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Duplicate of Life Science Review
Duplicate of Life Science Review
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Review for 7th grade science
Flashcards
66 cards
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Practice quiz
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Host live
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Questions
66
Answers
1
The whale's hind leg bones are shown in the circle. What does this tell us?
A whale's ancestor used to live in water.
A whale's ancestor used to walk on land.
A whale's ancestor used to fly
A whale's ancestor used to slither snake-like on land.
2
Bacteria reproduce __________________
with 2 parents
asexually through binary fission
Sexually
Meiosis
3
Two parent organisms is ...
both asexual and sexual reproduction.
sexual reproduction.
mitosis
asexual reproduction.
4
What kingdom does the picture belong to?
Fungi
Plants
Bacteria
Protists
5
Offspring have ___________ the genetic information from both parents.
all
both asexual and sexual reproduction.
double
half
6
When you are vaccinated, the vaccine...
stimulates your body cells to produce new viruses.
kills bacteria already inside your body.
stimulates your body to fight future infections.
kills viruses already inside your body.
7
Your body's NATURAL defense against microscopic organisms and foreign substances is...
Flintstone vitamins
antibiotics
vaccines
the immune system
8
Which of the following relationships would represent a tapeworm and a cow?
predator/prey
producer/consumer
parasite/host
producer/decomposer
9
What is the role of a producer in a food web?
It gets energy by breaking down once living matter.
It changes solar energy (sun) to chemical energy (sugar).
It changes chemical energy (sugar) into solar energy (sun).
It gets energy by eating living matter.
10
How do polar bears' fat cells help them survive hibernation during the long cold winter months?
They provide food and allow movement.
They provide warmth and allow movement.
They provide energy and remove waste.
They provide warmth and energy.
11
Which of the following relationships would represent grass and a prairie dog?
predator/prey
producer/consumer
parasite/host
producer/decomposer
12
The Happy-Face Spiders below are all the same species. What term do these spiders show?
Variation
Adaptation
Evolution
Natural Selection
13
Inherited traits are passed from parents to offspring....
through genes located on chromosomes
in unpredictable patterns.
during spontaneous generation.
by cell division.
14
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 survived the same mass extinction.
All of these animals adapted to the same environment.
15
All of the grey squirrels that live in your neighborhood area are an example of a(n)...
population.
community.
ecosystem.
biome.
16
A person receives their eye color by...
None of the above.
inheriting it from their parents.
acquiring it over time.
environmental factors.
17
You have a sore throat and a fever. What body system is being compromised?
Immune
Blood
Integumentary
Circulatory
18
Which of the following relationships would represent a wolf and a deer?
predator/prey
producer/decomposer
parasite/host
producer/consumer
19
Photosynthesis occurs in the ______________.
mitochochondria
cellular respiration
Chlorophyll
Chloroplasts
20
Dinosaurs used to roam the Earth. What evidence do we have to support this statement?
Scientists are unsure of the existence of dinosaurs.
Scientists have found many fossilized remains of dinosaurs.
Scientists observed and recorded their extinction.
Scientists found cave paintings of dinosaur-like creatures.
21
What is the most important cell process for growth and development to occur?
Mitosis
Mitochondria
Osmosis
Photosynthesis
22
Which of the following is true about sexual reproduction?
A sex cell from each parent combines to form a new offspring
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.
23
Which of the following is true of genes?
Genes are found in cells.
Genes are found on chromosomes.
All of the above.
Genes are sections of DNA.
24
One parent organism produces an offspring. This is an example of...
both asexual and sexual reproduction.
asexual reproduction.
None of these
sexual reproduction
25
A nerve cell and the brain are part of the _______________system.
nervous
circulatory
respiratory
endocrine
26
Many plant cells, particularly in leaves, are green in color because of the presence of ...
Chloroplasts
Mitochondria
Cell walls
Cytoplasm
27
Which of the following statements is true?
Cells are the basic building blocks of life
The basic building block of a compound is an atom.
The basic building block of an element is a molecule.
The basic building block of an element is a compound.
28
Temperature, rocks, and the sun are all ....
Alive
Biotic
Abiotic
Filled with DNA
29
An organ system of the body...
works with other organ systems to help the body function.
All of the above.
is made up of multiple organs working together.
is specialized to perform certain functions.
30
What two traits below are acquired?
Chess ability & language
Eye color & height
Hair color & chess ability
Eye color & language
31
An example of an animal produced through the process of selective breeding is the...
German Shepherd
Fox
Wolf
Coyote
32
What is the role of a consumer in a food web?
It changes chemical energy (sugar) into solar energy (sun).
It gets energy by breaking down once living matter.
It changes solar energy (sun) into chemical energy (sugar).
It gets energy by eating other organisms.
