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Duplicate of 7th Grade Science: 3rd Quarter Review Flashcards | StudBud
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Duplicate of 7th Grade Science: 3rd Quarter Review
Duplicate of 7th Grade Science: 3rd Quarter Review
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Answers
1
Why do organisms reproduce?
Environment changes.
Without it, the species would not survive.
Only occurs in organisms whose cells have a nucleus.
Reproduction needs complex organs.
2
Which statement is correct about the genetic information in the diagram?
C contains DNA from A and B
A splits to create B and C
A is identical to C
B is identical to C
3
What is the difference between an atom and a molecule?
Molecules are smaller than atoms.
Molecules are made from atoms
Atoms are made from molecules.
Molecules are basic particle all elements made from.
4
Why is sugar a compound?
Can NOT be easily separated into original elements.
Elements are NOT combined in specific ratios.
Has same properties as elements that make it up.
Not made of elements.
5
The average adult brain contains nearly 100 billion nerve cells, called
dermis
cerebellum
neurons
stimulus
6
Which is TRUE of sexual and asexual reproduction?
Both create offspring identical to 1 parent.
Both pass on genes (DNA) from parent to offspring.
Both require 2 parents.
All organisms can reproduce sexually or asexually.
7
Which is evidence of a chemical change?
Mixing oil and water.
Stretching rubber band.
Cutting paper into pieces.
CO2 gas is formed when mixing baking soda and vinegar.
8
Which is an example of a chemical change?
boiling water
making lemonade
cookies baking
9
Genetic variations are caused by:
asexual reproduction
genetic mutations
binary fission
changes in the environment
10
Which is a behavioral adaptation used only in winter to conserve energy?
hibernation
camouflage
migration
estivation
11
If 2 species have different adult forms, but may have similar embryonic development. This means
common ancestor
high pressure system
saturation point
barometer
12
A smaller bird, as prey, is following movement of larger bird. What type of stimulus is using?
Mechanical-tasting bread crumbs
Chemical-smelling aggressiveness
Electromagnetic-sight
Memory of leaving nest first time
13
Which illustration shows a model of DNA?
A
D
B
C
14
In the diagram, the proton is
C
B
A
15
Breed below has been bred for small size and friendliness. What biotechnology is this?
asexual reproduction
cloning
genetic engineering
selective breeding (artificial selection)
16
If a plant produces seeds, fruit, and flowers, but NOT cones, it is a
seed plant
angiosperm
gymnosperm
vascular plant
17
These prairie plants have large, underground roots. This provides plants with
resistance to insects
a longer stem to reach sunlight
more surface area for roots to absorb water
more leaves for photosynthesis
18
Nate plays tennis and practices a lot. Which type of memory is Nate using to play tennis?
contradictory memory
conflict memory
declarative memory
procedural memory
19
Energy that an object has when it is in motion is
kinetic
thermal
electric
potential
20
Energy can be
transferred
demolished
destroyed
created
21
Why is trail mix a mixture?
Ingredients mixed together in specific ratios.
Mixed together, but ingredients retain their own properties.
Made of 3 different elements.
Found on periodic table of elements.
22
Which of the following is an example of transfer of kinetic energy?
sitting in a chair
playing pool
a candle burning
drawing a picture
23
Plants capture the sun's energy through
photosynthesis
cellular respiration
reproduction
digestion
24
What part of the brain does coordination occur in?
Frontal Cortex
Parietal Lobe
Cerebellum
Brain Stem
25
If organism has 45 chromosomes in body cells, how many did it get from each parent?
46
23
11.5
Chromosomes all from 1 parent.
26
The map shows
migration
camouflage
hibernation
estivation
27
Most mice in desert are tan, while a few are white. This is most likely because white mice
have larger ears
are more easily seen by predators
reproduce more quickly
moved to the city
28
Which phrase best defines biotechnology?
Process of creating a genetically identical organism.
Use of computers in field of biology.
Use of instruments to study biological processes.
Application of living things and biological processes.
29
What 2 body structures begin to disappear for human?
gills and tail
hands and feet
legs and eyes
mouth and nose
30
Natural selection is
Not influenced by genetic mutations.
Organisms live in social groups.
Inherit beneficial traits & reproduce more successfully
Shopping at health food store.
31
The diagram below represents ______.
meiosis
spores
budding
binary fission
32
Which describes an innate (instinctive) animal behavior?
Pet dog shaking hands on command.
Horse being ridden through obstacle course.
Squirrels in park going to people for food.
Monarch butterfly migrating south.
33
Which is a behavioral adaptation that makes porcupine quills more effective for protection?
Curling up into a ball when threatened.
Using toes to collect food.
Using sharp teeth to cut twigs and leaves.
Using sharp claws to dig an underground nest.
34
What process do we use to replace damaged body cells?
transcription
mitosis
meiosis
replication
35
Jackrabbit and Jerboa adapted to hot climate. Which characteristic is for hot climate?
scaly skin
presence of a tail
small feet
large ears
36
The color of a polar bear's fur is a __ that increases chance of survival.
psychological adaptation
behavioral adaptation
structural adaptation
nocturnal adaptation
37
A structure or behavior that helps an organism survive is a
predator
habitat
adaptation
prey
38
Which is a stimulus?
car horn blowing
jumping at a loud noise
turning on a TV
taste buds on the tongue
39
Which is NOT evidence of a CHEMICAL change?
Solution changes color.
Solid precipitate forms from liquid solution.
Shape changes.
Elements are rearranged to form different substance.
