Font size
WorksheetsBio Midterm
Total questions: 68
Worksheet time: 51mins
The graduating class of a high school would like to give the school a gift that would have a positive impact on the environment. Which plan would be the best choice?
clearing an area to make room for additional student parking
introducing a new population of foxes, the school mascot, to school grounds
making wooden benches by harvesting trees from school property
planting native trees along the border of the school property
Stormwater flow increases with the following factor…
Increase in mowed grass fields
Increase in rain gutters linked and piped away from the building
Decrease in impervious surfaces
Increase in rain gardens
Before a new shopping center can be built on previously undeveloped land, the builders must submit a proposal to the local government for approval. Which statement identifies an environmental concern associated with the development of the shopping center?
Building the center would decrease the amount of pollution in the area.
Building the center would decrease resources needed by local organisms.
The new shopping center would increase competition with already existing businesses.
The new shopping center would increase the biodiversity of the area.
Which row in the chart above correctly pairs a human activity with its impact on the environment?
1
2
3
4
For centuries, humans have used resources from coastal areas and open ocean waters. An example of an activity that would promote the conservation of coastal areas and ocean resources is...
harvesting large numbers of different fish species
allowing all-terrain vehicles access to beach areas
encouraging the construction of factories along the ocean shoreline
creating protected zones of natural grasses and shrubs in beach areas
It is usually desirable to manage soils in ways that maintain a high infiltration rate because this results in ____________________.
more water flowing in rivers, especially during rainy weather
less leaching of chemicals applied to the soil surface
none of the answer choices are correct
more water becoming available to sustain plant productivity
Negative impacts of sediments in our waterways include:
covering gills of aquatic organisms making gas exchange difficult
blocking available light for aquatic plant
covering up fish spawning areas
all of the answers are negative impacts of sediments
According to the climate chart above, which months have the greatest potential for contaminating groundwater or surface water in the watershed with pollutants in the soil?
Jan - Feb
March - April
June - July
Sept - Oct
Two sites, both covered with mowed grass were measured using a clinometer. A clinometer measures the slope or gradient of a surface. The clinometer reading for site A was 30° while the clinometer reading for site B was 10°. You would expect...
Less runoff at site A
More evidence of erosion at site B
Lower rates of water infiltration at site A
Higher rates of water infiltration at site A
All of the answers are correct
Which of the following correctly explains what happens to the level of oxygen dissolved in water when organic waste is put in the water?
The levels would increase because of the availability of nutrients to animals that live in the water
The levels would decrease because of the higher temperatures of the water
The levels would remain the same because organic waste would get used by organisms in the water
The levels would decrease because of the bacteria feeding off the waste and using the oxygen for cellular respiration
Which of the following is a major reason for eutrophication?
contamination by pathogens
soil erosion
presence of heavy metals
runoff of nutrients from land
pH is a measure of how acidic or alkaline a water source is. This is important when identifying the effect of a water source on living things in the habitat because....
a high pH has a higher amount of hydrogen for organisms to use to build cells and cell parts
a low or high pH water source will have more ions (charged particles) that can negatively affect an organism's ability for form cells and cell parts
organisms are adapted to live in a certain pH, generally around 7
a low pH has a higher amount of hydrogen for organisms to use to build cells and cell parts
The process of converting nitrate to nitrogen gas and nitrous oxide is called:
nitrogen fixation
denitrification
transpiration
eutrophication
ammonification
Nitrogen accounts for nearly 79% of the air. Still nitrogen is the most limiting nutrient for plant growth because...
Nitrogen almost an inert gas, N involved reactions require extreme conditions such as high temperature
N˘2 cannot be directly utilized by plants
High energy is required to break a triple bond
all of the above
Denitrification, the process that returns N˘2 to the atmosphere occurs by.....
Haber-Bosch Process
Evaporation
Biological organisms found in soils
Lightning
The major reservoir for phosphorus is/are
ocean
aquifers
soil and rock
atmosphere
Which of the following elements enters terrestrial organisms primarily from the atmosphere rather than from absorption from the soil.
calcium
sulfur
phosphorus
carbon
nitrogen
Rising levels of atmospheric carbon dioxide will cause which of the following changes in oceanic chemistry?
