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WorksheetsUnit 2 Test Review: Energy
Total questions: 91
Worksheet time: 2hrs 58mins
Name
Class
Date
1.
Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?
a)
Water expands as it freezes.
b)
Water is an excellent solvent.
c)
Water exhibits cohesive behavior.
d)
Water is able to moderate temperature.
2.
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
a)
Water is an acid.
b)
Water is a versatile solvent.
c)
Water has a high heat capacity.
d)
Water acts as a buffer.
3.
Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent?
a)
purity
b)
polarity and cohesion
c)
high heat capacity
d)
expansion upon freezing
4.
Why can water have no net charge but have slight charges in different parts of the molecule?
a)
The oxygen end is slightly negative and the hydrogen end is slightly positive
b)
The hydrogen end is slightly negative and the oxygen end is slightly positive
c)
The hydrogen and oxygen ends change in polarity
d)
Because it is hydrophobic
5.
The attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attraction to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
6.
Water is polar because...
a)
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
b)
The molecule has two poles, at which the it is colder than other regions of the molecule.
c)
The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.
d)
The water molecule is neutral.
7.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
8.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
9.
Which of the following is LEAST likely to dissolve in water?
a)
nonpolar fats and oils
b)
polar sugar molecules
c)
salt made of a positive sodium ion and a negative chloride ion
d)
all of the substances will dissolve easily in water
10.
What is the function of nucleic acids?
a)
Stores energy
b)
Stores genetic information
c)
Movement
d)
Physical structure
11.
What is the monomer of nucleic acids?
a)
Glycerol
b)
Monosaccharides
c)
Amino Acids
d)
Nucleotides
12.
Which macromolecule is shown?
a)
lipid
b)
protein
c)
nucleic acid
d)
carbohydrate
13.
In living cells, enzymes act as catalysts, which may reduce the amount of activation energy required for a chemical reaction to occur. In the graphs below, pathway x is a solid line representing the uncatalyzed reaction. The dotted line shows the catalyzed reaction. Which graph best illustrates the changes in a reaction when the catalyst reduces the amount of energy required?
a)
A
b)
B
c)
C
d)
D
14.
A water strider can skate along the top of a pond because:
a)
covalent bonds result in water cohesion
b)
hydrogen bonds result in water cohesion (surface tension)
c)
water striders have adapted to take advantage of water cohesion
d)
low surface tension of water
15.
What is the function of a carbohydrate?
a)
Stores energy
b)
Movement
c)
Stores genetic information
d)
Speeds up reactions
16.
Enzymes are considered to be
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
17.
What is the purpose of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
18.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
19.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell. Enzymes accomplish this through which of the following means?
a)
reducing the number of products
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants
20.
What is structure A?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
21.
What is structure D?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
22.
What is structure C?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
23.
What is structure E, F, G?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
24.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
25.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
26.
What is the name for the mechanism of enzyme activity?
a)
Lock and key
b)
jigsaw puzzle
c)
hammer and nail
d)
two hands pattern
27.
The reactants of photosynthesis are
a)
sugar and water.
b)
sugar and oxygen.
c)
carbon dioxide and water.
d)
carbon dioxide and oxygen.
28.
Which statement about photosynthesis is correct?
a)
Plants get the energy they need for photosynthesis from water.
b)
Plants get the energy they need for photosynthesis from soil.
c)
Plants get the energy they need for photosynthesis from sunlight.
d)
Plants do not require energy to perform photosynthesis.
29.
What are the products of photosynthesis?
a)
Carbon dioxide and water
b)
Carbon dioxide and oxygen
c)
Glucose and oxygen
d)
Glucose and water
30.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
31.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
32.
What is one of the reactants of cellular respiration?
a)
energy
b)
glucose
c)
carbon dioxide
d)
water
33.
Which of the following structure is where cellular respiration occurs in the cell?
a)
nucleus
b)
cytoplasm
c)
mitochondria
d)
vacuoles
34.
What are the reactants in the equation for cellular respiration?
a)
oxygen and lactic acid
b)
carbon dioxide and water
c)
glucose and oxygen
d)
water and glucose
35.
Cellular Respiration's goal is to
a)
make water
b)
make ATP
c)
make glucose
d)
make oxygen
36.
What is the monomer of a lipid?
a)
monosaccharide
b)
nucleic acid
c)
fatty acid
d)
amino acid
37.
