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WorksheetsBiology Fall Semester 2018
Total questions: 59
Worksheet time: 2hrs 58mins
Name
Class
Date
1.
Which is both a primary and secondary consumer?
a)
herbivore
b)
carnivore
c)
omnivore
d)
detritivore
2.
Which best describes biodiversity?
a)
the number of individuals in a population
b)
the amount of biomass in a community
c)
the amount of available energy in a food web
d)
the number of species in an ecosystem
3.
An ecologist surveys weeds to monitor their populations. Which of the following best describes the ecologist's methods?
a)
modeling
b)
observation
c)
experimentation
d)
hypothesizing
4.
Which best describes an ecosystem?
a)
all of the different species living in a given area
b)
all of the members of a single species living in a given area
c)
all of the biotic and abiotic factors in a given area
d)
all of the non-living factors that characterize a given area
5.
Bacteria are important in the nitrogen cycle because they...
a)
help convert nitrogen into a form that organisms can use
b)
respire, returning carbon dioxide into the atmosphere
c)
decay and eventually form fossil fuels
d)
produce sugars that plants can use
6.
Which of the following parts of the figure are biotic factors?
a)
soil, mushroom, tree
b)
soil, sunlight, river
c)
deer, mushroom, tree
d)
sunlight, river, deer
7.
All organisms that inhabit the desert make up a(n)
a)
ecosystem
b)
biome
c)
species
d)
population
8.
Which statement is true for producers in an ecosystem?
a)
consume most of the biomass
b)
fix most of the nitrogen
c)
produce most of the CO2
d)
provide most of the energy
9.
What are two processes by which autotrophs make food?
a)
chemosynthesis and photosynthesis
b)
photosynthesis and respiration
c)
chemosynthesis and decomposition
d)
decomposition and combustion
10.
What word or phrase would be most appropriate to go with commensalism - if one organism benefits the other organism
a)
neither harms or benefits
b)
is harmed
c)
benefits
d)
benefits over time
11.
The white-tailed deer and the kangaroo are both large herbivorous mammals that occupy similar niches but live on different continents. They are an example of
a)
ecological equivalents
b)
competitors
c)
niche partitioning
d)
competitive exclusion
12.
A herd of caribou has more births than deaths and more immigration than emigration. What will most likely happen to the size of the herd?
a)
it will increase
b)
it will decrease
c)
it will increase, then decrease
d)
it will stay the same
13.
In 1988 several large forest fires occurred in Yellowstone National Park. What process occurred after these files?
a)
primary succession
b)
secondary succession
c)
pioneer succession
d)
symbiotic succession
14.
The European red squirrel population is declining due to competition with the North American gray squirrel. Most likely, what will eventually happen to the red squirrel?
a)
it will win its competition with the gray squirrel
b)
it will be an ecological equivalent of the gray squirrel
c)
it will become extinct
d)
it will move to a different community
15.
Lions eat zebras. Zebras are a apart of the lion's
a)
biotic factors
b)
ecological niche
c)
local habitat
d)
abiotic conditions
16.
Parasitism is most similar to
a)
interspecific competiiton
b)
mutualism
c)
commensalism
d)
predation
17.
Fourteen beavers live in a pond with area of 2 square kilometers. What is the population density of the beavers?
a)
7 beavers per square kilometer
b)
14 beavers per square kilometer
c)
16 beavers per square kilometer
d)
28 beavers per square kilometer
18.
The new island of Surtsey was formed near Iceland by a series of volcanic eruptions. Which of these processes occurred first on Surtsey?
a)
a complex ecosystem developed
b)
volcanic rock broke down into soil
c)
plants grew on the island
d)
animals moved onto the island
19.
Many endoparasites lack a complex digestive system. What is the most likely reason for this?
a)
they eat only plants, which are easy to digest
b)
they do not usually kill their hosts
c)
they feed on food already digested by the host
d)
they live only inside their hosts, not outside
20.