(Check all that apply)
higher pH
increased deposition of calcium carbonate
decreased levels of H+
lower pH
increased level of carbonic acid
In the carbon cycle, the main way that carbon moves from the atmosphere to the geosphere is through...
decomposers breaking down terrestrial and marine organisms and releasing carbon dioxide and methane
terrestrial plants absorbing it for use in photosynthesis and making it into plant cells that never get decomposed
terrestrial animals absorbing it from the soil forming cell parts that are buried when the organism dies
marine organisms taking it from the water to make into calcium carbonate shells which get deposited and buried on the bottom of the ocean
Your are able to transport the atoms and molecules necessary for cell function to your cells because water is a _______________ meaning it can dissolve _________ and _________ molecules.
molecule with high specific heat; ice and water vapor
universal solvent; oil and water
universal solvent; ionic and covalently bonded
cohesive substance; carbon and oxygen
Desert temperature ranges between night and day may vary by as much as 50°C while temperatures ranges between night and day in temperature deciduous forest at the same latitude will only vary by approximately 15°C. This happens because water_______
forms hydrogen bonds
has high specific heat
is cohesive
is polar
all of the answer choices are correct
Disadvantages to animals living in groups (example: deer) include ___________.
increased chance of disease and parasites
increased competition for resources
interference with reproduction
all of the answer choices are correct
none of the answer choices are correct
A benefit of animals living in a group include which of the following?
helping to raise offspring
finding and procuring food
protection against predators
all of the answer choices are correct
none of the answer choices are correct
2018 has seen more acreage than ever destroyed by wildfires. We expect to see changes in the biodiversity of the forest ecosystem but also for the aquatic (river, lake and ocean) ecosystems in the area of the fires. The biodiversity of the aquatic ecosystems is expected to decrease due the .......
density independent limiting effect of increased competition for food on population size
density dependent limiting effect of sediment input from erosion on population growth
density independent limiting effect of sediment input from erosion on population growth
density dependent limiting effect of increased competition for food on population size
Why is biodiversity important to ecosystems?
It allows animals to feed exclusively from one type of plant.
It helps populations adapt to ecological changes.
It reduces the number of insects in a given ecosystem.
It increases at each level of the food chain.
Which of the following would be most effective in slowing the loss of biodiversity?
setting aside small plots of land in a variety of ecosystems, such as forests, grasslands, and marshes
creating large parks/preserves in biodiversity hotspots
requiring every country to maintain a seed bank
freezing fertilized eggs of endangered animals in case the species become extinct in the wild
Two organisms live in close association with one another. One benefits while the other is unaware of the first organism. The relationship is best described as
Commensalism
Competition
Predation
Mutualism
Parasitism
Which letter shows the carrying capacity (K) of a population?
A
B
C
D
E
Which letter shows a population in most unfavorable conditions?
A
B
C
D
E
What causes a logistic growth curve to level off?
the population stops reproducing
the reproduction rate decreases and the mortality rate increases
the population shifts from a clumped to a uniformly spaced dispersion
mortality decreases in the population
the logistic growth curve never levels off
A researcher concludes from a 10-year study that the biodiversity of an ecosystem had increased. Which set of observations represents evidence for this claim?
There were fewer niches for consumers and greater cycling of materials.
There were fewer niches for decomposers and less stability.
There were more niches and greater stability in the ecosystem.
There were more niches and less energy lost as heat in the ecosystem.
Burmese pythons are large snakes that have been introduced into the Florida Everglades ecosystem. Burmese pythons and alligators hunt the same prey. One likely effect of the introduction of the pythons is that...
alligators will have more prey available
pythons will become an endangered species
pythons will become native to the Everglades
alligator populations will decline
none of the answer choices are correct
The concentration of potassium is higher in red blood cells than in the surrounding blood plasma.
This higher concentration is maintained by the process of
diffusion
active transport
circulation
excretion
The diagram above represents two processes that occur in organisms. A characteristic represented by X is common to both of these processes.
A characteristic that the two processes have in common is that each process:
moves molecules
requires enzymes
uses ATP
uses oxygen
Pneumocystis is an organism normally found in the human lungs that can cause pneumonia. It
seldom causes problems in individuals with healthy immune systems. However, people with AIDS sometimes become seriously ill with pneumonia. This is most likely due to the fact that individuals with AIDS have...
inherited a tendency to contract pneumonia
difficulty fighting off infections
hormones that strengthen the infection
an allergy to this organism
Base your answers to the question on the information and diagram above and on your knowledge of biology. The diagram represents a plant leaf cell and two different molecules used in the process of glucose synthesis.
Molecules 1 and 2 enter the cell and glucose leaves the cell through the process of...
active transport
respiration
diffusion
digestion
The diagram above represents a cell and some molecules in its environment. Which molecule would require the use of energy in order to be brought into the cell?
