Chemistry
Science of the structure and interaction of mater?
a) biology
b) chemistry
c) physiology
d) anatomy
B) Chemistry
Protons have ________ charge?
positive
What are the 2 types of intramolecular interaction?
a- catanion/anion
b- hydrophobic and hydrophilic
c- covalent and ionic bond
d- polar and non-polar
C- covalent and ionic bond
This type of polar bond dissolve but doesn’t disassociate in water?
a- organic compound
b- electrolytes
c- inorganic compound
d- non- electrolytes
d- non electrolytes
What type of bond have the DNA as backbone?
a- H- bond
b- phosphodiester bond
c- deoxyribose sugar
d- adenosine triphosphate
B- phosphodiester bond
The are ______ elements and _____ occur naturally.
A) 118 / 26
B) 92 /26
c) 96/ 26
D) 118/ 92
D) 118/ 92
How you call the ring surround the nucleous?
electron shell or energy shell
type of bond that take place between 2 ions by losing or gaining an electron.
A- Covalent bonds
b- ionic bond
c- polar bond
D- intermolecular
B- ionic bond
What type of molecules have portion that repel water and another portion that dissolve in water?
a- amphipathic molecule
b- hydrophobic
c- hydrophilic
a- amphipathic molecules
What is the cell energy currency
ATP
3 state of matter
liquid, solid and gas
The outer most energy shell is called?
a- octet rule
b- energy shell
c- valance shell
d- noble gases
c- valance shell
What type of bond is H2O?
a- ionic
b- polar
c- non- polar
d- intramolecular
B- polar
Lemon juice have a pH of 2 this mean this substance is a- alkaline
b- neutral
c- base
d- acidic
D- acidic
What are the 4 functional groups complex biomolecules?
carbohydrates, proteins, nucleic acids and lipids
All living things consist of __________
matter
What are Ridioisotopes?
unstable isotopes.
What are isotopes?
What type of bond is equal sharing of electron?
non-polar covalent bond
a decrease of H+ ions in a solution meaning is a proton acceptor this solution is
a- acidic
b- base
d-neutral
b- base
What are the 4 clases of lipids/fats?
PETS
phospholipids
eicosanoids
steroids
What elements made 96% of the human body?
CHON
carbon
hydrogen
oxygen
nitrogen
When the atoms are more stable?
when the have a full valence.
How the stratified the octet rules?
Process by which an atom or molecule gains or loses electron.
Ionization
What molecules prevent drastic changes in the pH of the body fluids.
Buffer system of the body
example
carbonic-bicarbonate buffer system
How exceses of glucose is storage in the body?
is stored in the liver and muscle cells in form of glycogen.
Glycogenesis
glycogenolysis