33
How are the reproductive cells in the picture below different from other cells?
They have no genes.
They have triple the amount of genes.
They have double the amount of genes.
They have half the amount of genes.
34
Part of the immune system would include...
lungs
the heart
white blood cells
veins
35
The biotic features pictured here are ______________.
Soil
Rock
Air
There are no biotic features in the picture
36
Scientists believe that over 99% of all species are no longer living. This points to...
None of the above.
extinctions only happened in the past.
there has been one mass extinction event in all of history.
extinction is a common event.
37
Camouflage allows organisms to blend in with their environment. This is an example of...
Evolution
Overproduction
Adaptation
Natural Selection
38
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.
Neither organism benefits.
Both organisms benefit.
39
Which of the following relationships would represent a fallen tree and a mushroom?
producer/consumer
parasite/host
producer/decomposer
predator/prey
40
What would happen if the cells of your body could not divide?
The cut would take longer to heal.
The cells around the cut would stretch to cover the injury.
The cut would be unable to heal.
Your body would heal the cut with cells from other areas.
41
Points A, B & C show points where there are no further descendants. What do those points show?
Hibernation of life forms
Appearance of life forms
Diversification of life forms
Extinction of life forms
42
Skin cells are part of the integumentary system which can...
provide protection.
receive and transmit signals.
circulate gasses, like oxygen & carbon dioxide.
aid in movement
43
A section of chromosome that codes for a trait is called a ...
nucleotide.
gene.
centromere.
nitrogen base.
44
Muscle cells make up ______________.
organs
more cells
organ system
tissue
45
Species that do not adapt to their environment are likely to...
become extinct.
be changed by their environment.
become evolved.
destory their environment.
46
Approximately what percentage of your genes came from your biological mom?
25%
50%
It depends on whether you are a boy or a girl.
75%
47
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
A reduced food supply for eagles
An increase in the life expectancy of ducks
48
You are nervous. Your heart beat increases and you start to sweat. Two systems are involved.
The circulatory and digestive system
The skin and respiratory system
The skin and circulatory system
The circulatory and respiratory system
49
What is the role of a decomposer in a food web?
It gets energy by breaking down once living matter.
It changes chemical energy into solar energy.
It gets energy by eating living matter.
It changes solar energy into chemical energy.
50
Which of the following choices lists important reasons that cells divide?
Photosynthesis, repair, and diffusion
Growth, maintenance, and diffusion
Maintenance, growth, and repair
Repair, photosynthesis, and growth
51
To perform the activities of life, all cells require...
oxygen.
energy.
light.
chlorophyll.
52
Plants combine H2O and CO2 to make Glucose (sugar) during ______________.
This is an example of osmosis.
This is an example of diffusion.
Photosynthesis
Cellular Respiration
53
In a food chain, what happens to the amount of available energy as it travels through the chain
Decreases
Increase then decrease
Stays the same
Decrease then increase
54
The muscular system works with the ________________ system to aid movement.
Nervous
Respiratory
Circulatory
Skeletal
55
Arrange the following levels of organization from simplest to most complex:
Tissue, cell, organ, organ system, organism
Cell, tissue, organ, organ system, organism
Cell, tissue, organ system, organ, organism
Organism, organ system, organ, tissue, cell
56
Interpret the pictures below. What TWO life processes do they all have in common?
Breathe and eat food
Grow and reproduce
Reproduce and breathe
Eat food and grow
57
Photosynthesis occurs in the _______________.
Chlorplasts
Vacuole
animal cell
Mitochondria
58
Read the statement below and give your best answer.
The three species live in the same part of the trees.
The three species eat the same food.
The three species have the limited supply of food.
The three species have different diets
59
Which of the following structures is found in plant cells but not in animal cells?
Cell membrane
Nucleus
Mitochondria
Cell Wall
60
Bacteria, viruses, parasites, and fungi...
all live in moist environments
all need to energy to survive
all can be treated with antibiotics
all have the ability to interfere with normal body functions
61
Ecosystems have different levels of organization. A group of similar organisms make up a
biome
population
community
habitat
62
A group of similar organisms along with other groups of organisms in a certain area make up a..
ecosystem
species
population
community
63
A goat has a gene for white fur, but its fur is black. This is possible because...
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
The gene for black fur is dominant and "wins" over the white
64
What happens to the amount of matter (water) as it moves through the ecosystems?
decrease then increase
stays the same
increase then decrease
increases
65
What two systems break down necessary nutrients and transport them to the muscles?
Digestive and circulatory
Respiratory and circulatory
Urinary and digestive
Skin and respiratory
66
When the offspring is genetically identical to the parent offspring that is because of...
asexual reproduction.
sexual reproduction
both asexual and sexual reproduction.
meiosis