1
2
3
4
The diagram represents an experimental setup.
Which statement best describes what would most likely be observed after 20 minutes?
There would be no change visible.
The dialysis tube would burst.
The liquid in the beaker would turn blue-black.
The contents of the dialysis tube would turn blue-black.
The diagram above and on your knowledge of biology. The diagram represents an experimental setup.
A student filled a dialysis tube with 97% water solution and sealed the ends. The tube and its contents had a mass of 55 grams. The student placed the tube in a solution, and the mass of the tube and its contents increased to 60 grams. Into which solution was the dialysis tube placed?
0% Water
95% Water
97% Water
99% Water
Using a microscope and a wet-mount slide, a student observed a pond water sample containing paramecia, which are single-celled freshwater organisms. She noticed that there was a structure within each living paramecium that contracted regularly—about four times each minute. She researched the organism in his science textbook and found that the structure was a contractile vacuole and its function was to remove excess water from the paramecium. In the diagram above, a paramecium is represented as seen through a microscope. The function of the contractile vacuole is described.
She decided to determine if the concentration of salt in the environment of the paramecium would affect the rate at which the contractile vacuole would contract.
The process used to remove excess water from the paramecium by the contractile vacuole is...
active transport
synthesis
digestion
passive transport
Using a microscope and a wet-mount slide, a student observed a pond water sample containing paramecia, which are single-celled freshwater organisms. She noticed that there was a structure within each living paramecium that contracted regularly—about four times each minute. She researched the organism in his science textbook and found that the structure was a contractile vacuole and its function was to remove excess water from the paramecium. In the diagram above, a paramecium is represented as seen through a microscope. The function of the contractile vacuole is described.
She decided to determine if the concentration of salt in the environment of the paramecium would affect the rate at which the contractile vacuole would contract.
The student predicted that the contractile vacuole would contract fewer times in one minute in a solution that had a higher concentration of salt than that found in typical pond water. This prediction is most likely
incorrect, because the concentration of salt in the environment should not affect a cell
correct, because a high concentration of salt in the environment will cause water to enter the cell, causing the contractile vacuole to pump
correct, because water would be moving out of the cell through aquaporins/channels in the membrane and into the salt solution
incorrect, because salt would be entering the cell, and the contractile vacuole would have to pump it out
A function of cell membranes in humans is the...
synthesis of the amino acids
production of energy
recognition of certain chemicals
replication of genetic material
Which activity can occur without the use of energy?
active transport of minerals
movement of water across a membrane
protein synthesis in a cell
contraction of muscle tissue
The diagram represents two solutions, A and B, separated by a selectively permeable membrane.
Which statement best describes the outcome after 20 minutes?
Solution B will lose all of the glucose molecules to solution A.
Solution B will contain most of the water molecules.
Solution A will contain most of the water molecules.
Solution A will contain approximately the same number of glucose molecules as solution B.
If the concentration of sodium is greater outside a cell than inside the cell, which process could
move sodium out of the cell?
diffusion across the membrane
diffusion through a protein channel
active transport through the phospholipids in the membrane
active transport using a protein pump
Using your knowledge of biology and the diagram above- which represents an amoeba engulfing bacteria-
The activity taking place is:
endocytosis
autotrophic nutrition
photosynthesis
exocytosis
The diagram above represents two cells viewed using the same magnification with the same microscope.
One possible conclusion that can be drawn about the activity of these two cells is that:
more active transport occurs in cell B than in cell A
cell B uses some of the extra mitochondria to make food
cell A is a plant cell since it has a cell wall
more active transport occurs in cell A than in cell B
The diagram above represents a specimen in the low-power field of view of a compound light microscope.
If the slide is not moved, which view best represents the way the specimen will look when the high-power objective lens is switched into place?
The cytoplasm in a single-celled organism and the circulatory system in a human both:
transport substances throughout the organism
distribute blood to all of the parts of the organism
break down molecules into smaller components
The basic structure of a virus contains:
a nucleic acid
a cell wall
a protein coat
both a nucleic acid AND a protein coat
The function of a specific enzyme is most directly influenced by its...
stored energy
molecular size
physical shape
carrying capacity
Which process will result in a gain of energy in an ecosystem?
