Font size
WorksheetsBiology EOC- All
Total questions: 100
Worksheet time: 50mins
Which statement best explains how sweating during exercise maintains homeostasis?
It regulates mineral concentration in cells
It maintains water balance
It maintains sugar balance in cells
It regulates body temperature
A sea turtle has washed up on a remote section of a beach. This is known as "stranding". Stranding occurs when a dead, sick, or injured sea turtle washes up on the shoreline. Which statement best explains why "stranding" should be reported immediately to local authorities?
The information can be useful to protect sea turtles from predators
The information can be useful to biologists who are trying to protect the species
The information can be useful to local fishermen trying to catch the turtles
The information can be useful to tourists that want a sea turtle as a pet
What is the basis for the earliest classification system of organisms?
Physical characteristics
evolutionary relationships
differences in habitats
reproductive patterns
What do both prokaryotic and eukaryotic cells contain?
membrane-bound organelles
linear chromosomes
cytoplasm
a nucleus
Which adaptation do ferns, gymnosperms, and angiosperms have that mosses do not have?
chloroplasts
vascular tissue
stomata
flowers
In the drawing of the Paramecium, which part would be affected if a chemical is added to make the Paramecium stop moving?
Cytoplasm
Nucleus
Cilia
Vacuole
What is the difference between the full classification system of an organism and its scientific name?
The full classification system includes more categories of organisms than the scientific name
The scientific names include the order and family, but the full classification includes only the species name.
The scientific name includes a single nomenclature, but the full classification includes several nomenclatures
The full classification system and their scientific names vary in different countries
At night, moths travel toward light. Which type of behavior does this describe?
Habituation
Imprinting
Innate behavior
Learned behavior
The male birds of a species do a "dance" and "sing a song" each spring. What is the meaning of these behaviors?
To scare off young birds
To imprint young birds
To attract female birds
To imprint young birds
Multicellular eukaryotic autotrophs belong to which Kingdom?
Animalia
Plantae
Fungi
Protista
In nature, which type of behavior causes animals to produce aggressive displays and sounds?
Territoriality
Imprinting
Conditioning
Habituation
Look at the cladogram. The organisms are arranged based on amino acid similarities. Which two organisms are most closely related?
Turtle and Kangaroo
Shark and Tuna
Frog and Salamander
Human and Turtle
What is the best explanation for the continual changes in the classification system of organisms?
All organisms struggle for existence and become extinct
All organisms compete to be at the top of the food chain
Technological advances have allowed scientists to better compare organisms
More species have been discovered, but scientists have not analyzed all the data
Use the dichotomous key to identify Organism C.
Ladybug
Bee
Firefly
Dragonfly
A horse working in a big city must learn to deal with sights, sounds, and smell in the environment around them. This would be an example of?
Habituation
Imprinting
Conditioning
Territoriality
Which kingdom does not have organisms with cell walls?
Protista
Fungi
Plantae
Animalia
What will most likely occur if the population of the world continues to
increase at predicted rates?
There will be an increase in biodiversity as a result of
improvements in technology.
There will be more rapid depletion of natural resources.
The human race will rapidly become extinct.
All human diseases will be eliminated.
What will most likely happen if a nonnative species is introduced into a stable ecosystem?
The native species will change their diet, and the ecosystem will remain stable.
The native species will move to another area, and the ecosystem will remain stable.
The native species will have to compete for resources with the nonnative species, and the ecosystem will become unbalanced.
The native species will share their food with the introduced species, and the ecosystem will become unbalanced.
Which statement best explains why animals are considered heterotrophic?
They are able to produce food through the process of photosynthesis.
They are able to produce food through the process of respiration.
They are able to obtain nutrients by decomposing plant and animal tissue.
They are able to obtain nutrients by consuming other organisms or their products.
In some ecosystems, wolves have been eliminated due to their threats to humans. How can the
reintroduction of wolves benefit the ecosystem?
It can eliminate weak animals from a prey population, thereby decreasing competition for natural resources.
It can eliminate the most fit animals among the prey population, which will cause an increase in birthrates of the prey.
It can cause the prey population to migrate to other areas, resulting in more fit prey.
