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Duplicate of 7th Grade Life Science Review Flashcards | StudBud
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Duplicate of 7th Grade Life Science Review
Duplicate of 7th Grade Life Science Review
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Review for 7th grade science
Flashcards
72 cards
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Practice quiz
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Host live
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Questions
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Answers
1
An increase in salmon and trout fishing by humans in recent years has most likely resulted in..
Greater plant productivity
Reduced tourism on the Great Lakes
An increase in the life expectancy of ducks
A reduced food supply for eagles
2
An example of an animal produced through the process of selective breeding is the...
Coyote
Wolf
Fox
German Shepherd
3
The Happy-Face Spiders below are all the same species. What term do these spiders show?
Evolution
Variation
Adaptation
Natural Selection
4
An organ system of the body...
is made up of multiple organs working together.
is specialized to perform certain functions.
works with other organ systems to help the body function.
All of the above.
5
Read the statement below and give your best answer.
The three species have the limited supply of food.
The three species live in the same part of the trees.
The three species eat the same food.
The three species occupy different niches.
6
A goat has a gene for white fur, but its fur is black. This is possible because...
The gene for black fur is dominant and "wins" over the white
The gene for white fur is dominant and "wins" over the black
The gene for black fur is recessive and "wins" over white
The gene for white fur is recessive and "wins" over black
7
Which of the following statements is true?
The basic building block of an element is a molecule.
The basic building block of a compound is an atom.
The basic building block of an element is a compound.
The basic building block of an element is an atom.
8
Ecosystems have different levels of organization. A group of similar organisms make up a
habitat
biome
community
population
9
What two systems break down necessary nutrients and transport them to the muscles?
Respiratory and circulatory
Urinary and digestive
Skin and respiratory
Digestive and circulatory
10
Many plant cells, particularly in leaves, are green in color because of the presence of ...
Chloroplasts
Cell walls
Cytoplasm
Mitochondria
11
When you are vaccinated, the vaccine...
kills viruses already inside your body.
kills bacteria already inside your body.
stimulates your body to fight future infections.
stimulates your body cells to produce new viruses.
12
What would happen if the cells of your body could not divide?
The cut would be unable to heal.
Your body would heal the cut with cells from other areas.
The cut would take longer to heal.
The cells around the cut would stretch to cover the injury.
13
In a food chain, what happens to the amount of available energy as it travels through the chain
Decreases
Stays the same
Increase then decrease
Decrease then increase
14
To perform the activities of life, all cells require...
light.
energy.
chlorophyll.
oxygen.
15
Plants combine H2O (liquid) and CO2 (gas) to make sugar (solid) during photosynthesis.
This is an example of a chemical reaction.
This is an example of diffusion.
This is an example of osmosis.
This is an example of a mixture.
16
A muscle cell is specialized to ...
provide protection.
carry gasses, like oxygen & carbon dioxide.
contract and relax.
recieve and transmit signals.
17
A viral infection can be treated with or prevented by...
an antibiotic only
a vaccine only
an antibiotic and/or vaccine
none of the above
18
What is the role of a decomposer in a food web?
It changes solar energy into chemical energy.
It gets energy by eating living matter.
It changes chemical energy into solar energy.
It gets energy by breaking down once living matter.
19
Inherited traits are passed from parents to offspring....
in unpredictable patterns.
through genes located on chromosomes
by cell division.
during spontaneous generation.
20
Dinosaurs used to roam the Earth. What evidence do we have to support this statement?
Scientists found cave paintings of dinosaur-like creatures.
Scientists are unsure of the existence of dinosaurs.
Scientists have found many fossilized remains of dinosaurs.
Scientists observed and recorded their extinction.
21
Which of the following is true about sexual reproduction?
The sex cell from the mother provides 25% of genes.
The sex cell from the mother provides 75% of genes.
A sex cell from one parent forms the new offspring.
A sex cell from each parent combines to form a new offspring
22
How do polar bears' fat cells help them survive hibernation during the long cold winter months?
