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8th Grade CAST Life Science Review Flashcards | StudBud
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8th Grade CAST Life Science Review
8th Grade CAST Life Science Review
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Life Science Science Review #science #life #CAST #review #life science #NGSS #CAST
Flashcards
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Questions
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Answers
1
What are the 3 main parts of the nervous system?
bones, joints, ligaments
brain, spinal cord, neurons
kidneys, bladder, urethra
brain, heart, liver
2
Examine the graph. What is causing the change in the population of female song sparrows?
competition with other bird species
habitat loss
not enough information
changes in food
3
What is the average yearly temperature and precipitation of a region?
biome
climate
weather
ecosystem
4
What is happening at number 3 in the water cycle shown?
precipitation
condensation
perspiration
evaporation
5
An organelle that performs photosynthesis (energy from the sun to build sugar molecules)
cell membrane
chloroplasts
nucleus
mitochondria
6
Which of the following is an example of an ecosystem service?
pollination of crops by bees
purification of water by wetlands
all of the above
regulation of atmospheric gases by algae
7
True or False: You have one copy of every gene.
False
True
8
What process do cells use to change food and oxygen into carbon dioxide, water, energy?
cellular respiration
eating
photosynthesis
mitosis
9
Which produces more variation (differences) in offspring?
sexual reproduction
none of the above
asexual and sexual reproduction produce the same variation
asexual reproduction
10
Similarities in embryonic development show that...
all of the above
which organisms are closely related
similarities between organisms
organisms share a common ancestor
11
The respiratory system works with the ______________ system to transport oxygen around the body
circulatory
digestive
nervous
excretory
12
DNA mutations can be...
all of the above
or have no effect
harmful
beneficial (helpful)
13
What is a producer in the food web?
black bear
swallowtail caterpillar
persimmon tree
bolete fungus
14
What will happen to the mice population over time? (What would picture 3 show?)
increase in white mice
stay the same
decrease in all mice
increase is gray mice
15
One main difference between plant and animal cells is...
Plant cells have a nucleus
Animal cells have chloroplasts
Plant cells have a cell wall
Animal cells have a cell membrane
16
Examine the graph. What is causing the change in the population of female song sparrows?
changes in food
not enough information
habitat loss
competition with other bird species
17
Where does most energy on Earth come from?
The Earth's core
The Moon
Space
The Sun
18
Which layer of rock contains the oldest fossils?
Layer C
cannot be determined
Layer A
Layer B
19
Which of the following accurately describes the levels of organization of an organism?
tissue->molecule->atom->organism-> cell->organ->organ system
organism->cell->organ system->organ-> atom->tissue->molecule
cell->atom->molecule->tissue->organ->organ system->organism
atom->molecule->cell->tissue->organ->organ system->organism
20
Oxpeckers sit on rhinos and eat parasites that live on rhino's skin. This is an example of...
competition
mutualism
none of the above
predation
21
The smallest unit of life is a...
molecule
organism
electron
cell