It can cause the prey population to better blend in with their environment.
What activity most contributes to the depletion of the ozone layer?
burning fossil fuels
release of CFCs
deforestation
overuse of fertilizers
Which graph best shows the growth of a population introduced into an environment with limited resources?
Two different populations of birds live in the same area and eat the same types of food. Which most likely
describes the relationship between these two populations of birds?
competition
mutualism
parasitism
predator-prey
The use of pesticides on crops has been a common farming practice for decades. What has been the
greatest effect of natural selection through the use of pesticides on certain insect populations?
Natural selection has been altered because the insects and their predators are killed.
The rate of selection is increased because the pesticides do not kill the insects that are naturally resistant to it.
The rate of selection has decreased because the pesticides kill only young insects.
The pesticides have altered natural selection by causing the insect DNA to spontaneously mutate.
The yucca plant releases a strong scent at night when the yucca moth is active. The yucca moth, attracted
by the scent, gathers pollen from the yucca flower. The yucca moth then deposits her eggs and the pollen
on another plant. This ensures that the plant will be cross-pollinated and that the yucca moth larvae have a
steady food supply. Which relationship does this best illustrate?
commensalism
mutualism
parasitism
predation
Which environmental concern is most associated with burning fossil fuels?
global climate change
pollution of ocean waters
ozone layer destruction
ozone layer destruction
A field ecologist wants to determine the interactions of various populations of organisms living in a large grassland field. Which method is best for conducting this study?
consulting with local farmers about the diversity of organisms in the field
dividing the field in half, walking over it, counting organisms, and then doubling the numbers
walking over the entire field, collecting the organisms, and then compiling a total
observing the behaviors of different types of organisms several times during the year
If worldwide deforestation is not regulated, what could most likely result?
Acid rain could lower the pH of rivers and lakes to dangerous levels for aquatic life.
CO2 levels in the atmosphere could increase and contribute to global warming problems.
Plants and animals could become better adapted to living in desert conditions.
Future generations of humans could have an excess of wood and paper products.
Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil?
ATP
DNA
iron
oxygen
Scientists believe that the polar bear in Alaska and the brown bear in Russia evolved from a common
ancestor. Which would be responsible for this evolutionary change?
artificial selection
asexual reproduction
sexual competition
geographic isolation
An antibiotic which was effective 20 years ago against a specific type of bacterial infection no longer works
against the same kind of infection today. Which best explains why the antibiotic is no longer as effective as it
was 20 years ago?
Bacteria resistant to the antibiotic have killed off nonresistant bacteria.
Viruses have changed the structure of the bacteria that causes the infection.
Resistant bacteria have survived and reproduced at a greater rate than nonresistant bacteria.
The human body has developed an immunity to the antibiotics.
Some marine worms and mollusks go through similar larval stages during development. Which can be
inferred about their relationship?
They share a common ancestor.
They mate with each other.
They compete for a habitat.
They share the same food source.
Which statement best describes natural selection?
As the weather changes, organisms that are able to find shelter need less energy to live.
Organisms that eat only plants need less food than organisms that eat animals.
Organisms better adapted to their environment are more likely to reproduce and pass on their traits to their offspring.
Small organisms are more likely to survive than larger organisms.
Some scientists claim recent evidence suggests birds should be reclassified to share more taxonomic
groups with dinosaurs. What type of evidence would provide the best support for this claim?
evidence showing birds shared similar habitats with dinosaurs
evidence showing birds shared similar nutritional requirements as dinosaurs
evidence showing birds shared similar behaviors with dinosaurs
evidence showing birds shared a common genetic history with dinosaurs
Which will most likely cause variations to occur within a species?
competition
mutation
mutualism
predation
A large population of cockroaches was sprayed with an insecticide. A few of the cockroaches survived and
produced a population of cockroaches that was resistant to this spray. What can be inferred from this ex?
A species will adapt no matter what the environment.
The environment has no effect on the survival of an organism.
Insecticides cause mutations that are passed on to the next generation.
Individuals with favorable variations survive and reproduce.
This diagram shows a cladogram of six species based on amino acid similarities. Which two species are the most closely related?