Which statement best describes Earth's human carrying capacity?
a)
a fixed number that will soon exceed
b)
increasing due to improved technology and medicine
c)
decreasing due to increasing population
d)
decreasing due to increasing death rates
21.
Why is firewood considered to be a renewable resource?
a)
it can be replenished over time
b)
it is used up faster than it can form
c)
it is made from coal
d)
it can be made synthetically
22.
Which of these practices has contributed to the depletion of the fish populations worldwide?
a)
rotating catches
b)
catching reproduction-age fish
c)
fishing bans
d)
harvest reduction
23.
Increasing the biodiversity of an ecosystem would be likely to
a)
cause some species in the ecosystem to become extinct
b)
reduce the number of species in the ecosystem
c)
increase the ecosystem's stability
d)
make it harder for the ecosystem to thrive
24.
A predator might control an introduced species by
a)
keeping the population from increasing
b)
increasing available niches
c)
causing habitat fragmentation
d)
reducing biodiversity in the area
25.
Tuna from a small fish is generally considered to be safer to eat than tuna from a large fish. Large fish have more pollutants...
a)
because they drink more water
b)
because they live in more polluted water
c)
due to their larger surface area
d)
due to biomagnification
26.
What are the four main groups of carbon-based molecules or biomolecules?
a)
starches, cholesterol, fatty acids, and amino acids
b)
sugars, cellulose, triglycerides, and monosaccharides
c)
polysaccharides, sugars, oils, and polymers
d)
carbohydrates, lipids, proteins, nucleic acids
27.
Chemical reactions change substances into different substances by
a)
reaching chemical equilibrium
b)
breaking and forming bonds
c)
changing the substance's properties
d)
maintaining constant energy
28.
What is the term for the substances that are changed during a chemical reaction?
a)
products
b)
catalysts
c)
enzymes
d)
reactants
29.
The function of a catalyst in a chemical reaction is to increase the
a)
reaction rate
b)
activation energy
c)
pH
d)
number of substances
30.
The lock and key model of enzyme function shown shows which important characteristic of enzymes?
a)
ability to bind with many reactants
b)
ever-changing structure
c)
precise fit with a particular substrate
d)
ability to bond with a product
31.
What aspects of a chemical reaction are enzymes known to affect?
a)
direction and reactant concentration
b)
rate and activation energy
c)
temperature and pH
d)
conditions needed for equilibrium
32.
Cell theory establishes which of the following conclusions about cells?
a)
all cells have the same size and shape
b)
all cells form by free-cell formation
c)
all cells are produced by other living cells
d)
all cells have a cell wall
33.
How is the cell shown different from a prokaryotic cell?
a)
It has a nucleus
b)
It has DNA
c)
It has cytoplasm
d)
It has ribosomes
34.
Which statement is true about a nucleus?
a)
It is the site of enzyme storage
b)
It is the site of energy conversion
c)
It is surrounded by a nucleolus
d)
It is surrounded by a double membrane
35.
What organelle is present both inside the nucleolus and the on the surface of the endoplasmic reticulum?
a)
ribosomes
b)
vacuoles
c)
mitochondria
d)
vesicles
36.
Which phrase best describes the function of the mitochondria?
a)
breakdown chemicals
b)
package proteins
c)
supplies energy to the cell
d)
used for storage
37.
Which organelles are involved in defending a cell against viruses?
a)
centrosomes
b)
lysosomes
c)
vacuoles
d)
chloroplasts
38.
Which features are found in plant cells but not in animal cells?
a)
mitochondria and ribosomes
b)
vesicles and vacuoles
c)
cell walls and chloroplasts
d)
centrioles and centrosomes
39.
Mitochondria and chloroplasts are both sites of
a)
energy conversion
b)
energy manufacturing
c)
photosynthesis
d)
protein synthesis
40.
