Biology 189 Exam 1
what are the subatomic particles?
Electrons ,neutrons, protons
What is the Cell Theory?
1) All organisms are made of cells
2) Cells are the smallest unit of life
3) New cells are formed only by mitosis
What is metabolism?
extraction and conversion of energy
from surroundings; used to maintain
organism and allows it to grow and
reproduce
What is homeostasis?
stable internal state resulting in
favorable operating conditions inside
cell body or organism
What are the characteristics of life?
1) Order
,2) Reproduction
3) Growth and development
4) Energy Utilization
5) Response to environment
6) Homeostasis
7) Evolutionary adaptation
What are the steps of the Scientific Method?
1) Evaluate
2) Hypothesize
3) Test
What is an independent variable?
variable being tested
What is a dependent variable?
result of experiment
What is the atomic mass?
Sum of the number of protons and neutrons
What is the atomic number?
number of electrons
,What are the four elements that
make up almost all living
organisms?
Oxygen, Hydrogen, Nitrogen, and Carbon
Where are the protons?
nucleus
Where are the neutrons?
nucleus
Where are
the electrons?
Cloud outside
nucleus What
are isotopes?
same element with different numbers of neutrons
What two requirements do atoms want to fill?
1) Electrons like to be paired
2) Orbits to be full
What is an ionic
, bond? Complete
transfer of
electrons What is
a covalent bond?
share of electrons
What is a polar
covalent bond?
uneven sharing of
electrons What is
a hydrogen
bond?
Interaction between a negatively
charged atom and Hydrogen in which
that Hydrogen is already part of a
polar covalent bond
How many water molecules does it take to form a H bond?
2
What is the strongest bond?
Covalent
what are the subatomic particles?
Electrons ,neutrons, protons
What is the Cell Theory?
1) All organisms are made of cells
2) Cells are the smallest unit of life
3) New cells are formed only by mitosis
What is metabolism?
extraction and conversion of energy
from surroundings; used to maintain
organism and allows it to grow and
reproduce
What is homeostasis?
stable internal state resulting in
favorable operating conditions inside
cell body or organism
What are the characteristics of life?
1) Order
,2) Reproduction
3) Growth and development
4) Energy Utilization
5) Response to environment
6) Homeostasis
7) Evolutionary adaptation
What are the steps of the Scientific Method?
1) Evaluate
2) Hypothesize
3) Test
What is an independent variable?
variable being tested
What is a dependent variable?
result of experiment
What is the atomic mass?
Sum of the number of protons and neutrons
What is the atomic number?
number of electrons
,What are the four elements that
make up almost all living
organisms?
Oxygen, Hydrogen, Nitrogen, and Carbon
Where are the protons?
nucleus
Where are the neutrons?
nucleus
Where are
the electrons?
Cloud outside
nucleus What
are isotopes?
same element with different numbers of neutrons
What two requirements do atoms want to fill?
1) Electrons like to be paired
2) Orbits to be full
What is an ionic
, bond? Complete
transfer of
electrons What is
a covalent bond?
share of electrons
What is a polar
covalent bond?
uneven sharing of
electrons What is
a hydrogen
bond?
Interaction between a negatively
charged atom and Hydrogen in which
that Hydrogen is already part of a
polar covalent bond
How many water molecules does it take to form a H bond?
2
What is the strongest bond?
Covalent
