids are found in?
What is proteins?
500
In plants, excess energy is stored as:
A) starch
B) cellulose
C) glycogen
What is A) starch?
500
Oil and water don't mix because oil has ___________ molecules that don't dissolve in water.
What is non-polar?
500
Label the following:
Test Tube A has a pH of 9
Test tube B has a pH of 3
Test tube C has a pH of 7
Most living things prefer a pH range of ____ to ______
What is Test Tube A - Base, Test Tube B - acid, Test Tube C - neutral