In the phospholipid, the polar head is considered what type of structure?
a)
hydrophobic
b)
insoluble
c)
hydrophilic
38.
What molecule should a bear eat the most before hibernating?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acid
39.
Which macromolecule is this?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
40.
Which conclusion best matches the trends shown on the graph?
a)
Bean plants produce more ATP than corn plants.
b)
Corn plants require more oxygen than bean plants.
c)
Corn plants release more carbon dioxide than bean plants.
d)
Corn plants produce sugars at a faster rate than bean plants.
41.
What molecule absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
42.
18 is referring to a stack of these disc-shaped structures. What is this stack known as?
a)
lumen
b)
thylakoid
c)
granum
d)
stroma
43.
Where do the light-dependent reactions occur?
a)
thylakoid membrane
b)
stroma
c)
lumen
d)
mitochondria
44.
Where do the light-independent reactions occur?
a)
thylakoid
b)
stroma
c)
lumen
d)
mitochondria
45.
What cell structure is letter B?
a)
cell wall
b)
cell membrane
c)
nucleus
d)
cytoplasm
46.
What cell structure is letter C?
a)
mitochondrion
b)
chloroplast
c)
nucleus
d)
cell membrane
47.
A cell boundary that controls what enters and leaves the cell?
a)
cytoplasm
b)
cell wall
c)
cell membrane
d)
mitochondrion
48.
The cell structure that converts the energy in food into usable energy for the cell is the?
a)
mitochondrion
b)
cell wall
c)
chloroplast
d)
nucleus
49.
A cell structure that is a rigid layer that supports the cell and provides shape is the?
a)
cell membrane
b)
cell wall
c)
cytoplasm
d)
nucleus
50.
The cell structure that contains the cell's genetic material (DNA) is the?
a)
cytoplasm
b)
chloroplast
c)
nucleus
d)
cell membrane
51.
The cell structure that converts the sun's energy into food (sugar) is the?
a)
mitochondrion
b)
chloroplast
c)
cell wall
d)
cell membrane
52.
Found in most animal cells
a)
vacuole, cell membrane, mitochondria
b)
Mitochondria, chloroplast, nucleus
c)
cytoplasm, nucleus, mitochondria
d)
cell wall, cell membrane, nucleus
53.
This organelle takes food and turns it into ENERGY for plant and animal cells.
a)
Chloroplast
b)
Mitochondria
c)
Lysosome
d)
Ribosome
54.
What are tiny organelles that convert glucose into ATP?
a)
Ribosomes
b)
Vesicles
c)
Cytoskeleton
d)
Mitochondria
55.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis used carbon dioxide, while cellular respiration produces carbon dioxide.
56.
What is being represented by the letter A in the image?
a)
Substrate
b)
Enzyme
c)
Product
d)
Complex
57.
What molecule is represented by this image?
a)
DNA
b)
mRNA
c)
tRNA
d)
rRNA
58.
This is the "powerhouse" of the cell. Most of an eukaryotic cell's energy is made here.
a)
mitochondria
b)
ribosomes
c)
chloroplasts
d)
nucleus
59.
This term refers to the production of ATP without oxygen being present.
a)
anaerobic
b)
prokaryotic
c)
biogenic
d)
organic
60.
Fermentation occurs in the cell's
a)
cytoplasm
b)
nucleus
c)
cell membrane
d)
cristae
61.
To make large amounts of energy, an eukaryotic cell must use oxygen and
a)
glucose
b)
water
c)
carbon dioxide
d)
light
62.
What Is A Predator?
a)
Neither
b)
A Organism That Is Killed
c)
An Organism That Kills
63.
In a food chain, the first link (where the energy begins) is always:
a)
a primary consumer
b)
a decomposer
c)
a producer
d)
an omnivore
64.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source.
65.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
66.
Which two types of organisms in this aquatic food web have a producer-consumer relationship?
a)
A. Microscopic algae and white suckers
b)
B. Small invertabrates and amphipods
c)
C. Phytoplankton and mummichogs
d)
D. Amphipods and channel catfish
67.
Which of the following organic compounds is the main source of energy for living things?
a)
carbohydrates
b)
lipids
c)
nucleic acids
d)
proteins
68.
Animals store glucose in the form of
a)
cellulose
b)
glycogen
c)
wax
d)
lipids
69.
Enzymes
a)
increase activation energy
b)
are destroyed after use
c)
decrease activation energy
d)
are only found inside of the body
70.