They provide warmth and energy.
They provide warmth and allow movement.
They provide energy and remove waste.
They provide food and allow movement.
23
One parent organism produces an offspring. This is an example of...
sexual reproduction
asexual reproduction.
both asexual and sexual reproduction.
24
Which of the following statements is true about chemical reactions?
They change the characteristics of the substances.
All of the above.
They can make a new substance.
They combine two or more pure substances.
25
What is the most important cell process for growth and development to occur?
Photosynthesis
Mitosis
Osmosis
Mitochondria
26
Camouflage allows organisms to blend in with their environment. This is an example of...
Overproduction
Adaptation
Natural Selection
Evolution
27
The whale's hind leg bones are shown in the circle. What does this tell us?
A whale's ancestor used to slither snake-like on land.
A whale's ancestor used to fly
A whale's ancestor used to walk on land.
A whale's ancestor used to live in water.
28
A section of chromosome that codes for a trait is called a ...
gene.
nitrogen base.
nucleotide.
centromere.
29
A lichen is an example of a symbiotic relationship. That means that...
The algae benefits and the fungus does not.
The fungus benefits and algae does not.
Both organisms benefit.
Neither organism benefits.
30
Which of the following is true of genes?
Genes are found on chromosomes.
Genes are found in cells.
Genes are sections of DNA.
All of the above.
31
A skin cell is specialized to ...
receive and transmit signals.
provide protection.
carry gasses, like oxygen & carbon dioxide.
contract and relax.
32
A bacterial infection can be treated with or prevented by...
an antibiotic only
a vaccine only
none of the above
an antibiotic and/or a vaccine
33
Bacteria, viruses, parasites, and fungi...
all have the ability to interfere with normal body functions
all live in moist environments
all need to energy to survive
all can be treated with antibiotics
34
The process of converting solar energy (sun) to chemical energy is called...
cellular respiration
fermentation
osmosis
photosynthesis
35
Which of the following statements is true about elements?
They are made of one type of atom.
They are made of cells.
They are made of more than one type of atom.
They are made of molecules of more than one type of atom.
36
Fill in this sentence below with the correct words.
Genes, DNA
Chromosomes, genes
DNA, genes
DNA, chromosomes
37
All compounds are ....
man-made.
made of only one atom.
made of two or more elements.
the basic building blocks of matter.
38
Which of the following choices lists important reasons that cells divide?
Repair, photosynthesis, and growth
Maintenance, growth, and repair
Photosynthesis, repair, and diffusion
Growth, maintenance, and diffusion
39
Sodium is a metal. Chlorine is a gas. When they are chemically combined they form salt.
This is an example of a mixture.
This is an example of a chemical reaction.
This is an example of a physical change.
This is an example of diffusion.
40
Scientists believe that over 99% of all species are no longer living. This points to...
there has been one mass extinction event in all of history.
extinctions only happened in the past.
None of the above.
extinction is a common event.
41
Which of the following do animals, bacteria, plants and protists have in common?
require oxygen.
are multicellular.
reproduce sexually with another organism.
Must get and use energy.
42
When the offspring is genetically identical to the parent offspring that is because of...
sexual reproduction
asexual reproduction.
both asexual and sexual reproduction.
43
Which of the following relationships would represent a fallen tree and a mushroom?
predator/prey
producer/decomposer
parasite/host
producer/consumer
44
A group of similar organisms along with other groups of organisms in a certain area make up a..
ecosystem
species
community
population
45
Interpret the pictures below. What TWO life processes do they all have in common?
Grow and reproduce
Breathe and eat food
Reproduce and breathe
Eat food and grow
46
All molecules are...
the basic unit of an element.
made of two or more atoms.
man-made.
made of only one type of atom.
47
Which of the following relationships would represent a tapeworm and a cow?
predator/prey
producer/decomposer
producer/consumer
parasite/host
48
Points A, B & C show points where there are no further descendants. What do those points show?