I and II
II and IV
I and V
V and VI
In which populations does genetic drift most often occur?
in small populations
in large populations
in marine populations
in terrestrial populations
Plants can make their own food. In which organelle does this take place?
Cell Wall
Chloroplast
Mitochondria
Vacuole
A contractile vacuole helps eliminate wastes in a protist by pumping out wastes. This pumping reduces pressure and keeps the cell from bursting. The energy needed for this "pumping" most likely comes from?
DNA
Lipids
ATP
Ribosomes
What is the primary function of a vacuole?
Enzyme production
Protein synthesis
Storage
Reproduction
Which best explains why muscle cells are different from blood cells.
A mutation happens in muscle cells but not in blood
Different genes are activated in muscles cells and blood cells
Muscle cells experience different environmental conditions than blood cells.
Muscle cells are produced by the brain while blood cells are produced by the heart
A freshwater plant is placed in a container of saltwater. What will most likely happen to the cells of the plant?
They will swell bc water moves in
They will swell because salt moves in
They will shrink bc water moves out
They will shrink bc sald will move out
Which is the best evidence that a cell is using active transport to move a substance across its membrane?
Substances are moving rapidly across the membrane
ATP is being rapidly consumed near the cellular membrane
Substances are moving from high to low
Substances are moving through channels in the membrane
If energy is need to move materials into or out of a cell, what is most likely occuring?
Active transport
Passive transport
Osmosis
Diffusion
A beaker contains a solution with a higher salt content than the red blood cells it contains. What will happen to the red blood cells over time?
The size of the red blood cells will remain constant
Thre red blood cells will swell at first and then shrink.
The red blood cells will swell from absorbing the salt molecules
The red blood cells will shrink from losing water molecules.
A student noticed that the freshwater plant, Elodea, produced bubbles when placed in light. What can you conclude?
Bubbles of carbon dioxide were produced as a result of photosynthesis.
Bubbles of oxygen were produced as a result of photosynthesis.
Bubbles of carbon dioxide were produced as a result of cellular respiration.
Bubbles of oxygen were produced as a result of cellular respiration
Which word equation best represents the process of cellular respiration?
carbon dioxide + glucose → oxygen + water
carbon dioxide + water → glucose + oxygen
glucose + oxygen → carbon dioxide + water
oxygen + water → carbon dioxide + glucose
How does the body of a runner keep up with the demand for energy when cellular oxygen levels are low?
through energy production in the mitochondria
through aerobic respiration in the plasma membrane
through ATP produced directly from sunlight
through anaerobic respiration in the cytoplasm
How does the amount of energy resulting from fermentation compare with that of aerobic respiration?
Aerobic respiration results in less energy.
Aerobic respiration results in more energy.
Each process results in equal amounts of energy.
Each process results in variable amounts of energy.
What will most likely be the result if all the mitochondria are removed from a plant cell?
It will be unable to carry out respiration.
It will lose water through osmosis
It will break down the ribosomes in the cell
It will be unable to photosynthesize
Which statement best compares aerobic and anaerobic respiration?
Less ATP is generated during anaerobic respiration than during aerobic
More water is generated during anaerobic respiration than aerobic
More oxygen is generated during anaerobic than aerobic
Less lactic acid is generated during anaerobic respiration than during aerobic
Why must DNA replication have to occur before a cell can divide by mitosis?
To maintain the same number of chromosomes in the daughter cells as in the parent cell
To cause one of the cells produced to have double the number of chromosomes
To allow crossing over to occur in each of the cells produced
To cause all of the cells produced to have half the number of chromosomes.
How are mitosis and meiosis similar?
Both have two cell division
Both require DNA replication
Both produce gametes
Both involve crossing over
The chemical colchicine disrupts cell division. Which cell process would most likely stop if cohchicine were added to a culture of human liver cells?
Mitosis
Meiosis
Crossing over
Active transport
What would most likely be produced when a cell with eight chromosomes undergoes mitosis?
Two cells with four chromosomes each
Two cells with eight chromosomes each
Four cells with four chromosomes each
Four cells with eight chromosomes each
What is the result when a single cell reproduces by mitosis?
two cells with genetic material identical to the parent cell
two cells with half the genetic material of the parent cell
four cells with half the genetic material of the parent cell
four cells with genetic material identical to the parent cell
During which phase of the cell cycle is the cell growing and preparing for cellular division?