How many amino acids are there?
a)
4
b)
3
c)
30
d)
20
71.
A monosaccharide is a
a)
carbohydrate
b)
lipid
c)
nucleic acid
d)
protein
72.
Organisms that use energy from the sun to make their own food are called
a)
carnivores
b)
consumers
c)
omnivores
d)
producers
73.
Carbon dioxide is returned to the atmosphere primarily by the
a)
eruption of volcanoes.
b)
fallout from solar flares.
c)
process of photosynthesis.
d)
respiration of consumers.
74.
Rain, hail, and sleet, and snow are all examples of
a)
deposition
b)
frozen water
c)
precipitation
d)
tornado warning signs
75.
Humans add greatly to the carbon cycle by
a)
driving cars
b)
planting trees
c)
conserving energy
d)
using solar power
76.
What two processes fuel the carbon cycle?
a)
transpiration and transport
b)
photosynthesis and transport
c)
cellular respiration and transpiration
d)
cellular respiration and photosynthesis
77.
In the food pyramid, the greatest biomass appears at the level of
a)
producers
b)
primary consumers
c)
secondary consumers
d)
tertiary consumers
78.
An eagle is a carniover. It MOST LIKELY gets the energy it needs to reproduce from
a)
oxygen
b)
plants
c)
the sun
d)
rodents
79.
In a food pyramid, about _______ of the available energy is transferred to each level.
a)
10%
b)
25%
c)
50%
d)
90%
80.
During cellular respiration, ducks use _______ gas and release ______ back into the environment.
a)
carbon dioxide, oxygen
b)
oxygen, carbon dioxide
c)
carbon dioxide, hydrogen
d)
carbon dioxide, water vapor
81.
Unlike many other biochemical cycles, the _________ does not play a significant role in the movement of phosphorous.
a)
oceans
b)
atmosphere
c)
groundwater
d)
food chains
82.
The site of photosynthesis in a plant cell is the
a)
ribosome
b)
chloroplast
c)
mitochondria
d)
endoplasmic reticulum
83.
Which organelle is the powerhouse of the cell, the site of cellular respiration?
a)
nucleus
b)
endoplasmic reticulum
c)
Golgi bodies
d)
mitochondria
84.
In the chloroplast, carbon dioxide and water are converted to ____________ and oxygen.
a)
chitin
b)
glucose
c)
lipids
d)
mannose
85.
The by-products of cellular respiration include
a)
energy and oxygen
b)
glucose and oxygen
c)
carbon dioxide and water
d)
glucose and carbon dioxide
86.
Which would have the GREATEST effect on the rate of photosynthesis?
a)
oxygen level
b)
light intensity
c)
sugar concentration
d)
starch concentration
87.
Which of the following is a true statement?
a)
The products of photosynthesis cannot be used by other organisms.
b)
The products of respiration can be used by plants for photosynthesis.
c)
The exchange of oxygen and carbon dioxide occurs only in respiration.
d)
The exchange of oxygen and carbon dioxide occurs only in photosynthesis.
88.
All of following statements about the nitrogen cycle are true EXCEPT for one. That is
a)
fossil fuels break nitrogen molecules so it can combine with oxygen.
b)
putting man-made fertilizers on farm fields exceeds natural nitrogen levels in the soil.
c)
bacteria located in the soil trap excess nitrogen and help to make it available to plant roots.
d)
although nitrogen is the most abundant atmospheric gas, plants cannot use it from the air.
89.
What does an ecological pyramid tell you about the energy flow in an ecosystem?
a)
Energy stays the same. Only the number of living things change.
b)
Energy decreases from the top to the bottom as organisms are larger is size.
c)
Energy increases from the top to the bottom because the organisms get larger in size.
d)
Energy decreases from the bottom to the top because some is used at each level for life processes.
90.
The conversion of ammonia (NH3) to ammonium salts (NH4) is carried out by bacteria and fungi through the process of
a)
decomposition
b)
denitrification
c)
leaching
d)
transpiration
91.
A student set up four test tubes containing starch solution in which to perform starch digestion. Supplies included amylase and an incubator. In which tube listed would starch digestion proceed most quickly?
a)
Tube 1: No amylase, room temperature (25ºC)
b)
Tube 2: No amylase, body temperature (37ºC)
c)
Tube 3: Amylase present, room temperature (25ºC)
d)
Tube 4: Amylase present, body temperature (37ºC)
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