Worksheets7th Grade EOY Review
Total questions: 44
Worksheet time: 1hrs 18mins
Scientists think that temperatures on Earth are increasing. This is called the "Greenhouse Effect". Which gas contributes most to the increasing temperature on Earth?
carbon dioxide
oxygen
nitrogen
helium
The characteristics a person has are inherited from their parents. These characteristics are passed on in units called genes. Which of the following statements about genes is true for humans?
A female child gets more genes from her mother than her father.
older children get more genes from their parents than younger children.
children get half their genes from their mother and half from their father.
The number of genes passed on from each parent varies randomly for each child.
What do the birds in this food web feed on?
snakes
caterpillars and grass
snakes and grasshoppers
grasshoppers and caterpillars
Valerie tied a plastic bag around a bunch of leaves on a tree. The next day there was water inside the bag. She thought that the water came out of the leaves. What would be the best thing to do to help Valerie see if she is correct?
Tie bags around two bunches of leaves on the tree.
Tie a bag around a small branch with the leaves removed.
Don't water the plant for two days then repeat the experiement.
Tie the bags around two bunches of leaves and put them in a dark cupboard.
Scientists classify objects into groups like rocks, plants, animals, and machines. For scientists to place objects into the same group, what must be true?
All the objects must eat the same food.
All the objects must have the same name.
All the objects must live in the same environment.
All the objects must have some features in common.
This is a picture of a sunflower plant. In which part of this sunflower plant does photosynthesis occur?
the roots
the stem
the leaves
the flowers
On a warm day drops of water form on the outside of the glass containing a cold drink. How does this water form on the outside of the glass?
Water from the air condenses on the cold surface.
Water leaks from the inside to the outside of the glass.
Water evaporates from the surface of the drink and falls to the outside.
Water slides up from the drink and moves over the top of the glass onto the outside.
Which of these provide energy to the human?
water
food
sleep
exercise
Which living thing uses sunlight to make its own food?
cat
frog
snake
trees
Hannah drew a picture of the natural water cycle on Earth. What is the source of energy for the water cycle?
rain
clouds
trees
the Sun
Food chains show how living things depend on each other for food. According to this food chain, what does the snake eat?
the frog and insect
the grass and insect
the frog and rabbit
the rabbit and insect
Which of these carry oxygen to different parts of the human body?
kidney
lungs
blood
liver
What is the main purpose of the mitochondria shown by the arrow?
cell reproduction
cellular digestion
energy production
protein manfacture
In which situation would osmosis most likely occur in cells?
across a permeable membrane that seperates of the same concentration.
across a permeable membrane that seperates solutions of different concentrations.
across a nonpermeable membrane that seperate solutions of same concentrations.
across a nonpermeable membrane that seperates solutions of different concentrations.
Which statement best describes the process of respiration?
Oxygen and sugar are used in the process that provides energy to cells; water and carbon dioxide are its waste products.
Water and sugar are used to in the process that provides energy to cells; oxygen and carbon dioxide are its waste products.
Oxygen and carbon dioxide are used in the process that provides energy to cells; sugar and water are its waste products.
Carbon dioxide and sugar are used in the proces that provides energy to cells; water and oxygen are its waste products.
What arrow points to an organ directly involved in the exchange of gases between a human and his or her environment?
arrow A
arrow B
arrow C
arrow D
What is the difference between mitosis and meiosis?
Mitosis occurs in all the cells in animals and plants, while meiosis occurs only in bacteria.
In mitosis, the products are identical to the parent cells, while in meiosis the products are different from the parent cell.
In mitosis, one cell divides into two cells, while in meiosis two cells combine to make one cell.
Mitosis involves seperating the chromosomes, while meiosis involves only the cytoplasm of the cell.
In humans, B is the allele for brown eyes and b is the allele for blue eyes. Two brothers both have brown eyes, but one of them has both the B and b alleles while the other only has B alleles. Which statement is true about the brothers?
They have the same genotype and phenotype.
They have different phenotype and genotype.
They have the same phenotype but different genotypes.
They have the same genotype but different phenetypes.
In horses, the gene for white hair (W) is dominate to the gene for non-white hair (w). A horse with genotype (WW) was crossed with a horse with genotype (ww), as shown in the Punnett Square. What fraction of the offspring should be expected to have white hair?
none
one-half
three-quarters
all
What do scientists mean when they refer to a population?
all the organisms in an ecosystem.
all the species that share similar anatomical features
all the animals that acquire resources through similar methods
all the interbreeding members of a certain species in an ecosystem.
Which relationship is mutualistic?
an insect that lives and feeds on the body of an alligator
an ant that lives on a plant and defends the plants from the other insects.
A bird that migrates to follow the movements of the butterflies that it eats.
a deer that eats one kind of plant, which allows another kind of plant to grow in its place.
Which example describes a behavorial adaptation?