What phrase best describes the process shown?
a)
osmosis
b)
facilitated diffusion
c)
the formation of a transport protein
d)
the formation of a receptor-ligand complex
41.
Water enters the cell when the solution surrounding the cell is
a)
concentrated
b)
hypertonic
c)
hypotonic
d)
isotonic
42.
Which of the following phrases best describes active transport?
a)
moves substances against concentration gradient
b)
does not use chemical energy
c)
forms a vesicle around a large particle
d)
relies on diffusion of materials
43.
Which phrase best describes the process of facilitated diffusion?
a)
moves molecules against a concentration gradient
b)
requires ATP
c)
moves only nonpolar molecules
d)
requires no energy from the cell
44.
Which organelles are involved in the process called endocytosis?
a)
macrophages and ribosomes
b)
lysosomes and vesicles
c)
phagocytes and centrioles
d)
mitochondria and ribosomes
45.
Which sentence best describes exocytosis?
a)
A vesicle fuses to a lysosome and its contents are destroyed
b)
A vesicle fuses to the cell membrane and its contents enter the cell
c)
A vesicle fuses to the cell membrane and its contents leave the cell.
d)
A vesicle fuses to the nuclear envelope and its contents enter the nucleus.
46.
Which of the following statements is true of ATP?
a)
it stores energy as glucose
b)
it transfers energy to cell processes
c)
it releases energy when it gains a phosphate group
d)
it converts sunlight into chemical energy
47.
The breakdown of which of the following provides the largest number of ATP per molecule?
a)
carbohydrates
b)
lipids
c)
nucleic acids
d)
proteins
48.
Which of the following reactions provides the chemical energy for most cell functions?
a)
ATP - P -> ADP
b)
ATP + P -> ADP
c)
ADP - P -> ATP
d)
ADP + P -> ATP
49.
Which process would bacteria living near a heat vent on the ocean floor use to build carbon-based molecules, such as sugars?
a)
light-independent reactions
b)
cellular respiration
c)
fermentation
d)
chemosynthesis
50.
Which chemical equation best represents the process of photosynthesis?
a)
6CO2 + 6O2 -> C6H12O6 + 6O2
b)
C6H12O6 + 6H2O -> C6H12O6 + 6O2
c)
6CO2 + 6H2O -> C6H12O6 + 6O2
d)
C6H12O6 + 6O2 -> 6CO2 + 6H2O
51.
Which of the following is the site of the photosystems in the light-dependent reactions of photosynthesis?
a)
stroma
b)
thylakoid memebrane
c)
ATP synthase
d)
mitochondrial membrane
52.
What is the name of the process that breaks glucose down into the pyruvate that is used in cellular respiration?
a)
fermentation
b)
electron transport
c)
glycolysis
d)
the Krebs cycle
53.
The aerobic stages of cellular respiration take place in the
a)
cell membrane
b)
mitochondria
c)
cytoplasm
d)
grana
54.
Which process is best represented by the chemical equation C6H12O6 + 6O2 -> 6CO2 + 6H2O?
a)
cellular respiration
b)
photosynthesis
c)
glycolysis
d)
fermentation
55.
An electron transport chain is part of
a)
Krebs Cycle only
b)
cellular respiration
c)
both photosynthesis and cellular resrespiration
d)
both glycolysis and Calvin cycle
56.
Which process allows glycolysis to continue in the absence of oxygen?
a)
chemosynthesis
b)
photosystem I
c)
cellular respiration
d)
fermentation
57.
Which organisms use alcoholic fermentation to allow glycolysis to continue to produce ATP?
a)
yeasts
b)
reptiles
c)
humans
d)
mammals
58.
When pyruvate is a reactant in cellular respiration it means that
a)
oxygen is present
b)
all ATP is made in the cytoplasm.
c)
only fermentation is taking place
d)
glycolysis has stopped
59.
A group of wolves is an example of
a)
an ecosystem
b)
a population
c)
a community
d)
a biome
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