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WorksheetsBiology 2nd Semester Review
Total questions: 60
Worksheet time: 31mins
TRUE or FALSE...
Scientists use evidence (facts) from multiple independent fields of study to learn how living things evolve.
True.
False. Evolution is just a theory and cannot be proven scientifically.
TRUE or FALSE...
Humans evolved from chimpanzees.
True.
False. Humans and chimpanzees share a relatively recent common ancestor.
According to the Primate Cladogram above, the common ancestor of HUMANS and TARSIERS lived approximately ________ years ago.
30 million
40 million
50 million
60 million
TRUE or FALSE...
These organisms have similar bones that are arranged in a similar pattern because they share a common ancestor.
True.
False. It is impossible for a human to be related to a whale or bat.
Select the BEST definition of biological evolution.
The hypothesis of how chimpanzees changed into humans.
A prediction of how life changes which has not yet been proven.
Genetic change in populations over time.
When an entire species changes into an improved species.
Who was the British naturalist that provided the basis of the scientific theory of evolution by means of natural selection?
Gregor Mendel
Charles Darwin
Carolus Linnaeus
Heinz Dufenschmirtz
TRUE or FALSE...
Mutations that occur within a population's gene pool will either be GOOD or BAD for the population's fitness.
True.
False. Mutations that occur within a population's gene pool can be good, bad, or have no effect (benign) for the population's fitness.
The build-up of traits that are advantageous (good) in a given environment are called ________.
mutations
variations
adaptations
none of these
What is the ultimate source for most of the energy for life on Earth?
Red Bull
DNA
Cells
The sun
What is the energy transfer system used by all cells?
ATP
DNA
Sunlight
H2O
What are the three parts of adenosine triphosphate (ATP)?
base, sugar, and nitrates
sugar, spice, and everything nice
base, sugar, and phosphates
lizards, snails, and puppy-dog tails
Plants, algae, and some bacteria are able to convert the electromagnetic energy from photons in sunlight into chemical energy that can be stored for later use. What is this process called?
Mitosis
Cellular Respiration
Meiosis
Photosynthesis
Which cell organelle is the site of photosynthesis in a plant cell?
Mitochondria
Chloroplast
Nucleus
Endoplasmic Reticulum
What are the inputs/reactants of photosynthesis?
glucose and oxygen
carbon dioxide and glucose
light energy, carbon dioxide, and water
oxygen and water
What are the outputs/products of photosynthesis?
glucose and oxygen
light energy, carbon dioxide, and water
water and oxygen
carbon dioxide and glucose
Which of the following is the overall chemical equation for the photosynthesis reaction?
C6H12O6 + 6O2 --> 6CO2 + 6H2O
6CO2 + 6O2 --> C6H12O6 + 6H2O
6CO2 + 6H2O --> C6H12O6 + 6O2
6H2O + C6H12O6 --> 6CO2 + 6O2
TRUE or FALSE...
Photosynthesis is ONE chemical reaction in which light energy, carbon dioxide and water are converted into glucose and oxygen.
True.
False. Photosynthesis is many chemical reactions broken down into two stages: the light dependent reaction and the light independent reaction.
Why are photosynthetic organisms, like plants, referred to as "producers"?
Because plants produce light energy which is essential for photosynthesis.
Because plants produce carbon dioxide and water that are used by animals that consume them.
Because plants produce wood that humans can use to build houses.
Because plants produce glucose and oxygen which are used by other organisms.
Which of the following is the basic chemical reaction of aerobic cellular respiration?
C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP (energy)
6H20 + 6CO2 + ATP (energy) --> C6H12O6 + 6O2
6CO2 + 6O2 --> C6H12O6 + 6H2O + ATP (energy)
ATP (energy) + C6H12O6 + 6CO2 --> 6H2O + 6O2
TRUE or FALSE...
Aerobic cellular respiration is ONE chemical reaction in which glucose and oxygen are converted into carbon dioxide, water, and ATP.
True.
False. Aerobic cellular respiration is many reactions that are broken down into 3 stages: glycolysis, the Krebs cycle, and the electron transport chain.
In the first stage of cellular respiration, glucose is split into two molecules of pyruvate.
What is this process of splitting glucose called?
Phosphorylation
Glycolysis
Chemiosmosis
Photolysis
The inner mitochondrial membrane contains a special enzyme that uses the kinetic energy of diffusing hydrogen ions (H+) to attach an inorganic phosphate (Pi) to adenosine diphosphate (ADP), thus synthesizing (making) adenosine triphosphate (ATP).
What is the name of the enzyme that makes ATP this way?
DNA helicase
Ligase
RNA polymerase
ATP synthase
In AEROBIC cellular respiration, what is the final electron acceptor that removes electrons from the Electron Transport Chain?
Oxygen (O2)
Carbon dioxide (CO2)
Water (H2O)
Glucose (C6H12O6)
Which of the following is NOT one of the primary processes of the water cycle?
Precipitation
Evaporation
Nitrification
Condensation
Which gas is a greenhouse gas that is part of the carbon cycle, is found in the atmosphere, is used to make glucose in photosynthesis, and is a byproduct of cellular respiration?
Nitrogen Gas (N2)
Ozone (O3)
Methane (CH4)
Carbon Dioxide (CO2)
Which human activity has increased since the Industrial Revolution and has led to an increase in average global temperature and climate change by adding abnormally high amounts of carbon dioxide (CO2) to the atmosphere?
Politicians giving a lot of campaign speeches.
The over-use of fertilizers on farms.