ATP synthesis in fungi
respiration in maple tree cells
photosynthesis in algae cells
digestion in hummingbirds
In the human body, carbon monoxide reduces the amount of oxygen that can be transported to
cells. Breathing in too much carbon monoxide will most likely result in the production of
more DNA
less glucose
more protein
less ATP
An experiment was carried out to answer the question “Does the pH of water affect the
growth of radish plants?” Two groups of ten radish plants were set up. One group was
watered with water having a pH of 3.0, and the other group was watered with water having
a pH of 7.0. Both groups of plants received the same amount and intensity of light, the same
amount of water, and they were grown in the same type of soil. The heights of the radish
plants were measured every 2 days for a period of 2 weeks.
Which activity might help to increase the validity of this experiment?
placing one set of plants in sunlight and one in darkness
repeating the experiment several times
using two different types of radish seeds in each group
using the same pH for both groups of plants
An experiment was carried out to answer the question “Does the pH of water affect the
growth of radish plants?” Two groups of ten radish plants were set up. One group was
watered with water having a pH of 3.0, and the other group was watered with water having
a pH of 7.0. Both groups of plants received the same amount and intensity of light, the same
amount of water, and they were grown in the same type of soil. The heights of the radish
plants were measured every 2 days for a period of 2 weeks.
What was the dependent variable in this experiment?
temperature of the water
type of soil
heights of the plants
pH of the water
Photosynthesis and respiration are alike in that they both...
result in the production of glucose molecules
occur within mitochondria
require specific catalysts
require the sun as a direct source of energy
Which process uses energy to combine inorganic molecules to synthesize organic molecules?
decomposition
digestion
photosynthesis
respiration
The inability of an organism to produce certain proteins can occur when an organism is lacking an enzyme needed to combine...
simple sugars
biological catalysts
oxygen molecules
amino acids
Which statement is supported by the information in the graph above?
The enzymes function best at the same temperature.
The enzymes in bacteria function best at 40°C.
The enzymes break down the same substances.
The enzymes respond in a similar way to changes in temperature.
Even though human proteins are synthesized from only 20 different amino acids, there are thousands of different proteins found in human cells. This great variety of proteins is possible because the...
size of a specific amino acid can vary within a protein
chemical composition of a specific amino acid can vary
sequence and number of amino acids can be different in each protein
same amino acid can have many different properties
In living cells, chemical processes, such as synthesis, all require the action of...
hormones
salts
biological catalysts
specialized antibiotics
A fully functioning enzyme molecule is arranged in a (tertiary structure) complex three-dimensional shape. This shape determines the...
pH of all body systems
specific type of molecule it interacts with during a reaction
rate at which the enzyme breaks down during a reaction it regulates
temperature of the products of the reaction it regulates
Hydrogen peroxide (H2O2), a byproduct of cellular metabolism, is broken down by the enzyme catalase which is produced by nearly all organisms. When catalase is added to hydrogen peroxide, a reaction occurs that produces bubbles of oxygen gas (O2) and water (H2O).
2H2O2 → 2H2O + O2
The laboratory setup represented below was used to investigate the effect of pH on the breakdown of H2O2. Five setups were made with H2O2 solutions, each at a different pH level. Catalase was added to the solution in the first setup and the reaction proceeded for one minute and the amount of gas produced by the reaction was recorded on the data table. This exact procedure was repeated with the other four setups containing different H2O2 solutions.
Based on the investigation, the student should conclude that enzymes...
function best when observed in living cells
are not affected by changes in environmental factors
are easily broken down by hydrogen peroxide
function best within a specific range of conditions
The equations represent two biochemical processes that occur in living organisms. The letter X represents a molecule produced from process 1.
What molecule is represented by the letter X?
NAD+
ATP
NADH
ADP
Which product of photosynthesis becomes a reactant in the overall cellular respiration chemical equation?
ATP
water
sugar/ glucose
carbon dioxide
A cell in the leaf of a corn plant contains more chloroplasts than a cell in the stem of a corn plant.
Based on this observation, it can be inferred that, when compared to the cell in the stem, the cell in the leaf
produces fewer proteins
synthesizes less sugar
uses more carbon dioxide
has a higher chromosome count
This image above shows the first stage of cellular respiration. What is this reaction called and what is the product labeled "B"?
Glycolysis; glucose
Electron Transport Chain; 3-carbon molecules
ATP synthase; oxygen
Kreb's cycle; carbon dioxide
How confident do you feel about the test?
(Also, this was student made, if you think one of the answers is wrong, it probably is so do tell me)
Absolutely Dreadful
Meh could be worse
Ehhhhhh not horrible
I'll probably get a passing grade
I'm gonna ace it