Cytokinesis
Anaphase
Prophase
Interphase
Which process can occur in both mitosis and meiosis?
Fertilization
Independent Assortment
Gene mutation
Crossing over
Which process best explains how a nerve and muscle cell can both develop from the same fertilized egg?
Differentiation
Natural Selection
Selective Breeding
Genetic engineering
Before mitosis begins, which happens before a nucleus starts to divide?
Cytoplasm separates
DNA replicates
Sister chromatids separate
Homologous chromosomes cross over
Why is meiosis important for sexual reproduction?
Zygote formed will have triple the chromosome #
Gametes will have twice the orginal # of chromosomes
Gametes will have half the original # of chromosomes
Zygote will have half the original # of chromosomes
How are sexual and asexual reproduction different?
Sexual reproduction produces offspring identical to parents, but asexual offspring are different
Asexual reproduction produces offspring identical to parents, but sexual offspring are different
Sexual reproduction occurs only in multicellular organisms, but asexual occurs in unicellular
Asexual reproduction occurs in multicellular , but sexual occurs in unicellular
Genetically identical plants will produce either pink flowers or blue depending on the type of soil in which they are planted. What most likely is the reason?
The flower-color gene is codominant
Mutations alter the flower-color gene
The flower-color gene is sex-linked
Environmental factors affect the flower-color gene.
What characteristic is present in offspring produced by sexual reproduction but missing in offspring produced by asexual reproduction?
an identical copy of parent chromosomes
twice the number of parent chromosomes
only half the number of parent chromosomes
an independent assortment of parent chromosomes
Having freckles is dominant over no freckles. If two individuals heterozygous for freckles have a child, what is the probability they will have freckles?
0%
25%
50%
75%
Identical twin girls are separated at birth and cared for by two different families. After 20 years, they have different heights and weights. What most likely is the cause?
One twin had a genetic condition preventing growth
The DNA of one twin was different from the DNA of the other
Each twin was provided a different diet and physical activities
The proteins made by one twin were different from those made by the other
The inheritance of short wings in Drosophila fruit flies is an x-linked, recessive trait. Which would most likely result if a short-winged female mates with a long-wing male?
All offsping will be short-winged
All femailes will be long-winged, all males short-winged
All females will be short-winged, all males long-winged
Half of the males and females will be short-winged, half will be long-winged
During which phase of the cell cycle does most cell growth occur?
Cytokinesis
Interphase
Prophase
Mitosis
Salivary amylase is an enzyme in humans that breaks down starches. What substance would humans have difficulty digesting without this enzyme?
Lipids
Nucleic acids
Proteins
Carbohydrates
Which best explains why the rate of a biochemical reaction decreases at high temperatures?
the activation energy increases
the shape of the enzyme changes
the enzyme-substrate complex forms
the bonds between substrates are broken
Which molecules are joined to make proteins?
fatty acids
nucleic acids
amino acids
acetic acids
Which statement best describes the relationship that exists among proteins, DNA,
Proteins combine to produce cells, which produce DNA
Proteins are made up of DNA, which determines the cells that are produced.
DNA is made up of proteins, which tell a cell how to function
Cells contain DNA, which controls the production of proteins
How does DNA code for proteins in a cell?
by creating a new double helix structure
by using its phosphate and sugar molecules
by adding more hydrogen bonds to its structure
by arranging certain nitrogen bases into a particular order
Which most directly controls the rate at which food is broken down to release energy
enzymes
hormones
nucleic acids
vitamins
What are the subunits of DNA and their function?
nucleotides that store information
monosaccharides that provide quick energy for the cell
lipids that store energy and provide insulation
proteins that provide the building blocks for structural components of organisms
Which type of molecule do whales use for energy storage and insulation or plants use for a waxy waterproof layer?
DNA
glucose
lipids
starch
What is the difference between the DNA of a dog and the DNA of a fly?
the type of sugar building blocks
the sequence of nucleotides
the strength of hydrogen bonds
the strength of covalent bonds
What type of organic molecules are enzymes?
carbohydrates
lipids
nucleic acids
proteins
A section of DNA has these bases: TAG CAG TAC, which mRNA sequence is produced from this DNA
section?