Appearance of life forms
Diversification of life forms
Extinction of life forms
Hibernation of life forms
49
Which of the following structures is found in plant cells but not in animal cells?
Cell Wall
Cell membrane
Nucleus
Mitochondria
50
What happens to the amount of matter (water) as it moves through the ecosystems?
increase then decrease
decrease then increase
increases
stays the same
51
Which of the following relationships would represent a wolf and a deer?
parasite/host
predator/prey
producer/consumer
producer/decomposer
52
Which of the following relationships would represent grass and a prairie dog?
parasite/host
producer/consumer
predator/prey
producer/decomposer
53
You have a sore throat and a fever. This was caused by...
being infected by a germ
wet feet and hair
being outside in the cold for too long.
improper nutrition
54
What do scientists need to know about a new element to place it on the periodic table?
The physical properites of the element
Where the element is found on Earth
How easy it is to locate the element
Who discovered the element
55
You are nervous. Your heart beat increases and you start to sweat. Two systems are involved.
The skin and respiratory system
The skin and circulatory system
The circulatory and respiratory system
The circulatory and digestive system
56
Offspring have genetic information from both parents is because of...
asexual reproduction.
sexual reproduction.
both asexual and sexual reproduction.
57
Two parent organisms is ...
sexual reproduction.
asexual reproduction.
both asexual and sexual reproduction.
58
What is the role of a producer in a food web?
It gets energy by breaking down once living matter.
It gets energy by eating living matter.
It changes solar energy (sun) to chemical energy (sugar).
It changes chemical energy (sugar) into solar energy (sun).
59
All of the grey squirrels that live in your neighborhood area are an example of a(n)...
community.
population.
biome.
ecosystem.
60
Approximately what percentage of your genes came from your biological mom?
50%
25%
It depends on whether you are a boy or a girl.
75%
61
A nerve cell is specialized to ...
contract and relax.
receive and transmit signals.
provide protection.
carry gasses like oxygen and carbon dioxide.
62
Your body's NATURAL defense against microscopic organisms and foreign substances is...
Flintstone vitaminsq
antibiotics
the immune system
vaccines
63
What two traits below are acquired?
Chess ability & language
Hair color & chess ability
Eye color & language
Eye color & height
64
Species that do not adapt to their environment are likely to...
destory their environment.
become evolved.
become extinct.
be changed by their environment.
65
Trees, rocks and a ping pong table are all ....
Alive
Made of cells
Filled with DNA
Made of elements
66
What is the role of a consumer in a food web?
It changes solar energy (sun) into chemical energy (sugar).
It gets energy by eating other organisms.
It changes chemical energy (sugar) into solar energy (sun).
It gets energy by breaking down once living matter.
67
The correct order of who would have the most mitosis taking place to who would have the least?
Baby, 12-year-old, 12-year-old with injury, 30-year-old
12-year-old, baby, 12-year-old with injury, 30-year-old
Baby, 12-year-old with injury, 12-year-old, 30-year-old
30-year-old, 12-year-old with injury, 12-year-old, baby
68
Arrange the following levels of organization from simplest to most complex:
Organism, organ system, organ, tissue, cell
Cell, tissue, organ, organ system, organism
Tissue, cell, organ, organ system, organism
Cell, tissue, organ system, organ, organism
69
Sugar (form of energy) made during photosynthesis can be...
all of the above
can be used by other organisms.
stored for later use.
used immediately
70
A person receives their eye color by...
acquiring it over time.
environmental factors.
None of the above.
inheriting it from their parents.
71
How are the reproductive cells in the picture below different from other cells?
They have double the amount of genes.
They have half the amount of genes.
They have no genes.
They have triple the amount of genes.
72
The forelimbs of all these animals are similar. What does this tell us?
All of these animals share a common ancestor.
All of these animals have the same vestigial organs.
All of these animals adapted to the same environment.
All of these animals survived the same mass extinction.