The burning of fossil fuels.
The use of renewable energy such as solar energy, wind energy or hydro-electric dams.
Which element makes up about 78% of Earth's atmosphere?
Phosphorus
Carbon
Oxygen
Nitrogen
TRUE or FALSE...
Organisms are not able to use the nitrogen found in the atmosphere, but they can use nitrogen that has been "fixed" into different forms, like ammonia (NH3) or ammonium (NH4+).
True.
False. Organisms, like plants, are able to use nitrogen from the atmosphere during the process of photosynthesis.
What type of organism is able to perform the process of nitrogen-fixation, or changing nitrogen gas (N2) into ammonia (NH3)?
Bacteria
Plants
Animals
Fungi
What is primary way that phosphorus enters the soil?
Decomposers like fungi are able to produce phosphorus as a by product of cellular respiration.
The weathering of phosphate rock.
Phosphorus is precipitated with rain water from the clouds.
Plants excrete phosphates from their roots and deposit them in the soil.
The over-use of fertilizers on farms can be damaging to ecosystems because the extra fertilizer can get washed into streams and rivers with runoff. Once in the water, the fertilizers cause other organisms, such as algae, to "bloom", which means that the organisms grow rapidly, and then die. The decomposition of the dead organisms then uses up the oxygen in the water, which could lead to the suffocation of other aquatic organisms, like fish.
What nutrients are often put in these fertilizers?
Uranium and Aluminum
Carbon and Oxygen
Nitrogen and Phosphorus
Helium and Argon
What is a group of organisms of the same species that interact within an area?
Biosphere
Ecosystem
Community
Population
What is all of the populations of different species of organisms within an area?
Biosphere
Ecosystem
Community
Population
What is all of the biotic (living organisms) and abiotic (nonliving) parts of an area together?
Biosphere
Ecosystem
Community
Population
What is all of the living organisms on Earth and the places they inhabit?
Biosphere
Ecosystem
Community
Population
Imagine a population of bacteria (a unicellular organism) that reproduces by each cell dividing once per hour, so that the population doubles every hour. Above is a graph of the bacteria population after 10 hours.
What kind of growth is represented by the graph?
Exponential Growth
Logistic Growth
As a population reaches an ecosystem's carrying capacity, the rate of increase for that population levels off and the population tends to stay near carrying capacity for that population. Above is a graph of this situation.
What kind of growth is represented by this graph?
Exponential Growth
Logistic Growth
Above is a graph of the human population over the last 12,000 years.
What kind of growth is being displayed by the graph?
Exponential Growth
Logistic Growth
What is the area in which a population lives?
Habitat
Biodiversity
Niche
Climax Community
What is the variety of species that lives in an area?
Habitat
Biodiversity
Niche
Climax Community
What is the role an organism plays in an area and the unique physical environment it lives in?
Habitat
Biodiversity
Niche
Climax Community
What is a group of interacting populations that reaches a stable state.
Habitat
Biodiversity
Niche
Climax Community
What is a relationship in which two or more individuals or species compete for the same resource?
Competition
Predation
Parasitism
Commensalism
What is a relationship in which one species (a predator) hunts and eats another species (a prey)?
Competition
Parasitism
Mutualism
Predation
What is a relationship in which one species (a parasite) benefits at the expense of another species (a host)?
Commensalism
Predation
Parasitism
Mutualism
A relationship that directly benefits one species but does not affect the other species.
Commensalism
Competition
Predation
Parasitism
What is a relationship that directly benefits both species?
Competition
Mutualism
Predation
Parasitism
What is an organism that is able to convert light energy into chemical energy to produce biomass from inorganic sources?
Producer
Consumer
Decomposer
What is an organism that must consume other living organisms in order to obtain energy?
Producer
Consumer
Decomposer
What is an organism that obtains energy by breaking down dead organic matter?
Producer
Consumer
Decomposer
What are organisms that only eat producers/autotrophs?
Herbivores
Omnivores
Carnivores
Detritivores
What are organisms that eat both producers and consumers?
Herbivores
Omnivores
Carnivores
Detritivores
What are organisms that only eat consumers?
Herbivores
Omnivores
Carnivores
Detritivores
What are organisms that only eat organic waste or dead organic matter?
Herbivores
Omnivores
Carnivores
Detritivores
The death of the last individual organism of an entire species is called ________.
evolution
emigration
speciation
extinction
How do we know that we are currently living in the Earth's 6th mass extinction event?
New species are evolving at a higher rate than normal.
A huge meteor is getting ready to strike the Earth.
Species are going extinct at a much higher rate than normal.
There is no evidence that there is a 6th mass extinction occurring.
TRUE or FALSE...
When humans first started living in North America, about 16,000 years ago, they probably hunted the native mega fauna to extinction (like mastodons, giant ground sloths, and saber-tooth cats).
True.
False. The North American mega fauna probably went extinct due to the asteroid that eliminated the dinosaurs.
TRUE or FALSE...
The current rate of extinction of amphibian species is the same as historical amphibian extinction rates.
True.
False. The current loss of many amphibian species is especially alarming because amphibians have been on Earth for over 350 million years and have survived previous mass extinction events.
Which human activity causes the greatest loss in biodiversity?
Habitat Destruction
Introducing Invasive Species
Pollution
Overhunting
According to the graph above, which phase of human history caused the largest growth in the human population?
Hunting and Gathering Phase (the invention of stone tools)
Agricultural Phase (the invention of agriculture)
Industrial Phase (the Industrial Revolution)