ATC GTC ATG
AUC GUC AUG
AUG CUG AUC
UTC GTC UTG
Which would be a desirable trait scientists may want to create in a transgenic plant?
the ability to resist insects
the ability to grow less fruit
the ability to change color in the winter
the ability to use a lot of water
Which best summarizes the role of DNA in the production of proteins?
DNA moves to the cytoplasm to build proteins.
DNA transports amino acids to the ribosomes to make proteins.
DNA contains the instructions used to make proteins.
DNA breaks hydrogen bonds between amino acids.
Which effect could a mutation in mRNA have on the production of proteins?
The protein produced will have a different identity.
The protein produced will have a coiled shape.
The protein produced will produce excess nitrogen.
The protein produced will produce excess water.
What carries the instructions for making amino acids in a protein?
the nitrogen base on the tRNA
the hydrogen bonding between nitrogen bases
the sequence of nitrogen bases on the mRNA
the nitrogen base bonding on the DNA molecule
Which transgenic organism has been used to clean up oil spills?
bacteria
fungus
jellyfish
paramecia
A strand of DNA has these bases: AGC CAT GTA TAC What is the complementary DNA strand?
ACG GAT CTA TAG
TCG GTA CAT ATG
TGC CTA GAT ATC
UCG CUA CAU AUG
Which technique would most likely be used by forensic scientists?
gene cloning
gene therapy
DNA fingerprinting
karyotyping
Which is one reason scientists produce transgenic organisms?
to create new species of organisms
to control microorganisms in the soil
to prevent habitats from being destroyed
to treat certain types of diseases
A segment of DNA has this sequence: ATA GCA CAT GTA What is the mRNA sequence transcribed from
this segment?
TAT CGT GTA CAT
TAT GCT CTA GAT
UAU CGU GUA CAU
UAU GCU CUA CAU
This chart shows which amino acids are coded for by different combinations of mRNA nucleotides. Which
amino acids are coded for by an mRNA segment that reads CAG GUG?
arginine and valine
isoleucine and arginine
glutamine and valine
valine and isoleucine
This diagram shows DNA fingerprints for a child and four adults. Which adult is most likely a parent of the child?
Adult 1
Adult 2
Adult 3
Adult 4
During translation, what does the tRNA deliver to the ribosomes?
amino acids
DNA
mRNA
proteins
Which will most likely cause an increase in the frequency of genetic mutations in humans?
increased exposure to mold spores in the air
increased exposure to rising levels of atmosphere CO2
increased exposure to bacteria in drinking water
increased exposure to X-rays
What is the function of a restriction enzyme?
to control the movement of proteins into a cell
to regulate blood sugar levels
to produce hormones that regulate digestion
to cut DNA at a specific nucleotide sequence
Which is a step in the process of producing transgenic bacteria?
A plasmid is used to replace a faulty gene in a human cell.
A chain of bacterial amino acids is inserted into human DNA.
A human gene is inserted into a bacterial plasmid.
A mutation is produced in a bacterial cell.
Which would most likely produce a mutation that is passed on to offspring?
radiation changing the DNA sequence in skin cells
a gamete with an extra chromosome forming
tobacco smoke altering the genes in lung cells
exposure to chemicals altering nerve cell function
How does DNA code for proteins in a cell?
by creating a new double helix structure
by using its phosphate and sugar molecules
by adding more hydrogen bonds to its structure
by arranging certain nitrogen bases of the cell in a particular order
How would overexposure to X-rays affect most animal cells?
It would increase cell specialization in organs.
It would change the sequence of DNA nucleotides in affected cells.
It would produce new nucleotides for DNA molecules.
It would cause an increase in red blood cell production.
Two people believe they are related. Which would be the best technique to determine if they are related?
testing blood types
comparing DNA
examining karyotypes
testing for genetic disorders
Which factor most affects the order of amino acids in a protein?
the DNA located in the nucleus of the cell
the cell in which the protein is located
the amount of ATP available for the cell’s use
the area in a cell where proteins are produced