A bird builds its nest in the ash near a volcano.
A whale has the ability to hold its breath for 20 minutes.
A fox's hair is white in the winter and brown in the summer.
A monkey has long arms that allow it to swing from one branch to another.
A forest is flooded when a natural dam breaks, leaving the forest floor under two meters of water. Which animal is most affected by the flooding?
a crow
a rabbit
a squirrel
a butterfy
Which resource is most likely found in a large amount in the forest ecosystem?
iron
wood
plastic
petrolem
In a large forest with many animals, there are only a small number of bears. Which of these most likely limits the population of bears in the forest?
supply of food
type of tree
predation by carnivores
amount of suitable shelter
The graph above shows the population of rabbits in a field over a seven-year period. Based on the data, what is the approximate carrying capacity in the field for rabbits?
200
400
500
600
What is the main reason humans need nitrogen to survive?
Nitrogen is used in respiration to generate energy.
Nitrogen is used in making the proteins in the body.
Nitrogen is used to help the body eliminate wastes.
Nitrogen is used by nerve cells to conduct impulses.
Which statement best describes the role of photosynthesis and respiration in the carbon cycle?
Respiration and photosynthesis both add carbon to the atmosphere.
Respiration and photosynthesis both remove carbon from the atmosphere.
Respiration add carbon to the atmosphere, while photosynthesis removes carbon from the atmosphere.
Photosynthesis adds carbon to the atmosphere, while repiration romoves carbon from the atmosphere.
Scientists have observed an increase in global temperatures over the past 100 years. Which phenomena do scientists believe contributes to the increase in temperatures?
an increase in undersea volcanic activity
a decrease in the distance between Earth and the Sun.
an increase in certain gases released during the use of fossil fuels.
a decrease in the amount of water on Earth due to overconsumption.
Why is it important for the United States to monitor air pollution levels in other countries?
Air pollution can improve the ozone layer aounts in the atmosphere.
Air pollution can travel to the United States and affect people's health.
The United States is the only country able to monitor the air quality.
The United States has clean air and is able to help other countries.
Which organelle is used to transfer energy and can also befound in an animal cell?
1
2
3
4
The cell membrane is unable to work properly. How could this affect plant and animal cells?
It could affect their ability to absorb sunlight.
It could affect their ability to make proteins.
It could affect their ability to store water.
It could affect their ablitiy to remove waste.
Which best summarize organ systems?
a group of organelles working together to perform a certain job.
a group of tissues working together to perform a certain job.
a group of organs working together to perform a certain job.
a group of cells working together to perform a certain job.
Which function summarizes the excretory system?
It removes waste.
It collects oxygen.
It attacks diseases.
It delivers nutrients.
How do the respiration and circulatory systems work together?
The respiratory system takes in carbon dioxide, while the circulatory system delivers carbon dioxide to the cells.
The circulatory systems takes in carbon dioxide, while the respiratory system delivers carbon dioxide to the cells.
The respiratory system takes in oxygen, while the circulatory system delivers oxygen to the cells.
The circulatory system takes in oxygen, while the respiratory system delivers oxygen to the cells.
How does mitosis compare to meiosis?
Mitosis produces two identical daughter cells, while meiosis prodces sex cells with half the genetic information.
Mitosis produces sex cells with half the genetic information, while meiosis produces two identical daughter cells.
Mitosis only occurs in single-celled organisms, while meiosis only occurs in animals.
Mitosis only occurs in animals, while meiosis only occurs in single-celled organims.
How does smoking cigarettes affect the body?
It causes damage to various cells.
It improves the functions of the lungs.
It lowers carbon dioxide amounts.
It reduces the chance of cancer.
Freckles (F) are dominate to not having freckles (f). The diagram show the cross of a homozygous dominate parent (FF) with a parent of an unknown genotype for freckles. What is the unknown genotype and phenotype for the parent?
homozyous dominant with freckles.
homozygous recessive without freckles
heterozygous with freckles.
heterozygous without freckles.
Two black guinea pigs were crossed and they produced a litter of 4 black and 3 white guinea pigs. Which best explains this occurence?
White fur is dominate to black fur.
White fur was the results of a mutation.
Both parents were heterozygous for black fur.
Both parents were homozygous for black fur.
An amoeba divides into two identical daughter cells. They have exactly the same characteristics as the parent amoeba. Which best describes the amoeba's division?
Diffusion
Meiosis
Mitosis
Osmosis
In a food chain, which are the most effiecient users of solar energy?
Herbivores
Carnivores
Omnivores
Parasites
Snakes feed on mice. The mice eat grain crops. When the crops are plentiful, what will happen?
The mouse population will decrease.
The snake population will increase.
The snake population.
The mouse population will not change.
DNA testing is important in what job?
architecture
law enforcement
computer programming
banking
Which structure make a plant cell rigid?
Chromosome
chloroplast
Cell Wall
Cell membrane
