BIO 201 Unit 1 questions and answers Graded
A+
7 properties of life
complex organization, metabolize energy, maintain homeostasis, growth and
development, reproduce, respond to stimuli, and evolve
Life is composed of...
Matter
Properties of Matter
Occupies space, has mass, element are unique forms of matter
smallest unit of matter
Atom
What are the two regions of an atom and what do they hold
nucleus (protons and neutrons) and outer region (electrons)
Most common elements of life
Carboon, Oxygen, Nitrogen, Hydrogen
What is an isotope?
a form of an element with varying number of neutrons
what is important about isotopes
They are radioactive elements that break down over time and release energy into
the environment. Used for imaging and treating cancer and scientific tracking.
three main types of bonds
Covalent, Ionic, Hydrogen
How do Ionic bonds form
Through the transfer of electrons from partially negative ions to partially positive
ions
, How do covalent bonds from
The sharing of electrons between atoms in order to satisfy the octet rule
How to tell if a bond is polar or non-polar based on the shape
symmetrical compounds are non-polar
ranking of main three bond's strength
hydrogen, ionic, covalent
what type of bonds make up water
polar covalent bonds
what bonds are formed between different H2O molecules
Hydrogen bonds
What bonds connect nucleotides in DNA backbone
covalent, phosphodiester bonds
What do buffers do
helps prevent changes in pH
what are the requirements for a hydrogen bond
A hydrogen must be bonded with an O or an N and come into contact with a
different O or N atom
What atom makes up majority of organic compound backbones and why
Carbon because they are capable of forming bonds with four other atoms at a
time
how do you know if an organic molecule is saturated or unsturated
if one of the carbon backbone molecules has a double bond with another atom it
is considered unsaturated
what is given off when something is burning
hydrocarbons (H + O)
A+
7 properties of life
complex organization, metabolize energy, maintain homeostasis, growth and
development, reproduce, respond to stimuli, and evolve
Life is composed of...
Matter
Properties of Matter
Occupies space, has mass, element are unique forms of matter
smallest unit of matter
Atom
What are the two regions of an atom and what do they hold
nucleus (protons and neutrons) and outer region (electrons)
Most common elements of life
Carboon, Oxygen, Nitrogen, Hydrogen
What is an isotope?
a form of an element with varying number of neutrons
what is important about isotopes
They are radioactive elements that break down over time and release energy into
the environment. Used for imaging and treating cancer and scientific tracking.
three main types of bonds
Covalent, Ionic, Hydrogen
How do Ionic bonds form
Through the transfer of electrons from partially negative ions to partially positive
ions
, How do covalent bonds from
The sharing of electrons between atoms in order to satisfy the octet rule
How to tell if a bond is polar or non-polar based on the shape
symmetrical compounds are non-polar
ranking of main three bond's strength
hydrogen, ionic, covalent
what type of bonds make up water
polar covalent bonds
what bonds are formed between different H2O molecules
Hydrogen bonds
What bonds connect nucleotides in DNA backbone
covalent, phosphodiester bonds
What do buffers do
helps prevent changes in pH
what are the requirements for a hydrogen bond
A hydrogen must be bonded with an O or an N and come into contact with a
different O or N atom
What atom makes up majority of organic compound backbones and why
Carbon because they are capable of forming bonds with four other atoms at a
time
how do you know if an organic molecule is saturated or unsturated
if one of the carbon backbone molecules has a double bond with another atom it
is considered unsaturated
what is given off when something is burning
hydrocarbons (H + O)
