Biology 101 - General Biology » Spring 2022 » Module 1 Quiz 1
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Question #1
Organisms interact with their environments. For example, molecules in plant leaves convert the energy of sunlight to _______________________.
A.
carbon dioxide and water
B.
chemical energy in glucose molecules
C.
oxygen
D.
kinetic energy
Question #2
All of the living things on Earth along with all of the places where life exists is known as ___________________.
A.
the biosphere
B.
a biological community
C.
an ecosystem
D.
a population
Question #3
An organism with a cell wall, but no nucleus, is most likely a member of domain ________________.
A.
Animalia
B.
Archaea
C.
Protista
D.
Eukarya
Question #4
What was Charles Darwin's most significant original idea?
A.
He observed variation within a species.
B.
He documented change in organisms over time.
C.
He explained the relationship between genes and evolution.
D.
He explained how evolution occurs.
Question #5
Which example is a controlled experiment?
A.
comparing the growth of ten seedlings grown under white light and another ten seedlings grown under red light
B.
comparing the growth of ten seedlings grown under white light at 30°C and another ten seedlings grown under red light at 25°C
C.
using a microscope to observe organisms
D.
making a list of all of the bird species observed at a feeder
Question #6
Which four elements make up approximately 96% of living matter?
A.
carbon, hydrogen, nitrogen, oxygen
B.
oxygen, hydrogen, calcium, nitrogen
C.
carbon, oxygen, phosphorus, hydrogen
D.
carbon, sodium, hydrogen, nitrogen
Question #7
Two atoms that have the same mass number must have the same ___________________.
A.
number of protons + neutrons
B.
number of electrons
C.
atomic number
D.
protons
Question #8
The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is this attraction called?
A.
an ionic bond
B.
a covalent bond
C.
a hydrogen bond
D.
a hydrophilic bond
Question #9
Which is considered a compound?
A.
N2
B.
O2
C.
H2
D.
NaCl
Question #10
A covalent bond is formed by ___________________.
A.
sharing a pair of protons between two atoms
B.
transferring an electron from one atom to another
C.
sharing a single electron between two atoms
D.
sharing a pair of electrons between two atoms
Question #11
A nonpolar covalent bond is one in which ____________________.
A.
one atom transfers an electron to another atom
B.
two atoms share a pair of electrons unequally
C.
two atoms share a pair of protons equally
D.
two atoms share a pair of electrons equally
Question #12
In what state of matter is water most dense and the water molecules closest together?
A.
solid
B.
gas
C.
liquid
Question #13
Will table salt (NaCl) dissolve more in methanol (a nonpolar substance) or pure water?
A.
NaCl dissolves more in pure water
B.
NaCl dissolves more in methanol
Question #14
An insect, such as a water strider, can walk across the surface of a lake due to the ____________________________ of water.
A.
high surface tension
B.
evaporative cooling
C.
adhesion
D.
high specific heat
Question #15
In an aqueous solution, a strong acid like HCl _______________________.
A.
is a strong buffer
B.
dissociates completely
C.
increases the pH
D.
acts as a base
Question #16
Buffers keep pH stable by releasing H+ ions when __________________________ are added.
A.
acids
B.
bases
C.
sodium (Na+) ions
D.
water molecules
Question #17
Organisms interact with their environments. For example, molecules in plant leaves convert the energy of sunlight to _______________________.
A.
kinetic energy
B.
carbon dioxide and water
C.
chemical energy in glucose molecules
D.
oxygen
Question #18
All of the living things on Earth along with all of the places where life exists is known as ___________________.
A.
a biological community
B.
a population
C.
an ecosystem
D.
the biosphere
Question #19
In the Galapagos Islands, finches with bigger beaks get more food, survive longer, and produce more offspring. This is called ____________________.
A.
natural selection
B.
mutualism
C.
the organization of life
D.
an emergent property
Question #20
Which organisms absorb nutrients from the environment as their main way of getting food?
A.
mammals
B.
plants
C.
animals
D.
fungi
Question #21
A control group is important because it __________________.
A.
means that an experiment will be repeatable
B.
is required for the development of an "If . . . then" statement
C.
provides extra experimental subjects
D.
helps the scientist determine whether a treatment has a significant effect on the experimental group
Question #22
Trace elements are required by an organism in very small amounts. Which trace element is required by all living organisms?
A.
nitrogen
B.
calcium
C.
sodium
D.
iron
Question #23
The atomic number of sulfur is 16, which means that sulfur has _____________________.
A.
8 protons and 8 neutrons
B.
16 neutrons
C.
16 protons
D.
16 protons and 16 neutrons
Question #24
The number of bonds formed by an atom is determined by the ______________________.
A.
number of valence electrons
B.
number of neutrons
C.
mass number
D.
total number of electrons
Question #25
Oxygen has an atomic number of 8 and a mass number of 16. What is the atomic mass of an oxygen atom?
A.
approximately 16 grams
B.
approximately 8 amu (daltons)
C.
approximately 16 amu (daltons)
D.
approximately 8 grams
Question #26
The attraction between two different water molecules is called a(n) ________________________.
A.
hydrogen bond
B.
ionic bond
C.
covalent bond
D.
van der Waals interaction
Question #27
electronegative. Which molecule has the most polar covalent bonds?
A.
H2
B.
O2
C.
H2O
D.
CH4
Question #28
If the cytoplasm of a cell is at pH 7 and the mitochondrial matrix is at pH 8, the pH of the cytoplasm is _________________________ times more acidic than the mitochondrial matrix.
A.
10
B.
100
C.
1
D.
2
Question #29
As liquid water cools from 4 degrees Celsius to become ice (solid water) at 0 degrees Celsius, it ___________________________.
A.
contracts
B.
evaporates
C.
expands
D.
becomes more dense
Question #30
Too much atmospheric carbon dioxide damages coral reefs in the ocean. Which factor is NOT a cause of this damage?
A.
increasing the H+ ion concentration
B.
decreasing the H+ ion concentration
C.
increasing the ocean temperature
D.
decreasing the amount of carbonate ions
Question #31
In which state of matter is water least dense and the molecules of water farthest apart?
A.
liquid
B.
gas
C.
solid
Question #32
When CO2 is released into the bloodstream, the blood pH ________________________.
A.
increases slightly
B.
stays the same
C.
decreases slightly
Question #33
For water to evaporate, ___________________ must be broken.
A.
hydrogen bonds
B.
nonpolar covalent bonds
C.
ionic bonds
D.
polar covalent bonds
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